CN102637857A - Preparation method of large-aperture foamy graphite composite electrode - Google Patents
Preparation method of large-aperture foamy graphite composite electrode Download PDFInfo
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- CN102637857A CN102637857A CN2012101191026A CN201210119102A CN102637857A CN 102637857 A CN102637857 A CN 102637857A CN 2012101191026 A CN2012101191026 A CN 2012101191026A CN 201210119102 A CN201210119102 A CN 201210119102A CN 102637857 A CN102637857 A CN 102637857A
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Abstract
The invention relates to the technical field of electrode materials of batteries and provides a preparation method of a large-aperture foamy graphite composite electrode. The composite electrode disclosed by the invention is prepared by bonding large-aperture foamy graphite with a graphite plate by a conductive bonding agent to prepare a conductive composite material, and connecting the graphite plate layer with a conducting wire to form the composite electrode. The conducting wire of the composite electrode is led out of the graphite plate made of the composite material, so that the technical defects of non-tight sealing at the joint of the conducting wire and the foamy graphite, low mechanical strength and easiness in corrosion when the conducing wire is directly led out of the large-aperture foamy graphite are solved. A battery constructed by the composite electrode has the characteristics of high output power, stable performance, prolonged service life and the like.
Description
Technical field
The invention belongs to technical field of battery electrode materials, be specifically related to a kind of large aperture foamy graphite method for preparing composite electrode.
Background technology
Main at present use carbon or graphite material are as battery electrode material, like carbon plate, carbon-point, graphite block etc.But this type of material specific area is little, and density is high, and being made into electrode material generally has larger volume, is unfavorable for the battery miniaturization Design.Foamy graphite is widely used in multiple field, like [1] such as high temperature capacitance material, catalyst carrier, filter, timbering materials owing to its low-density, high conductivity, high heat conductance characteristics.In view of the foamy graphite porous, high-specific surface area, low resistance and corrosion resistance characteristics [2]; Especially the large aperture (＞2mm) foamy graphite, percent opening is convenient to material Transfer up to 98%; Reduce material diffusional resistance [3], can be used as the ideal electrode material and be applied in the multiple battery, like lead acid accumulator; Microbiological fuel cell, the bottom sediment microbiological fuel cell.The porous electrode of having developed at present all has good performance, can quick and precisely detect Escherichia coli (E.coli O157:H7) [4] like porous class carbon paste electrode; Nickel porous is ferroelectric to have advantages of high catalytic activity [5]; The porous foam copper anode has not only increased surface area, and significantly alleviates electrode change in volume [6] in charge and discharge process.Foamy carbon, foamy graphite material have application promise in clinical practice; Like polar plate of lead acid storage battery, the three-dimensional structure foamy carbon is made skeleton, can be three-dimensional with active material and contact; Make electric current and electromotive force more even distribution on battery pole plates; Thereby reduce battery surface electrochemical polarization and polarization resistance, help active material and transform, improve active material utilization and specific energy [7].Carbon fiber and high-temperature-resistant adhesive make the foam carbon fiber composite material of all thickness and different shape; Have characteristics such as good rigidly, good, high temperature resistant, the anti-ablation of heat preservation and insulation, gasproof stream wash away, long service life, replacing is easy, use cost is low, be mainly used in industries [8] such as heat treatment, powder metallurgy, chemical machinery, cermet, mould, electronics.Carbon foam structural insulated panel comprise the carbon foam core and with carbon foam core binder course, it mainly uses structural detail and the fire retardant elements [9] that comprises dwelling house and commercial building, aircraft and boats and ships.
But large aperture foamy graphite porous, easy crisp causes lead to be connected difficulty with foamy graphite, and the lead junction is poorly sealed; The shortcoming that mechanical strength is low causes the sealing of lead and macropore foamy graphite junction not firm, and lead corrodes easily; The junction is prone to come off; Influence electrode quality, reduce battery performance, shorten electrode life.For overcoming these shortcomings, the present invention has designed a kind of large aperture foamy graphite method for preparing composite electrode.
List of references
[1] Chen Wen. the application in aviation of carbon foam and graphite foam. aeronautical maintenance and engineering [J], 2005,3 (23): 33-35.
[2] Zhang Hongbo, Luo Ruiying, Liu Tao etc. the structure of carbon foam and performance thereof. the plain technology of charcoal [J], 2005,24 (1): 21-25.
