CN105355953A - Microbial fuel cell based on 2,6 di-tert-butyl pyridine medium - Google Patents

Microbial fuel cell based on 2,6 di-tert-butyl pyridine medium Download PDF

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Publication number
CN105355953A
CN105355953A CN201510841558.7A CN201510841558A CN105355953A CN 105355953 A CN105355953 A CN 105355953A CN 201510841558 A CN201510841558 A CN 201510841558A CN 105355953 A CN105355953 A CN 105355953A
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tert
fuel cell
anode
butyl pyridine
layer
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曾丽
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Chengdu Jiushidu Industrial Product Design Co Ltd
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Chengdu Jiushidu Industrial Product Design Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0025—Organic electrolyte
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inert Electrodes (AREA)

Abstract

The invention discloses a microbial fuel cell based on a 2,6 di-tert-butyl pyridine medium, and belongs to the field of biological fuel cells. The microbial fuel cell based on the 2,6 di-tert-butyl pyridine medium comprises a reactor, a cell positive electrode and a cell negative electrode, wherein the reactor is arranged in a shell, the cell positive electrode and the cell negative electrode are arranged outside the shell, the bottom of the cell positive electrode is connected to one end of the reactor, and the bottom of the cell negative electrode is connected to the other end of the reactor. The microbial fuel cell based on the 2,6 di-tert-butyl pyridine medium has the advantages that the electrode surface activation area is large, the electrostatic interaction between microorganisms and the electrode surfaces is enhanced, microorganism adsorption performance is improved, catalysis performance is good, and therefore the cell yield is increased and the production cost is reduced.

