CN108459064A - A kind of Medical Devices - Google Patents
A kind of Medical Devices Download PDFInfo
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- CN108459064A CN108459064A CN201810267490.XA CN201810267490A CN108459064A CN 108459064 A CN108459064 A CN 108459064A CN 201810267490 A CN201810267490 A CN 201810267490A CN 108459064 A CN108459064 A CN 108459064A
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- lithium vanadium
- vanadium compound
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14546—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring analytes not otherwise provided for, e.g. ions, cytochromes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/307—Disposable laminated or multilayered electrodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/31—Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
Abstract
The present invention provides a kind of portable medical devices comprising heartbeat detection device, compared with existing heart rate detection equipment, service life, stability and safety are significantly improved.
Description
Technical field
The present invention relates to field of medical device, more particularly to a kind of Medical Devices with heartbeat detection device.
Background technology
As the improvement of people's living standards, health is increasingly becoming emphasis of people's attention, and healthy consumption also becomes and disappears
Take one of the mainstream in market.With the increase of income, domestic medical device, especially portable medical device are also by more families
Front yard is received, and the service life of household Medical Devices and safety then become researcher's problem in the urgent need to address.
Invention content
The present invention provides a kind of portable medical devices comprising heartbeat detection device is set with existing heart rate detection
Standby to compare, service life, stability and safety are significantly improved.
Specific scheme is as follows：
A kind of portable medical device comprising heartbeat detection device, the heartbeat detection device include heart rate measurement group
Part and power supply, it is characterised in that：The heart rate measurement component is light sensation heart rate measuring device.
Further, the portable medical device is shaped to Wrist belt-type.
Further, the power supply includes film anode, film cathode and the diaphragm being placed between anode, cathode, institute
It includes plus plate current-collecting body and the positive electrode coated on plus plate current-collecting body surface to state film anode, and the film cathode includes cathode
Collector and negative material coated on negative current collector surface, wherein the positive electrode is doping lithium vanadium compound/graphite
Alkene composite material, the composite material have the grain shape of a word capitate, spherical or almost spherical adjacent elements doped lithium vanadium
Polymer beads are configured to the end particle at the both ends of a word capitate, and the graphene for being coated on doping lithium vanadium compound particle surface is formed
Thin graphene conductive network, the graphene between above-mentioned adjacent doping lithium vanadium compound particle are configured to connect above-mentioned
The handle linkage section of the word hammer of lithium vanadium compound end particle is adulterated, the cross-sectional maximum dimension of the handle linkage section is less than both ends
The grain size of lithium vanadium compound end particle is adulterated, the grain size of the doping lithium vanadium compound particle is 300-800nm, the thin layer
Thickness is 15-30nm, and the cross-sectional maximum dimension of the handle linkage section is 150-500nm.
Further, the negative material includes negative electrode active material, binder, which is graphene.
Further, the doping lithium vanadium compound is formed with following general formula (1)：
LiV1-x-yMxNyPO4-zA2z (1)
Wherein, M is selected from least one of the group that is formed of Ti, Cr, Mn, Ni, Al, Mg, Cu, Zn element, N be selected from Pb, Si,
At least element in the group that As, Sn, La, Ce, Nd are formed, A are selected from least one of halogen, S elements, and 0<x<0.358,0<y<
0.336,0<z<0.199.
Further, the preparation method of above-mentioned doping lithium vanadium compound is provided comprising following steps：It is counted according to chemistry
Amount ball milling 2-8 hours under solvent medium, is put in an oven later than weighing raw material lithium source, the sources V, the sources M, the sources N, phosphorus source mixing
In 50-80 DEG C of predrying 1-3 hours, sol-gel precursor is obtained, is spray-dried later, precursor powder is obtained；It will
Presoma is in the inert gas of certain mixed volume ratio and the mixed atmosphere of A source gases, with 1-10 DEG C/min rate of heat addition liters
Temperature is heat-treated 6-30 hours in 600-800 DEG C of constant temperature, cools to room temperature with the furnace, and LiV is made1-x-yMxNyPO4-zA2zProduct.