[3]J.M.Friedrich，C.Ponce-de-Le-on，G.W.Reade.Reticulated?vitreous?carbon?as?an?electrode?material.Journal?of?Electroanalytical?Chemistry[J].2004，15(6)：203-217
[4] permitted sharp sword, Du Jingjing, Deng Yan etc. porous class carbon paste electrode carboxylated and to the detection of Escherichia coli O157:H7. analytical chemistry research report [J] .2010,9 (38): 1261-1266.
[5] Zhao Zhenyu, Li Peijin, Meng Qing letter etc. the ferroelectric utmost point electroreduction preparation 2,2 of nickel porous '-dichlorohydrazobenzene. chemical industry progress [J] .2010,9 (29): 1640-1646.
[6] Hu Sijiang, Li Qingyu, yellow generation is steady etc. and porous foam copper supports the preparation and the performance of tin thin film anode material. China YouSe Acta Metallurgica Sinica [J] .2009,11 (19): 2006-2010.
[7] Liu Fan, Zhang Zhijian, Chen Xiaokui etc. a kind of method for making lead-acid battery pole plate .2010-9-22. patent No.: CN201010166314.0.
[8] Shang Donghong. the foam carbon fiber composite material .2008-11-18. patent No.: 200810228852.0.
[9] DJ Miller, the Y Griffin, M fills in Ge Er. carbon cellular insulation plate .2006-12-7. patent: 200680051268.1.
Summary of the invention
The objective of the invention is to be connected difficulty with lead in order to overcome the large aperture foamy graphite that exists in the prior art, the shortcoming that the lead junction is perishable, come off has been invented a kind of large aperture foamy graphite method for preparing composite electrode.
For addressing the above problem, the present invention realizes through following technical scheme:
The first step: Composite Preparation
Said large aperture foamy graphite and the concrete preparation method of graphite cake composite material are: use 600 orders respectively, 800 order sand paper polish flat graphite cake, and foamy graphite is smooth with 600 order sand paperings.Above-mentioned product is put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Above-mentioned product is placed in the air dry oven 60～80 ℃ of oven dry.
Be coated with the common glue bond agent that last layer contains the electrically conductive graphite powder on the graphite cake that above-mentioned drying is good; Then foamy graphite is bonded on the graphite cake; Foamy graphite, conduction tack coat and graphite cake are sticked together, have certain mechanical strength, can satisfy application request.
Be coated with the high temperature resistant binder that last layer contains the electrically conductive graphite powder on the graphite cake that above-mentioned drying is good; Then at 1000～1500 ℃ of condition sintering; Make foamy graphite, conduction tack coat and firm being sticked together of graphite cake, have certain mechanical strength, can satisfy application request.
Second step: combination electrode preparation
On the graphite cake of the above-mentioned composite material for preparing, using electric drill to make a call to a diameter is 2～3mm, and the degree of depth is the aperture of 5～8mm.Threaded in this hole, same diameter contact screw is screwed into, in screw, insert copper cash, with insulating epoxy lead is sealed in the aperture.
The 3rd step: combination electrode assembled battery
The above-mentioned combination electrode for preparing is put into cylindrical battery groove (height 22cm, diameter 15cm) bottom as anode, add bottom sediment (deposit height 10cm), add seawater (sea height 8cm) on the deposit, common carbon plate negative electrode is placed in the seawater.Connect external resistance through lead between the anode and cathode and be assembled into the bottom sediment microbiological fuel cell.
The normal carbon block anode is put into cylindrical battery groove (height 22cm, diameter 15cm) bottom, add bottom sediment (deposit height 10cm), add seawater (sea height 8cm) on the deposit, the above-mentioned combination electrode for preparing is placed in the seawater as negative electrode.Connect external resistance through lead between the anode and cathode and be assembled into the bottom sediment microbiological fuel cell.
The 4th step: combination electrode and battery performance test
Combination electrode is made cathode potential and is directly measured through saturated calomel electrode (SCE, the Shanghai exact science 232C of Co., Ltd), makes anode potential and deducts cathode potential through OCP and calculate.Cathode and anode and adjustable resistor case (ZX21, Great Wall, sky and water Electronic Instruments Plant, resistance 0～10000 Ω) are composed in series the closed-loop path, change electric current, magnitude of voltage and treat stablize record data behind the 15min, drafting electrode and battery polarization curve.Power is through formula P=UI (U voltage; The I electric current) calculates, power divided by the test electrode apparent area, is drawn the power density curve.Cathode and anode and 5000 Ω external resistances are composed in series the closed-loop path, carry out long-term discharge test, the stability of test compound electrode and assembled battery thereof.
The invention effect
The present invention has following advantage:
(1) combination electrode of the present invention's preparation combines large aperture foamy graphite and graphite cake through the conduction tack coat, and lead directly goes out to have increased lead and electrode junction mechanical strength from graphite cake one side joint.
