CN105845450A - Super capacitive electrode, manufacturing method of super capacitive electrode and super capacitor employing super capacitive electrode - Google Patents
Super capacitive electrode, manufacturing method of super capacitive electrode and super capacitor employing super capacitive electrode Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 44
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 42
- 239000002105 nanoparticle Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- 238000010189 synthetic method Methods 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- 239000007772 electrode material Substances 0.000 abstract description 6
- 230000010287 polarization Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000002082 metal nanoparticle Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 6
- 239000004531 microgranule Substances 0.000 description 6
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/24—Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention discloses a super capacitive electrode, a manufacturing method of the super capacitive electrode and a super capacitor employing the super capacitive electrode. The super capacitive electrode comprises a metallic object, a conductive film and a metal oxide layer, wherein the metallic object is formed by compacting a plurality of metal nano-particles, the conductive film is formed on a first side surface of the metallic object, the metal oxide layer is formed on the second side surface of the metallic object, the conductive film contains a conductive material, and the metal oxide layer contains a plurality of metal oxides or metal oxide nano-particles. An electrode having such a metal oxide/metal nano-compound structure is free of supporter and adhesives, and metal nano-particles of a large quantity are bonded together through compacting. Polarization loss of entire electrode material is ideally reduced. The super capacitive electrode is especially applicable to high-power capacitors, and the metal oxide layer makes the energy density and power density of the electrode very high.
Description
Technical field
The present invention relates to super capacitor technology field, particularly relate to super capacitor electrode and preparation method thereof
And apply its ultracapacitor.
Background technology
Ultracapacitor discharges high power density and the energy of moderately high energy density because it has simultaneously
Power, therefore becomes ideal energy accumulator.Ultracapacitor can be divided into two kinds: electrochemistry
Double layer capacity and fake capacitance.But the electrode material of existing ultracapacitor uses extra binding agent
Electrode is prepared, so the electrode obtained is with Unit Weight or unit volume performance the most greatly with additive
Reducing, easily have polarization loss simultaneously, energy density is not high enough, therefore limits its range,
Be not suitable for manufacturing on a large scale.
Summary of the invention
In order to solve the one or more of the problems referred to above, it is provided that a kind of super capacitor electrode and preparation side thereof
Method and apply its ultracapacitor.
According to an aspect of the invention, it is provided super capacitor electrode, including metallic object, conducting film
And metal oxide layer, metallic object is formed by the compacting of multiple metallic nano-particles, and conducting film is formed at
On first side of metallic object, metal oxide layer is formed on the second side of metallic object, conducting film
Comprising a kind of conductive material, metal oxide layer comprises multiple metal oxide nanoparticles.
In some embodiments, metallic nano-particle comprise nickel, cobalt, manganese, ferrum, bismuth, ruthenium,
Rhodium, iridium, the one of vanadium or alloy.
In some embodiments, metal oxide layer contains and the oxygen of same metal in metallic object
Compound.
In some embodiments, the particle diameter of metal oxide nanoparticles is 1～100nm.
In some embodiments, metal oxide layer is by entering metallic object in air or oxygen
The nonwoven fabric from filaments that row heat treatment is formed.
Product of the present invention has the beneficial effect that this metal-oxide/metal nano compound structure
Electrode without supporter and adhesive-free, be on the contrary by be compacted large number of metallic nano-particle make
Between microgranule bonded to each other together.With metallic object as core, in its first side and the second side
Upper have conducting film and nano-metal-oxide layer respectively, and the huge surface area utilizing nanostructured to produce can
To significantly increase the utilization rate of electrode material, and then modified electrode performance.This nano structural conductive i.e.
Metallic object core network decreases the polarization loss of whole electrode material ideally, is therefore particularly suitable for height
The application of power capacitor, and metal oxide layer makes electrode have high-energy-density and high power
Density.
According to another aspect of the present invention, it is provided that the preparation method of a kind of super capacitor electrode, it is special
Levy and be, comprise the following steps:
1) large number of metallic nano-particle is synthesized；
2) by step 1) in large number of metallic nano-particle compacting formed a metallic object；
3) in step 2) in described metallic object the first side on deposit a conducting film, Yi Jitong
Cross and metallic object is carried out heat treatment on its second side, form a metal oxide layer.
In some embodiments, metallic nano-particle uses polyhydric alcohol synthetic method to prepare.
In some embodiments, step 3) temperature of heat treatment is 180～800 degrees Celsius.
In some embodiments, aforesaid electrode is comprised.