Further, the M is selected from Mn.
Further, the N is selected from Sn.
Further, phosphorus source is phosphoric acid.
Further, the heat treatment temperature is 600 DEG C, and heat treatment time is 28 hours.
Further, the preparation method of above-mentioned film anode is provided comprising following steps：
A doping lithium vanadium compound particle) is prepared, which has spherical or almost spherical granulated
Shape；
B the concentrated sulfuric acid) is added in the reaction vessel, the artificial squama of the quality of the 20%-80% of concentrated sulfuric acid quality is added later
Piece graphite is slowly dropped into hydrogen peroxide, the addition of hydrogen peroxide in mass after being stirred evenly under subfreezing temperature condition
Be 0.2-0.6 times of concentrated sulfuric acid quality, continue stirring 1-8 hour, later using heating water bath, temperature rise to 50-80 DEG C it is subsequent
Continuous stirring 1 hour, is slowly added dropwise deionized water and is diluted, and 1.5-3 times before the volume of mixed liquor becomes undiluted, fills
Divide stirring, 0.05-0.35 times of potassium permanganate of concentrated sulfuric acid quality is added later, stirs, filters, dries, obtain
It is uniform to be added to ultrasonic disperse in acetone, obtains graphene oxide point by graphene oxide powder for above-mentioned graphene oxide powder
Dispersion liquid；
C) by step A) obtained doping lithium vanadium compound particle is added to step B) obtained graphene oxide dispersion
In, it stirs, obtains mixed slurry, wherein adulterate the quality of lithium vanadium compound and graphene oxide in mixed slurry
Than for 65-95:5-35, filtering, drying, is dried with 50-80 DEG C of temperature in drying box, obtains elements doped lithium vanadium chemical combination
The hydrofluoric acid aqueous solution that mass concentration is 8-32% is added in above-mentioned presoma by object/graphene oxide composite material presoma, into
The primary etching of row, the time is 2-8 hours, and gained etch product is cleaned, and removes the hydrofluoric acid of surface, filters, is dry
It is dry, the composite material precursor product after once being etched；
D) by step C) obtained by precursor product be added in ethyl alcohol and carry out ultrasonic disperse processing, the time of supersound process is
2-8 hours, supersonic frequency 30KHz-80KHz, filtering, drying obtained powdered presoma；
E) by step D) 2-5 times of N- crassitudes of the precursor powder quality are added in obtained powdered presoma
In ketone, stirring is allowed to uniformly mixed, obtains anode sizing agent；
F) by step E) obtained anode sizing agent is coated in as on the aluminium foil of plus plate current-collecting body, with 50-80 DEG C of temperature
Drying 2-8 hours is heat-treated 6-18 hours with 180-560 DEG C of temperature in vacuum condition, graphite oxide is reduced to have later
There is the graphene of cross linked porous structure, the graphene coated is in doping lithium vanadium compound particle surface and is formed as adjacent doping
Connection structure between lithium vanadium compound particle, to obtain the positive forerunner that plus plate current-collecting body surface is coated with positive electrode
Body；
G) by step F) obtained positive presoma is immersed in the hydrofluoric acid aqueous solution that mass concentration is 20-35%, into
Row is secondarily etched, and the time is 5-8 hours, and positive presoma is taken out, the hydrofluoric acid on cleaning removal positive presoma surface, true
It is dried 2-8 hours with 50-80 DEG C of temperature under empty condition, is obtaining film of the plus plate current-collecting body surface coated with positive electrode material layer just
Pole, wherein the positive electrode is doping lithium vanadium compound/graphene composite material, which has a word capitate
Grain shape, spherical or almost spherical adjacent doping lithium vanadium compound shaping particles are the end at the both ends of a word capitate
Grain is coated on the etched rear formation thin graphene conductive network of graphene of doping lithium vanadium compound particle surface, is located at upper
The graphene between adjacent doping lithium vanadium compound particle is stated to be configured to connect the one of above-mentioned doping lithium vanadium compound end particle
The handle linkage section of word hammer.