(2) combination electrode of the present invention's preparation, lead directly picks out from graphite cake, and lead and graphite cake contact-making surface are the plane, are convenient to sealing, have overcome the large aperture foamy graphite and have directly linked to each other with lead, and the hole of foamy graphite causes the poorly sealed shortcoming in junction.
(3) combination electrode of the present invention's preparation; Lead directly picks out from graphite cake, and the junction good seal makes electrolyte be not easy to see through lead and foamy graphite junction, large aperture is dipped into lead internal corrosion lead; Strengthen the corrosion resistance of combination electrode, prolonged combination electrode useful life.
(4) combination electrode of the present invention's preparation, mechanical strength improves, and corrosion resistance strengthens, and is convenient to practical application.
(5) combination electrode constitutes battery thus, and battery performance is stable, and the life-span improves.
Description of drawings
Fig. 1 is that lead of the present invention connects structural representation Fig. 1 of combination electrode) large aperture foamy graphite 2) graphite cake 3) conduction tack coat 4) face seal, waterproof insulation epoxy resin 5) lead.
Embodiment
Come a nearly step to specify the present invention below in conjunction with accompanying drawing and specific embodiment.
Embodiment 1: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln is placed on foamy graphite and graphite cake in the air dry oven then, 60 ℃ of oven dry.The conduction tack coat is made up of in 3: 1 ratios double-component cold curing carbon fiber glue and graphite powder.Foamy graphite and graphite cake solidify 120min through the adhesion of conduction tack coat under 40 ℃ of conditions, preparation foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 5mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 2: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 70 ℃ of oven dry.The conduction tack coat is made up of in 2: 1 ratios double-component cold curing carbon fiber glue and graphite powder.Foamy graphite and graphite cake solidify 120min through the adhesion of conduction tack coat under 40 ℃ of conditions, preparation foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 6mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 3: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 80 ℃ of oven dry.The conduction tack coat is made up of in 1: 1 ratio double-component cold curing carbon fiber glue and graphite powder.Foamy graphite and graphite cake solidify 120min through the adhesion of conduction tack coat under 40 ℃ of conditions, preparation foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 3mm, the degree of depth is the aperture of 8mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 4: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 60 ℃ of oven dry.The conduction tack coat is made up of in 3: 1 ratios double-component cold curing carbon fiber glue and graphite powder.Foamy graphite and graphite cake solidify 12h through the adhesion of conduction tack coat under 25 ℃ of conditions, preparation foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 8mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 5: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 70 ℃ of oven dry.The conduction tack coat is made up of in 2: 1 ratios double-component cold curing carbon fiber glue and graphite powder.Foamy graphite and graphite cake solidify 12h through the adhesion of conduction tack coat under 25 ℃ of conditions, preparation foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 5mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 6: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 80 ℃ of oven dry.The conduction tack coat is made up of in 1: 1 ratio double-component cold curing carbon fiber glue and graphite powder.Foamy graphite and graphite cake solidify 12h through the adhesion of conduction tack coat under 25 ℃ of conditions, preparation foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 6mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 7: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 60 ℃ of oven dry.The conduction tack coat is made up of in 3: 1 ratios nano combined glue of high temperature resistant inorganic and graphite powder.Foamy graphite and graphite cake are through the adhesion of conduction tack coat, and sintering 20min under 1000 ℃ of conditions prepares the foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 8mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 8: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 70 ℃ of oven dry.The conduction tack coat is made up of in 2: 1 ratios nano combined glue of high temperature resistant inorganic and graphite powder.Foamy graphite and graphite cake are through the adhesion of conduction tack coat, and sintering 20min under 1000 ℃ of conditions prepares the foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 3mm, the degree of depth is the aperture of 5mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 9: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 80 ℃ of oven dry.The conduction tack coat is made up of in 1: 1 ratio nano combined glue of high temperature resistant inorganic and graphite powder.Foamy graphite and graphite cake are through the adhesion of conduction tack coat, and sintering 20min under 1000 ℃ of conditions prepares the foamy graphite composite material.On the graphite cake of the above-mentioned composite material for preparing, use electric drill to make a call to a diameter and be 3mm, the degree of depth is the aperture of 6mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 10: present embodiment is used to explain method for preparing composite electrode.