The electrode prepared by said method its provide the benefit that: can receive by adjusting initial metal
The aperture of rice microgranule, improves the high conductivity of metallic object, simultaneously by optimizing Heat Treatment Control metal oxygen
The degree of crystallinity of compound layer, thus prepare the electrode with high conductivity, resistivity is less than 1 Ω cm.
According to another aspect of the present invention, also provide for a kind of ultracapacitor, comprise aforesaid electricity
Pole.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of super capacitor electrode of the present invention；
Fig. 2 is the charge characteristic figure of the electrode of the present invention；
Fig. 3 is the charge characteristic figure of the electrode of the present invention；
Fig. 4 is the additional charge performance plot of the electrode of the present invention；
Fig. 5 is the additional charge performance plot of the electrode of the present invention.
Detailed description of the invention
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
According to an aspect of the invention, it is provided super capacitor electrode, including metallic object 01, conduction
Film 02 and metal oxide layer 03, metallic object 01 is formed by the compacting of multiple metallic nano-particles, leads
Electrolemma 02 is formed on the first side of metallic object 01, and metal oxide layer 03 is formed at metallic object 01
The second side on, conducting film 02 comprises a kind of conductive material, and metal oxide layer 03 comprises multiple
Metal oxide nanoparticles.
Wherein, formed metallic object 01 metallic nano-particle comprise nickel, cobalt, manganese, ferrum, bismuth, ruthenium,
Rhodium, iridium, the one of vanadium or alloy.This metallic object 01 is not in order to fix these metallic nano-particles
And containing binding agent or supporter, these substantial amounts of metals that are formed by of metallic object 01 are received on the contrary
Rice microgranule is compacted and is mutually glued and is formed.And the conductive material that conducting film 02 is comprised can
With selected from platinum, gold, silver or alloy.Conducting film 02 can be used for the load connecting electrode with ultracapacitor
Stream part.Metal oxide layer 03 is by metallic object 01 is carried out heat treatment in air or oxygen
The nonwoven fabric from filaments formed, this metal oxide layer 03 is formed on the second side of metallic object 01.Quite
Being metallic core network in metallic object 01, metal oxide layer 03 is deposited round this metallic object 01
?.Metal oxide layer 03 contains and the oxide of same metal in metallic object 01, i.e. comprises
Nickel, cobalt, manganese, ferrum, bismuth, ruthenium, rhodium, iridium, the oxide of a kind of or alloy of vanadium.Such as, gold
Belong to body 01 and contain nickel oxidation nanometer microgranule containing nickel nanocrystals, metal oxide layer 03.Metal oxygen
The particle diameter of compound nanoparticle is 1～100nm.
Product of the present invention has the beneficial effect that this metal-oxide/metal nano compound structure
Electrode without supporter and adhesive-free, be on the contrary by be compacted large number of metallic nano-particle make
Between microgranule bonded to each other together.With metallic object 01 as core, in its first side and the second side
Having conducting film 02 and nano-metal-oxide layer 03 on face respectively, utilize that nanostructured produces is huge
Surface area can significantly increase the utilization rate of electrode material, and then modified electrode performance.This nanometer i.e.
Structural conductive metallic object 01 core network decreases the polarization loss of whole electrode material ideally, therefore
It is particularly suitable for the application of high power capacitor, and metal oxide layer 03 makes electrode have high-energy
Density and high power density.
According to another aspect of the present invention, it is provided that the preparation method of a kind of super capacitor electrode, it is special
Levy and be, comprise the following steps:
1) large number of metallic nano-particle is synthesized；
2) by step 1) in large number of metallic nano-particle compacting formed a metallic object 01；
3) in step 2) in described metallic object 01 the first side on deposit a conducting film 02,
And on its second side, form a metal oxide layer by metallic object 01 being carried out heat treatment
03。
Wherein, step 1) metallic nano-particle use polyhydric alcohol synthetic method prepare.Certainly can also lead to
Cross additive method to prepare, such as electronation and decomposition method, sol-gel process, sonochemistry method, micro-
Emulsion method, hydro-thermal method, thermal evaporation and condensation method and CVD.
Wherein, step 3) the temperature of heat treatment be 180～800 degrees Celsius.Preferably, temperature is
250 degree.