Further, step B) in the addition of hydrogen peroxide in mass be 0.2 times of concentrated sulfuric acid quality.
Further, step B) in the addition of potassium permanganate be 0.1 times of concentrated sulfuric acid quality.
Further, step C) in hydrofluoric acid aqueous solution mass concentration be 20%, etch period be 3 hours.
Further, step G) in hydrofluoric acid aqueous solution mass concentration be 30%, etch period be 6 hours.
Further, the power supply in the present invention can be secondary rechargeable power supply, such as lithium secondary battery.
The present invention also provides a kind of application of heartbeat detection device in portable medical device, the heart rate detection dress
It is set to aforementioned heartbeat detection device.
The present invention has the advantages that：
1, step B of the present invention) in so that artificial crystalline flake graphite is sequentially contacted with the concentrated sulfuric acid, hydrogen peroxide, potassium permanganate
Gradually, the progressive multiple mode of oxidizing of segmentation, be prepared with layered structure, the high graphite oxide of activity, be conducive to
Primary etching in subsequent technique and reduction on a current collector, form the graphene of high conductivity.
2, step C of the present invention) in will doping lithium vanadium compound/graphene oxide composite material once etched, pass through
Control etching condition, can be in step B) specific position on the surface of the high activity that is prepared layering graphite oxide forms etching
Position is induced, the controllability of etch product form secondarily etched in subsequent technique is improved, enhances the reliability of product and steady
It is qualitative.
3, step D of the present invention) in by ultrasonic disperse, disintegrated the aggregate structure of precursor powder, by what is agglomerated into
Macroaggregate disperses to be independent little particle precursor powder again.
4, step F of the present invention) in by will adulterate lithium vanadium compound and graphite oxide anode sizing agent be coated in anode collect
It is heat-treated on fluid and under vacuum, the graphene for being reduced to graphite oxide that there is high conductivity and adhesiveness, the stone
Black alkene is coated on doping lithium vanadium compound particle surface and is filled between adjacent doping lithium vanadium compound particle, will be adjacent
Doping lithium vanadium compound particle links together, and forms the connector between adjacent doping lithium vanadium compound particle, improves
The electric conductivity of positive electrode, enhances high rate performance so that and power supply can be run so that high magnification is (high-power), meanwhile, after reduction
Graphene will adulterate lithium vanadium compound particle and be bonded securely on a current collector, due to not containing Binder Composition etc. in slurry
Other non-active ingredients, thus increase the ratio energy of electrode.
5, step G of the present invention) in preforming membrane electrode is immersed in hydrofluoric acid aqueous solution carry out it is secondarily etched, lead to
The inductive effect crossed control etching condition and once etched, doping lithium vanadium compound of the formation with a word capitate grain shape/
Graphene composite material, since doping lithium vanadium compound surface forms thin graphene structure by etching, so that active
Material grains have high conductivity, disclosure satisfy that high magnification (high-power) demand of power supply.Meanwhile for composite material entirety shape
For shape, due to forming the " thin of recess by the graphene with high conductivity between adjacent doping lithium vanadium compound particle
Handle " structure, thus under conditions of long-time high magnification is run, since the graphene of " the thin handle " has high conductivity,
Preferably conductive path thus is provided, forms the inductive effect of electrical conduction so that active material particle surface passes through electricity
The SEI films that the redox reaction of solution liquid is constantly regenerating are preferentially stacked at the graphene position of " the thin handle ", with existing skill
Art is compared, effectively inhibit active material particle surface SEI films under high magnification service condition thicken and morphological disruption, thus can
Under conditions of (high-power) operation of long-time high magnification, to remain to keep higher capacity maintenance rate.
6, there is due to V in charge and discharge cycles high voltage platform, thus can be made using V systems blended positive pole active material
The positive electrode has the charging voltage more than 4.3, can fully discharge the energy in anode.