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 60 ℃ of oven dry.The conduction tack coat is made up of in 3: 1 ratios nano combined glue of high temperature resistant inorganic and graphite powder.Foamy graphite and graphite cake are through the adhesion of conduction tack coat, and sintering 10min under 1300 ℃ of conditions prepares the foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 3mm, the degree of depth is the aperture of 8mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 11: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 70 ℃ of oven dry.The conduction tack coat is made up of in 2: 1 ratios nano combined glue of high temperature resistant inorganic and graphite powder.Foamy graphite and graphite cake are through the adhesion of conduction tack coat, and sintering 10min under 1300 ℃ of conditions prepares the foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 5mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 12: present embodiment is used to explain method for preparing composite electrode
Foamy graphite is through 600 order sand paperings, and graphite cake is smooth through 600 orders, 800 order sand paperings.Foamy graphite and graphite cake are put into distilled water, sonicated 15min, sonicated 20min in acetone soln then.Foamy graphite and graphite cake are placed in the air dry oven 80 ℃ of oven dry.The conduction tack coat is made up of in 1: 1 ratio nano combined glue of high temperature resistant inorganic and graphite powder.Foamy graphite and graphite cake are through the adhesion of conduction tack coat, and sintering 10min under 1300 ℃ of conditions prepares the foamy graphite composite material.On above-mentioned composite material graphite cake, use electric drill to make a call to a diameter and be 2mm, the degree of depth is the aperture of 6mm, and is threaded in this hole, and same diameter contact screw is screwed into, and in screw, inserts copper cash, with insulating epoxy lead is sealed in the aperture.
Embodiment 13: present embodiment is used to explain that combination electrode is applied to the bottom sediment microbiological fuel cell
Above-mentioned combination electrode is put into cylindrical battery groove (height 22cm, diameter 15cm) bottom as anode, add bottom sediment (deposit height 10cm), add seawater (sea height 8cm) on the deposit, common carbon plate negative electrode is placed in the seawater.Connect external resistance through lead between the anode and cathode and be assembled into the bottom sediment microbiological fuel cell.
Cathode potential is directly measured through saturated calomel electrode (SCE, the Shanghai exact science 232C of Co., Ltd), and the composite anode current potential deducts cathode potential through OCP and calculates.Negative electrode, composite anode and adjustable resistor case (ZX21, Great Wall, sky and water Electronic Instruments Plant, resistance 0～10000 Ω) are composed in series the closed-loop path, change electric current, magnitude of voltage and treat stablize record data behind the 15min, drafting composite anode and battery polarization curve.Power is through formula P=UI (U voltage; The I electric current) calculates, power divided by the composite anode apparent area, is drawn the power density curve.With negative electrode, composite anode and 5000 Ω resistance are composed in series the closed-loop path, carry out long-term discharge test, the test compound anode stability.The result shows: composite anode polarization curve slope reduces, and anti-polarizability increases.This anode porous performance has reduced the material Transfer resistance, and the bottom sediment microbiological fuel cell internal resistance of assembling drops to 241 Ω, maximum power density 151.3mW/m
2, corresponding current density is 347.0mA/m
2Through 6 months long-term discharge tests show the composite anode current potential maintain-450mV about, cell output voltage maintains 650mV, has relative stability.
Embodiment 14: present embodiment is used to explain that combination electrode is applied to the bottom sediment microbiological fuel cell
The normal carbon block anode is put into cylindrical battery groove (height 22cm, diameter 15cm) bottom, add bottom sediment (deposit height 10cm), add seawater (sea height 8cm) on the deposit, above-mentioned combination electrode is placed in the seawater as negative electrode.Connect external resistance through lead between the anode and cathode and be assembled into the bottom sediment microbiological fuel cell.
The composite cathode current potential is directly measured through saturated calomel electrode (SCE, the Shanghai exact science 232C of Co., Ltd).Composite cathode, anode and adjustable resistor case (ZX21, Great Wall, sky and water Electronic Instruments Plant, resistance 0～10000 Ω) are composed in series the closed-loop path, change electric current, magnitude of voltage and treat stablize record data behind the 15min, drafting composite cathode and battery polarization curve.Power is through formula P=UI (U voltage; The I electric current) calculates, power divided by the composite cathode apparent area, is drawn the power density curve.With composite cathode, anode and 5000 Ω resistance are composed in series the closed-loop path, carry out long-term discharge test, test compound cathode stabilization property.The result shows: composite cathode polarization curve slope reduces, and anti-polarizability increases.This negative electrode porous performance enlarges the oxygen reduction reaction three phase boundary, and the bottom sediment microbiological fuel cell internal resistance of assembling drops to 208 Ω, maximum power density 181.5mW/m
2, corresponding current density is 397.1mA/m
2Show that through 6 months long-term discharge tests the composite cathode current potential maintains about 250mV, cell output voltage maintains 660mV, has relative stability.