The preparation of embodiment 1 metallic nano-particle
Solid state N iCl2·6H2O (Alfa Aesar, 1.0g) is at room temperature dissolved in second two by mechanical agitation
Alcohol (Alfa Aesar, 250mL).This solution is then heated to reflux at 195 DEG C, reaches equilibrium temperature
After, solid state N aBH4(Strem Chemicals, 2.0g) joins in this solution as reducing agent and is mixed
Compound.This mixture maintains the reflux for about 30min subsequently, is then cooled to room temperature.Obtained granule
With acetone and ethanol repeated washing in ultra sonic bath, then obtain target at 100 DEG C of dried in vacuum overnight and produce
Thing.The structure of the metallic nano-particle prepared with this method is come by X-ray diffraction and/or electronic diffraction
Characterize, a diameter of 4.4nm of gained microgranule.
The preparation of embodiment 2 metallic object 01
In Example 1, the metallic nano-particle powder of 5mg is placed in hydraulic press, passes through mechanical ramming
Obtain the plane particle of a diameter of 4mm.These are little particle stabilized and are easily processed, it is not necessary to additive
Also without supporting substrate.At the scanning electron microscopy that these short grained surfaces and junction section obtain
Mirror image shows that this metallic object 01 is highly porous structure.
The formation of embodiment 3 metallic object 01 upper conductive film 02
Sunk on a side of the prepared metallic object 01 of embodiment 2 by conventional vapor deposition techniques
Amass and obtain conducting film 02.
The formation of metal oxide layer 03 on embodiment 4 metallic object 01
By the metallic object 01 in embodiment 3 is carried out heat treatment, temperature is 180～800 degrees Celsius,
The degree of crystallinity of metal oxide layer 03 can be adjusted by changing annealing temperature.Preferably, exist
Temperature is to make metal oxide layer 03 be formed at 01 1 sides of metallic object when 250 degree, i.e. obtains
There is the nickel oxide phase of the least crystallization.The ratio of metallic nano-particle and metal oxide nanoparticles can
Determine with the magnetization loss by electrode described before and after contrasting this heat treatment process.
According to a further aspect in the invention, also provide for a kind of capacitor, comprise aforesaid electrode.
The electrode prepared by said method, the hole of the metallic nano-particle that can be initiateed by adjustment
Footpath, improves the high conductivity of metallic object 01, simultaneously by optimizing Heat Treatment Control metal oxide layer
The degree of crystallinity of 03, thus prepare the electrode with high conductivity, resistivity is less than 1 Ω cm.Commonly use
Manufacture method can not adjust this electrode conductivity and degree of crystallinity, further during manufacturing electrode simultaneously
The method commonly used do not produce the electrode with an effective current collector network, not there is ideal conducting
Rate.
One important advantage of ultracapacitor be exactly the height of their power density ratio common batteries very
Many.Therefore, the high power performance of electrode of the present invention characterizes is by a series of circulation time-measuring electric potentials
Measure, with charge/discharge current density until 28.6A/g (being equivalent to the power density of 10kW/kg).Fig. 2
With the charge characteristic that Fig. 3 shows electrode of the present invention, with the situation of constant charge/discharge current density.
The Reversible redox reaction relevant to fake capacitance is the process that a high diffusion controls.Therefore,
It is expected to than electric capacity (SC) and the energy density that therefore obtains, by the charge/discharge speed fast at one
Time reduce.As it is shown in figure 5, a slow charge/discharge speed (1A/g), electrode of the present invention is observed
Arrive the high-energy-density (being equivalent to 905F/g than electric capacity SC) of 62Wh/kg.
But, in the described power density (about 0.4kW/kg) that this speed obtains, relative to commonly
The power density of electrochemical double layer capacitor (EDLCs) is little, and EDLCs shows surface charge
A kind of fast mechanism of storage.When charge/discharge speed increases to 28.6A/g, obtain 10kW/kg's
High power density, as shown in Figure 5.Although corresponding energy density is down to 26Wh/kg and (is equivalent to 380
F/g is than electric capacity SC), but it is still that one of optimum performance having report up to now.
In great majority need the application of an energy storage system, collection energy process is typically slow (example
As, wind-force or solar power plant), but the energy of this storage must quickly discharge and meet these
The electricity needs of application.Therefore, the NiO/Ni nano-complex electrode of the present invention is first little at one
Electric current density (1A/g) is charged, and then discharges in a series of higher velocity of discharge.This discharge power is close
Degree, discharge Average specific capacities, and discharge calculation energy density can putting from circulation time-measuring electric potential curve
Electricity part obtains.Fig. 4 and Fig. 5 shows that the charge character of typical electrode of the present invention is with different discharge charge
The situation of electric current density.As shown in Figure 4 and Figure 5, this discharge energy density is the most slightly by the velocity of discharge
Impact.There is high-energy-density (ca.60Wh/kg) and the outstanding person of high power density (10kw/kg) simultaneously
Go out performance.