7, the sources M include the electrical conductivity that element can improve positive electrode, are conducive to be large current discharge, while can reduce
The cost of material significantly improves the high-rate discharge ability of battery.
8, the sources N are stablized comprising element performance, can be with stabilizing material crystal structure, in high voltage, greatly by adulterating N source elements
Electric current can improve the cyclical stability of battery when applying.
9, the sources A, which include element, can improve positive electrode crystal surface morphology, enhance the compatible of positive electrode and electrolyte
Property, the conducting power of lithium ion is improved, to improve positive electrode large current discharging capability and cyclical stability.
The present invention through the above scheme, provides the heart that a kind of service life, stability and safety are significantly improved
Rate detection device and its Medical Devices.
Specific implementation mode
The present invention will be described in more detail below by specific embodiment, but protection scope of the present invention not by
It is limited to these embodiments.
It is the structural schematic diagram of the grain shape of doping lithium vanadium compound/graphene composite material of the present invention in Fig. 1.
Fig. 2 is doping lithium vanadium compound/graphene composite material material SEM photograph prepared by the embodiment of the present invention 1.
Fig. 3 is doping lithium vanadium compound/graphene composite material material SEM photograph prepared by the embodiment of the present invention 2.
The embodiment tested the performance of the power supply in the present invention is as follows：
Film power supply, including film anode, film cathode and the diaphragm being placed between anode, cathode, the film is just
Pole include plus plate current-collecting body and the positive electrode coated on plus plate current-collecting body surface, the film cathode include negative current collector and
Negative material coated on negative current collector surface, the negative material include negative electrode active material, binder, the negative electrode active
Material is graphene；
Wherein, the positive electrode is doping lithium vanadium compound/graphene composite material, which hammers into shape with a word
The grain shape of shape, spherical or almost spherical adjacent doping lithium vanadium compound shaping particles are the end at the both ends of a word capitate
Particle, the graphene for being coated on doping lithium vanadium compound particle surface form thin graphene conductive network, are located at above-mentioned adjacent
Doping lithium vanadium compound particle between graphene be configured to connect the word hammer of above-mentioned doping lithium vanadium compound end particle
Handle linkage section, the cross-sectional maximum dimension of the handle linkage section are less than the grain size of the doping lithium vanadium compound end particle at both ends, institute
The grain size for stating doping lithium vanadium compound particle is 300-800nm, and the thickness of the thin layer is 15-30nm, the handle linkage section
Cross-sectional maximum dimension be 150-500nm；
Diaphragm is polypropylene, polyethylene composite membrane；
Electrolyte includes organic solvent and lithium salts, and organic solvent is ethylene carbonate：Propene carbonate：Methyl ethyl carbonate=
1:1:1, lithium salts is 1M lithium hexafluoro phosphates.