Embodiment 15: present embodiment is used to explain that combination electrode is applied to double-chamber microbiological fuel cell
Above-mentioned combination electrode is put into cylindrical battery groove (height 20cm, diameter 10cm) as anode, add organic substance waste water such as containing glucose (height 15cm); Above-mentioned combination electrode is put into another cylindrical battery groove (height 20cm as negative electrode; Diameter 10cm), add common waste water (height 15cm) and bubbling air, the centre links to each other with flexible pipe and isolates with PEM; External circuit connects through lead, the assembling double-chamber microbiological fuel cell.
The composite cathode current potential is directly measured through saturated calomel electrode (SCE, the Shanghai exact science 232C of Co., Ltd), and the composite anode current potential deducts the composite cathode current potential through OCP and calculates.Composite cathode, composite anode and adjustable resistor case (ZX21, Great Wall, sky and water Electronic Instruments Plant; Resistance 0～10000 Ω) is composed in series the closed-loop path; Change electric current, magnitude of voltage and treat stablize record data behind the 15min, drafting composite cathode, composite anode and battery polarization curve.Power is through formula P=UI (U voltage; The I electric current) calculates, power divided by the combination electrode apparent area, is drawn the power density curve.With composite cathode, composite anode and the series connection of 5000 Ω resistance are carried out long-term discharge test, test compound cathode stabilization property.The result shows: this microbiological fuel cell internal resistance drops to 157 Ω, and maximum power density reaches 213.7mW/m
2, corresponding current density is 453.2mA/m
2Show that through 6 months long-term discharge tests the composite cathode current potential maintains about 250mV, the composite anode current potential maintains-450mV about, cell output voltage maintains 700mV, has relative stability
Claims (5)
1. large aperture foamy graphite method for preparing composite electrode.
2. according to the said a kind of large aperture of claim 1 foamy graphite method for preparing composite electrode, it is characterized in that at first preparing large aperture foamy graphite and graphite cake composite material.
3. be that large aperture foamy graphite and graphite cake bond through the binding agent that contains the electrically conductive graphite powder according to the concrete preparation method of the said composite material of claim 2, process composite material.
4. be that large aperture foamy graphite and graphite cake bond through the high temperature resistant binder that contains the electrically conductive graphite powder earlier according to the concrete preparation method of the said composite material of claim 2, high temperature sintering is processed composite material again.
5. according to the said a kind of large aperture of claim 1 foamy graphite method for preparing composite electrode, it is characterized in that the composite material graphite cake connects lead, forms combination electrode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153700A (en) * | 2015-03-23 | 2016-11-23 | 中国海洋大学 | A kind of organic pollutant degradation in-situ monitoring submarine sedimentary strata biological fuel cell sensing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005031898A1 (en) * | 2003-09-26 | 2005-04-07 | Jfe Chemical Corporation | Composite particle and, utilizing the same, negative electrode material for lithium ion secondary battery, negative electrode and lithium ion secondary battery |
| CN101734939A (en) * | 2008-11-18 | 2010-06-16 | 尚东红 | Foam carbon fiber composite material |
| CN102074711A (en) * | 2010-12-14 | 2011-05-25 | 中国海洋大学 | Preparation and application of iron oxide/polyaniline composite anode |
-
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005031898A1 (en) * | 2003-09-26 | 2005-04-07 | Jfe Chemical Corporation | Composite particle and, utilizing the same, negative electrode material for lithium ion secondary battery, negative electrode and lithium ion secondary battery |
| CN101734939A (en) * | 2008-11-18 | 2010-06-16 | 尚东红 | Foam carbon fiber composite material |
| CN102074711A (en) * | 2010-12-14 | 2011-05-25 | 中国海洋大学 | Preparation and application of iron oxide/polyaniline composite anode |
Non-Patent Citations (1)
| Title |
|---|
| J.M. FRIEDRICH等: "Reticulated vitreous carbon as an electrode material", 《JOURNAL OF ELECTROANALYTICAL CHEMISTRY》, vol. 561, 1 January 2004 (2004-01-01), pages 203 - 217 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153700A (en) * | 2015-03-23 | 2016-11-23 | 中国海洋大学 | A kind of organic pollutant degradation in-situ monitoring submarine sedimentary strata biological fuel cell sensing system |
| CN106153700B (en) * | 2015-03-23 | 2020-05-05 | 中国海洋大学 | Seabed sediment layer biofuel cell sensor system for in-situ monitoring of organic pollutant degradation |
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Application publication date: 20120815 |