Description

A kind of microbiological fuel cell based on 2,6-di-tert-butyl pyridine medium
Technical field
The present invention relates to a kind of biological fuel cell, particularly a kind of microbiological fuel cell based on 2,6-di-tert-butyl pyridine medium.
Background technology
Along with continuing to increase of world population number, the mankind are subject to the impact of energy resources deficiency and ecological deterioration day by day, therefore tap a new source of energy and are paid attention to widely, and utilize reproducible biomass power generation to be a kind of effective means.Microbiological fuel cell (Microbialfuelcells, MFC), as a kind of new method utilizing microbial metabolism to produce electric energy, receives the concern of more people in recent years.It is a kind of device utilizing microbe to be electric energy as catalyst by converts chemical energy, and microbe can metabolism organic substance, produces electric energy simultaneously.But existing microbiological fuel cell generally has the low shortcoming of electrogenesis amount; Anode surface area of the prior art is general less simultaneously, be unfavorable for a large amount of attachments of microbe, and catalysis efficiency applicable surface is narrow; In prior art, the platinum that adopts as cathod catalyst more, although excellent catalytic effect, too expensive.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, there is provided a kind of electrode surface active area larger, increase the electrostatic interaction between microbe and electrode surface, increase microorganism adsorption, catalytic performance is good, thus improve electricity output, and reduce the microbiological fuel cell of one based on 2,6-di-tert-butyl pyridine medium of production cost.
The technical solution used in the present invention is as follows:
One of the present invention is based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, and comprise setting reactor in the enclosure and the anode be arranged on outside shell and battery cathode, the bottom of described anode is connected to one end of reactor; The bottom of described battery cathode is connected to the other end of reactor; Described reactor comprises capsul and the anode be arranged in capsul and negative electrode, described anode and cathode surface are attached with microbe, amberplex is provided with between described anode and negative electrode, described anode is connected with anode, described negative electrode is connected with battery cathode, is full of medium in described capsul.
Owing to have employed technique scheme, reactor produces electric energy, can form loop by connection anode and battery cathode, the electric energy release produced by reactor; Reactor is separated into anode chamber and cathode chamber by amberplex, under anode chamber's anaerobic environment, organic substance decomposes and discharges electronics and proton under microbial action, electronics relies on suitable electron transfer mediator effectively to transmit between biological components and anode, and be delivered to negative electrode formation electric current by external circuit, and proton is delivered to negative electrode by proton exchange membrane, oxidant obtains electronics at negative electrode and is reduced and is combined into water with proton.
One of the present invention is based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, and described anode is the mesoporous graphene aerogel of surperficial titanium/N doping, and described negative electrode is VO 2/ S-AC nickel foam air cathode.
Owing to have employed technique scheme, anode electrode surface active area of the present invention is comparatively large, increases the electrostatic interaction between microbe and electrode surface, and increase microorganism adsorption, catalytic performance is good; Cathode catalysis performance of the present invention is good, and the price of vanadium is lower than platinum, reduces production cost.
One of the present invention is based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, and described microbe is Klebsiella ozaenae, and described medium is 2,6-di-tert-butyl pyridine.
Owing to have employed technique scheme, under the effect of TMAO Klebsiella ozaenae, degraded produces trimethylamine, and then generates dimethylamine and formaldehyde etc., and the oxygen in cathode chamber, under the catalytic action of negative electrode, obtains electronics and is reduced and is combined into water with proton.
One of the present invention, based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, is provided with flame-resistant insulation layer between described anode and battery cathode, described flame-resistant insulation layer is overlying on capsul upper surface; The bottom of described shell is provided with media exchanger, and described media exchanger is connected with capsul inside by passage.
Owing to have employed technique scheme, flame-resistant insulation layer by flame-resistant insulation, can improve the security performance of battery; Can constantly supplement new medium by media exchanger and enter reactor, ensure the continuous firing of battery, extend the useful life of battery.
One of the present invention is based on 2, the microbiological fuel cell of 6-di-tert-butyl pyridine medium, described ionic membrane exchange membrane comprises cell nafion proton membrane one, and the lower floor of described cell nafion proton membrane one is coated with silicon dioxide layer, and the lower floor of described silicon dioxide is coated with cell nafion proton membrane two; The thickness of described silicon dioxide layer is 450nm, and described cell nafion proton membrane one surface is covered with PDDA layer, and described cell nafion proton membrane two surface is covered with PSS layer.
Owing to have employed technique scheme, SiO 2the sulfonate radical on surface hydroxyl and cell nafion proton membrane surface interacts and serves physical crosslinking polymer effect, PDDA layer and PSS layer can realize being cross-linked sulfonic acid group in cell nafion proton membrane, improve the water content of film, proton is more easily freely passed through, improve proton conductivity and the energy efficiency of ionic membrane, avoid microbial metabolic products to the pollution of ionic membrane simultaneously, ensure that the proton conductivity of ionic membrane, improve the energy efficiency of battery.
One of the present invention is based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, and the mesoporous graphene aerogel of described surperficial titanium/N doping has three-dimensional netted loose structure, and pore size is 9 μm; Described VO 2the VO on/S-AC nickel foam air cathode surface 2/ S-AC layer is nanometer thin sheet, described VO 2the thickness of/S-AC layer is 300nm, described VO 2the dimethyl silicone polymer on/S-AC nickel foam air cathode surface and the load capacity of carbon black are 6.25mg/cm 2and 1.56mg/cm 2.