Embodiment 1
The thin film lithium power supply of the present embodiment is prepared by following steps：
A) raw material Li is weighed according to stoichiometric ratio2CO3、V2O5、MnO2、SnO2, phosphoric acid mixing, the ball milling under ethanol medium
It 5 hours, puts later in an oven in 60 DEG C of predryings 2 hours, obtains sol-gel precursor, be spray-dried later, obtained
To precursor powder；By presoma volume ratio be 85:In 15 nitrogen and the mixed atmosphere of fluorine gas, speed is heated with 10 DEG C/min
Rate heats up, and is heat-treated 26 hours in 800 DEG C of constant temperature, cools to room temperature with the furnace, and doping lithium vanadium compound is made
LiV0.601Mn0.161Sn0.238PO3.971F0.058, the doping lithium vanadium compound is with spherical or almost spherical grain shape；
B the concentrated sulfuric acid) is added in the reaction vessel, the artificial scale stone of 30% quality of concentrated sulfuric acid quality is added later
Ink, is slowly dropped into hydrogen peroxide after being stirred evenly under subfreezing temperature condition, the addition of hydrogen peroxide in mass is dense
0.2 times of sulfuric acid quality continues stirring 1-3 hours, and heating water bath, temperature is used to continue stirring 1 hour after rising to 50 DEG C later,
Deionized water is slowly added dropwise to be diluted, 1.5 times before the volume of mixed liquor becomes undiluted, is sufficiently stirred, Zhi Houjia
0.1 times of potassium permanganate for entering concentrated sulfuric acid quality, stirs, filters, dries, obtain graphene oxide powder, will be upper
Stating graphene oxide powder, to be added to ultrasonic disperse in acetone uniform, obtains graphene oxide dispersion；
C) by step A) obtained doping lithium vanadium compound particle is added to step B) obtained graphene oxide dispersion
In, it stirs, obtains mixed slurry, wherein adulterate the quality of lithium vanadium compound and graphene oxide in mixed slurry
Than being 85:15, filtering, drying are dried in drying box with 60 DEG C of temperature, and doping lithium vanadium compound/oxidation stone is obtained
Above-mentioned presoma is added the hydrofluoric acid aqueous solution that mass concentration is 15%, is once etched by black alkene composite material precursor,
Time is 2 hours, and gained etch product is cleaned, and removes the hydrofluoric acid of surface, and filtering, drying are once carved
Composite material precursor product after erosion；
D) by step C) obtained by precursor product be added in ethyl alcohol and carry out ultrasonic disperse processing, the time of supersound process is
3 hours, supersonic frequency 80KHz, filtering, drying obtained powdered presoma；
E) by step D) 2.5 times of N- crassitudes of the precursor powder quality are added in obtained powdered presoma
In ketone, stirring is allowed to uniformly mixed, obtains anode sizing agent；
F) by step E) obtained anode sizing agent is coated in as on the aluminium foil of plus plate current-collecting body, with 50 DEG C of temperature drying
It 5 hours, is heat-treated 18 hours with 200 DEG C of temperature in vacuum condition later, graphite oxide is reduced to have cross linked porous knot
The graphene of structure, the graphene coated is in doping lithium vanadium compound particle surface and is formed as adjacent doping lithium vanadium compound
Connection structure between grain, to obtain the positive presoma that plus plate current-collecting body surface is coated with positive electrode；
G) by step F) obtained positive presoma is immersed in the hydrofluoric acid aqueous solution that mass concentration is 25%, carry out two
Secondary etching, time are 5 hours, and positive presoma is taken out, the hydrofluoric acid on cleaning removal positive presoma surface, in vacuum condition
Under dried 6 hours with 60 DEG C of temperature, obtain film anode of the plus plate current-collecting body surface coated with positive electrode material layer, wherein institute
It is doping lithium vanadium compound/graphene composite material to state positive electrode；
H) using graphene as negative electrode active material, film cathode is prepared；
I) with the stacked structure of anode/diaphragm/cathode/diaphragm/anode, electrode assembly is formed, above-mentioned electrode assembly is put
Enter in shell, inject electrolyte and seal, form power supply preform, the power supply preform is after chemical synthesis technology, through dividing
Hold, combo, obtains thin film lithium secondary power supply, wherein the electrode stack quantity of above-mentioned stacked structure can be according to the output of power supply
Power is adjusted.