In addition to above-mentioned energy density and power density, usual way also uses extra bonding
Agent, additive and substrate manufacture electrode.Therefore, obtained device is with Unit Weight or unit volume
Can just undesirably reduce.Further, conventional method trends towards cost height and is difficult to advise greatly
Mould merchandized handling.On the contrary, electrode of the present invention reaches performance is far superior to ordinary electrode.Institute
State electrode firm, monoblock, additive-free and without adhesive.The manufacture method of the present invention is relatively easy also
And be that merchandized handling is feasible.
Above-described is only some embodiments of the present invention, it is noted that general for this area
For logical technical staff, on the premise of the creation without departing from the present invention is conceived, it is also possible to make other
Deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (9)
1. a super capacitor electrode, it is characterized in that, including metallic object (01), conducting film (02) and metal oxide layer (03), described metallic object (01) is formed by the compacting of multiple metallic nano-particles, described conducting film (02) is formed on the first side of described metallic object (01), described metal oxide layer (03) is formed on the second side of described metallic object (01), described conducting film (02) comprises a kind of conductive material, and described metal oxide layer (03) comprises multiple metal oxide nanoparticles.
Super capacitor electrode the most according to claim 1, it is characterised in that described metallic nano-particle comprises nickel, cobalt, manganese, ferrum, bismuth, ruthenium, rhodium, iridium, the one of vanadium or alloy.
Super capacitor electrode the most according to claim 1, it is characterised in that described metal oxide layer (03) contains and the oxide of same metal in described metallic object (01).
Super capacitor electrode the most according to claim 1, it is characterised in that the particle diameter of described metal oxide nanoparticles is 1～100nm.
Super capacitor electrode the most according to claim 1, it is characterised in that described metal oxide layer (03) is by described metallic object (01) carries out the nonwoven fabric from filaments of heat treatment formation in air or oxygen.
6. the preparation method of a super capacitor electrode, it is characterised in that comprise the following steps:
1) large number of metallic nano-particle is synthesized；
2) by step 1) in large number of metallic nano-particle compacting formed a metallic object (01)；
3) in step 2) in described metallic object (01) the first side on deposit a conducting film (02), and on its second side, form a metal oxide layer (03) by metallic object (01) being carried out heat treatment.
The preparation method of super capacitor electrode the most according to claim 6, it is characterised in that described metallic nano-particle uses polyhydric alcohol synthetic method to prepare.
The preparation method of super capacitor electrode the most according to claim 6, it is characterised in that described step 3) temperature of heat treatment is 180～800 degrees Celsius.
9. a ultracapacitor, it is characterised in that comprise the electrode described in claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182244.5A CN105845450A (en) | 2016-03-28 | 2016-03-28 | Super capacitive electrode, manufacturing method of super capacitive electrode and super capacitor employing super capacitive electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182244.5A CN105845450A (en) | 2016-03-28 | 2016-03-28 | Super capacitive electrode, manufacturing method of super capacitive electrode and super capacitor employing super capacitive electrode |
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| Publication Number | Publication Date |
|---|---|
| CN105845450A true CN105845450A (en) | 2016-08-10 |
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| CN201610182244.5A Pending CN105845450A (en) | 2016-03-28 | 2016-03-28 | Super capacitive electrode, manufacturing method of super capacitive electrode and super capacitor employing super capacitive electrode |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006059546A (en) * | 2004-08-17 | 2006-03-02 | Matsushita Electric Ind Co Ltd | Manganese dry cell, its anode can, and manufacturing method of those |
| CN104637673A (en) * | 2015-03-09 | 2015-05-20 | 李光武 | Large value capacitor manufacturing method and capacitor battery, battery pack |
| CN105097275A (en) * | 2014-05-13 | 2015-11-25 | 苏州容电储能科技有限公司 | Method of increasing effective contact area of energy storage film and electrode |
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2016
- 2016-03-28 CN CN201610182244.5A patent/CN105845450A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006059546A (en) * | 2004-08-17 | 2006-03-02 | Matsushita Electric Ind Co Ltd | Manganese dry cell, its anode can, and manufacturing method of those |
| CN105097275A (en) * | 2014-05-13 | 2015-11-25 | 苏州容电储能科技有限公司 | Method of increasing effective contact area of energy storage film and electrode |
| CN104637673A (en) * | 2015-03-09 | 2015-05-20 | 李光武 | Large value capacitor manufacturing method and capacitor battery, battery pack |
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