Embodiment 2
The thin film lithium power supply of the present embodiment is prepared by following steps：
A) raw material Li OH, V is weighed according to stoichiometric ratio2O3、TiO2、SnO2, ammonium dihydrogen phosphate mixing, in ethanol medium
Lower ball milling 3 hours is put in an oven in 56 DEG C of predryings 1.6 hours, obtains sol-gel precursor, sprayed later later
Mist is dried, and precursor powder is obtained；By presoma volume ratio be 80:In 20 argon gas and the mixed atmosphere of chlorine, with 5 DEG C/
The min rates of heat addition heat up, and are heat-treated 28 hours in 600 DEG C of constant temperature, cool to room temperature with the furnace, and doping lithium vanadium compound is made
LiV0.581Ti0.153Sn0.266PO3.972Cl0.056, the doping lithium vanadium compound is with spherical or almost spherical grain shape；
B the concentrated sulfuric acid) is added in the reaction vessel, the artificial scale stone of 50% quality of concentrated sulfuric acid quality is added later
Ink, is slowly dropped into hydrogen peroxide after being stirred evenly under subfreezing temperature condition, the addition of hydrogen peroxide in mass is dense
0.3 times of sulfuric acid quality continues stirring 3 hours, uses heating water bath, temperature to continue stirring 1 hour after rising to 60 DEG C later, delays
The slow deionized water that is added dropwise is diluted, and 2 times before the volume of mixed liquor becomes undiluted, is sufficiently stirred, is added later dense
0.1 times of potassium permanganate of sulfuric acid quality, stirs, filters, dries, obtain graphene oxide powder, by above-mentioned oxygen
It is uniform that graphite alkene powder is added to ultrasonic disperse in acetone, obtains graphene oxide dispersion；
C) by step A) obtained doping lithium vanadium compound particle is added to step B) obtained graphene oxide dispersion
In, it stirs, obtains mixed slurry, wherein adulterate the quality of lithium vanadium compound and graphene oxide in mixed slurry
Than being 90:10, filtering, drying are dried in drying box with 80 DEG C of temperature, and doping lithium vanadium compound/oxidation stone is obtained
Above-mentioned presoma is added the hydrofluoric acid aqueous solution that mass concentration is 20%, is once etched by black alkene composite material precursor,
Time is 3 hours, and gained etch product is cleaned, and removes the hydrofluoric acid of surface, and filtering, drying are once carved
Composite material precursor product after erosion；
D) by step C) obtained by precursor product be added in ethyl alcohol and carry out ultrasonic disperse processing, the time of supersound process is
8 hours, supersonic frequency 60KHz, filtering, drying obtained powdered presoma；
E) by step D) 3.5 times of N- crassitudes of the precursor powder quality are added in obtained powdered presoma
In ketone, stirring is allowed to uniformly mixed, obtains anode sizing agent；
F) by step E) obtained anode sizing agent is coated in as on the aluminium foil of plus plate current-collecting body, with 60 DEG C of temperature drying
It 8 hours, is heat-treated 8 hours with 280 DEG C of temperature in vacuum condition later, graphite oxide is reduced to have cross linked porous structure
Graphene, which lithium vanadium compound particle surface and is formed as adjacent doping lithium vanadium compound particle in doping
Between connection structure, to obtain plus plate current-collecting body surface be coated with positive electrode positive presoma；
G) by step F) obtained positive presoma is immersed in the hydrofluoric acid aqueous solution that mass concentration is 30%, carry out two
Secondary etching, time are 6 hours, and positive presoma is taken out, the hydrofluoric acid on cleaning removal positive presoma surface, in vacuum condition
Under dried 5 hours with 80 DEG C of temperature, obtain film anode of the plus plate current-collecting body surface coated with positive electrode material layer, wherein institute
It is doping lithium vanadium compound/graphene composite material to state positive electrode；
H) using graphene as negative electrode active material, film cathode is prepared；
I) with the stacked structure of anode/diaphragm/cathode/diaphragm/anode, electrode assembly is formed, above-mentioned electrode assembly is put
Enter in shell, inject electrolyte and seal, form power supply preform, the power supply preform is after chemical synthesis technology, through dividing
Hold, combo, obtain smart home device thin film lithium secondary power supply, wherein the electrode stack quantity of above-mentioned stacked structure can be with
It is adjusted according to the output power of power supply.
Embodiment 3
The thin film lithium power supply of the present embodiment is prepared by following steps：
A) raw material Li is weighed according to stoichiometric ratio2CO3、VO2、MnO2、SiO2, diammonium hydrogen phosphate mixing, in ethanol medium
Lower ball milling 6 hours is put in an oven in 80 DEG C of predryings 1 hour, obtains sol-gel precursor, spray later later
It is dry, obtain precursor powder；By presoma volume ratio be 65:In 35 argon gas and the mixed atmosphere of bromine gas, with 8 DEG C/min
The rate of heat addition heats up, and is heat-treated 25 hours in 700 DEG C of constant temperature, cools to room temperature with the furnace, and doping lithium vanadium compound is made
LiV0.666Mn0.166Si0.168PO3.982Br0.036, the doping lithium vanadium compound is with spherical or almost spherical grain shape；
B the concentrated sulfuric acid) is added in the reaction vessel, the artificial scale stone of 36% quality of concentrated sulfuric acid quality is added later
Ink, is slowly dropped into hydrogen peroxide after being stirred evenly under subfreezing temperature condition, the addition of hydrogen peroxide in mass is dense
0.35 times of sulfuric acid quality continues stirring 5 hours, and heating water bath, temperature is used to continue stirring 1 hour after rising to 75 DEG C later,
Deionized water is slowly added dropwise to be diluted, 3 times before the volume of mixed liquor becomes undiluted, is sufficiently stirred, is added later
0.3 times of potassium permanganate of concentrated sulfuric acid quality, stirs, filters, dries, obtain graphene oxide powder, will be above-mentioned
It is uniform that graphene oxide powder is added to ultrasonic disperse in acetone, obtains graphene oxide dispersion；
C) by step A) obtained doping lithium vanadium compound particle is added to step B) obtained graphene oxide dispersion
In, it stirs, obtains mixed slurry, wherein adulterate the quality of lithium vanadium compound and graphene oxide in mixed slurry
Than being 65:35, filtering, drying are dried in drying box with 70 DEG C of temperature, and doping lithium vanadium compound/oxidation stone is obtained
Above-mentioned presoma is added the hydrofluoric acid aqueous solution that mass concentration is 28%, is once etched by black alkene composite material precursor,
Time is 6 hours, and gained etch product is cleaned, and removes the hydrofluoric acid of surface, and filtering, drying are once carved
Composite material precursor product after erosion；
D) by step C) obtained by precursor product be added in ethyl alcohol and carry out ultrasonic disperse processing, the time of supersound process is
6 hours, supersonic frequency 80KHz, filtering, drying obtained powdered presoma；
E) by step D) 2.5 times of N- crassitudes of the precursor powder quality are added in obtained powdered presoma
In ketone, stirring is allowed to uniformly mixed, obtains anode sizing agent；
F) by step E) obtained anode sizing agent is coated in as on the aluminium foil of plus plate current-collecting body, with 75 DEG C of temperature drying
It 6 hours, is heat-treated 16 hours with 380 DEG C of temperature in vacuum condition later, graphite oxide is reduced to have cross linked porous knot
The graphene of structure, the graphene coated is in doping lithium vanadium compound particle surface and is formed as adjacent doping lithium vanadium compound
Connection structure between grain, to obtain the positive presoma that plus plate current-collecting body surface is coated with positive electrode；
G) by step F) obtained positive presoma is immersed in the hydrofluoric acid aqueous solution that mass concentration is 35%, carry out two
Secondary etching, time are 8 hours, and positive presoma is taken out, the hydrofluoric acid on cleaning removal positive presoma surface, in vacuum condition
Under dried 8 hours with 75 DEG C of temperature, obtain film anode of the plus plate current-collecting body surface coated with positive electrode material layer, wherein institute
It is doping lithium vanadium compound/graphene composite material to state positive electrode；
H) using graphene as negative electrode active material, film cathode is prepared；
I) with the stacked structure of anode/diaphragm/cathode/diaphragm/anode, electrode assembly is formed, above-mentioned electrode assembly is put
Enter in shell, inject electrolyte and seal, form power supply preform, the power supply preform is after chemical synthesis technology, through dividing
Hold, combo, obtains thin film lithium secondary power supply, wherein the electrode stack quantity of above-mentioned stacked structure can be according to the output of power supply
Power is adjusted.
Comparative example 1；
The doping lithium vanadium compound of cracking carbon is coated as active material, PVDF as binder, superconduction carbon black using surface
Film anode is prepared for conductive agent, film cathode is prepared by negative electrode active material of modified natural graphite, with 1 phase of previous embodiment
Same mode assembles film power supply.
Following table is the test data of embodiment and comparative example, and circulating current 0.1-0.5C, operating temperature is room temperature (25
DEG C) or high temperature (60 DEG C), charge cutoff voltage 4.5V, discharge cut-off voltage 2.5V.As it can be seen that with the comparative example using artificial graphite
Compare, power supply of the invention still maintains higher capacity conservation rate after being used for a long time, and under high temperature environment it is not on fire, do not explode,
Its service life, stability and safety are significantly improved.
Although present disclosure is discussed in detail by above preferred embodiment, but it would be recognized that above-mentioned
Description be not considered as limitation of the present invention.
Table 1
Although present disclosure is discussed in detail by above preferred embodiment, but it would be recognized that above-mentioned
Description be not considered as limitation of the present invention.
Claims (5)
1. a kind of portable medical device comprising heartbeat detection device, the heartbeat detection device include heart rate measurement component
And power supply, it is characterised in that：The heart rate measurement component is light sensation heart rate measuring device.
2. Medical Devices as described in claim 1, it is characterised in that：The portable medical device is shaped to Wrist belt-type.
3. Medical Devices as described in claim 1, it is characterised in that：The power supply include film anode, film cathode and
Be placed in anode, the diaphragm between cathode, the film anode include plus plate current-collecting body and coated on plus plate current-collecting body surface just
Pole material, the film cathode include negative current collector and the negative material coated on negative current collector surface, wherein it is described just
Pole material is doping lithium vanadium compound/graphene composite material, which has a grain shape of a word capitate, it is spherical or
The adjacent doping lithium vanadium compound shaping particles of almost spherical are the end particle at the both ends of a word capitate, are coated on elements doped lithium vanadium
The graphene on compound particle surface forms thin graphene conductive network, is located at above-mentioned adjacent doping lithium vanadium compound particle
Between graphene be configured to connect above-mentioned doping lithium vanadium compound end particle word hammer handle linkage section, handle connection
The cross-sectional maximum dimension of section is less than the grain size of the doping lithium vanadium compound end particle at both ends, the doping lithium vanadium compound particle
Grain size is 300-800nm, and the thickness of the thin layer is 15-30nm, and the cross-sectional maximum dimension of the handle linkage section is 150-
500nm。
4. Medical Devices as claimed in claim 3, it is characterised in that：The negative material includes negative electrode active material, bonding
Agent, the negative electrode active material are graphene.
5. a kind of application of heartbeat detection device in portable medical device, it is characterised in that：The heartbeat detection device is
Heartbeat detection device described in any one of claim 1,3-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267490.XA CN108459064A (en) | 2018-03-28 | 2018-03-28 | A kind of Medical Devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267490.XA CN108459064A (en) | 2018-03-28 | 2018-03-28 | A kind of Medical Devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108459064A true CN108459064A (en) | 2018-08-28 |
Family
ID=63237742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810267490.XA Withdrawn CN108459064A (en) | 2018-03-28 | 2018-03-28 | A kind of Medical Devices |
Country Status (1)
| Country | Link |
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| CN (1) | CN108459064A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108451522A (en) * | 2018-03-28 | 2018-08-28 | 北京华灿康国际医药研究有限公司 | A kind of Medical Devices |
| CN110224135A (en) * | 2019-07-26 | 2019-09-10 | 谢中淮 | A kind of electrically conductive composite |
-
2018
- 2018-03-28 CN CN201810267490.XA patent/CN108459064A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108451522A (en) * | 2018-03-28 | 2018-08-28 | 北京华灿康国际医药研究有限公司 | A kind of Medical Devices |
| CN110224135A (en) * | 2019-07-26 | 2019-09-10 | 谢中淮 | A kind of electrically conductive composite |
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