Owing to have employed technique scheme, three-dimensional grapheme good conductivity, biocompatibility is high, the aerogel structure that easy formation is three-dimensional porous, the mesoporous graphene aerogel of titanium/N doping has hydrophilic surface, and reduce surface of graphene oxide hydrophobicity, electrolyte more easily infiltrates, conductivity is better, improves its reactivity area in anolyte.
VO 2/ S-AC nickel foam air cathode, VO 2there is higher redox catalysis active, by VO 2mix with S-AC as Catalytic Layer, utilize chemical reaction that carbonaceous conductive material and catalyst are formed composite material, add electro-chemical activity current potential and surface area, microbiological fuel cell can be made to obtain good electricity generation performance, in order to reduce the production cost of microorganism fuel cell cathode further, more be close to the practical application of microbiological fuel cell, select price relatively cheap, the higher nickel foam of conductivity is as current collector material, under the prerequisite of control electrode cost, obtain the efficiency of fuel cell generation of higher microbiological fuel cell.
One of the present invention is based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, and described anode is prepared from by following steps:
Step one: by the concentrated sulfuric acid: graphite powder: sodium nitrate mass ratio 65:1:0.6 adds graphite powder and sodium nitrate under the condition of ice bath in the concentrated sulfuric acid, after stirring and dissolving 30min, according to graphite powder: potassium permanganate mass ratio 1:5, potassium permanganate is added in mixed solution, after stirring 10h, according to the concentrated sulfuric acid: deionized water volume ratio 1:1 adds deionized water in mixed solution, mixture being placed in vacuum degree is under the condition of 0.93, 52 DEG C are slowly warming up to according to the speed of 1.2 DEG C/h, after keeping 52 DEG C of constant temperature to continue to stir 22h, in mixed solution, hydrogen peroxide is added than hydrogen peroxide volume ratio 1:0.1 according to the concentrated sulfuric acid, centrifugal stir 2.5h at 52 DEG C of temperature after, Separation of Solid and Liquid is got solid, solid uses watery hydrochloric acid and the deionized water rinsing of 5% respectively, graphene oxide is obtained after drying,
Step 2: graphene oxide is configured to the solution that concentration is 1.3mg/mL with deionized water; in solution, tetrazotization Tritanium/Trititanium is added according to mass ratio 8:1; after the ultrasonic 2h of room temperature; after reacting 10min under the condition of microwave reaction 100W; mixed solution is placed in teflon-lined thermal response still; be filled with argon gas to seal as after protection gas; vacuumize and reach vacuum degree 0.8; be warming up to 180 DEG C of reaction 36h; normal temperature is cooled to, the obtained mesoporous graphene aerogel of surperficial titanium/N doping under argon shield gas exists.
Owing to have employed technique scheme, obtained anode---the mesoporous graphene aerogel of surperficial titanium/N doping has three-dimensional netted loose structure, and tridimensional network there will not be disintegration phenomenon; Pore size is 9 μm, and applicable bacterium enters.
One of the present invention is based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, and described negative electrode is made by following steps:
Step one: according to mass ratio 1:1 by polyvinyl alcohol, is mixed with the catalysis emulsion that concentration is 10%, by VO after polytetrafluoroethylene mixes 2mix according to mass ratio 2:1 with S-AC, take VO according to mass ratio 1:3 2/ S-AC mixture and catalysis emulsion, by VO 2mixed solution, through ultrasonic wave mixing 40min, is heated to 65 DEG C by/S-AC mixture and catalysis emulsion, and Keep agitation 2h breakdown of emulsion, obtains Catalytic Layer raw material;
Step 2: the thin slice by tablet press machine, nickel foam being pressed into 0.6mm, by Catalytic Layer raw material equably blade coating in nickel foam upper surface, be 70kPa at pressure subsequently, power is microwave reaction 5min under the condition of 100W, powder unnecessary for sheet surface is swept gently, obtains the nickel foam being covered with Catalytic Layer;
Step 3: dimethyl silicone polymer is configured to the solution that concentration is 10% with DMF, according to dimethyl silicone polymer: carbon black mass adds carbon black than 1:4 in solution, after mixing, obtain diffusion layer raw material, diffusion layer raw material uniform application is being covered with the nickel foam lower surface of Catalytic Layer, smearing thickness is 0.1mm, puts into drying box subsequently under the condition of 80 DEG C to dry, and obtains VO 2/ S-AC nickel foam air cathode.
Owing to have employed technique scheme, the negative electrode prepared---VO 2the VO on/S-AC nickel foam air cathode surface 2/ S-AC layer is nanometer thin sheet, and the external surface area after two kinds of catalyst compounds significantly improves, and active sites increases, VO 2at the formation microcellular structure of activated carbon surface, increase considerably porosity, accelerated material Transfer.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, electrode surface active area is comparatively large, increases the electrostatic interaction between microbe and electrode surface, and increase microorganism adsorption, catalytic performance is good, and electric energy productive rate is high.
2, reduce the production cost of microorganism fuel cell cathode, be more close to the practical application of microbiological fuel cell, under the prerequisite of control electrode cost, obtain the efficiency of fuel cell generation of higher microbiological fuel cell.
3, flame-resistant insulation, improves the security performance of battery; Constantly supplement new medium and enter reactor, ensure the continuous firing of battery, extend the useful life of battery.
4, improve proton conductivity and the energy efficiency of ionic membrane, avoid microbial metabolic products to the pollution of ionic membrane simultaneously, ensure that the proton conductivity of ionic membrane, improve the energy efficiency of battery.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium;
Fig. 2 is a kind of operation principle schematic diagram based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium;
Fig. 3 is the SEM figure of the three-dimensional netted loose structure of the mesoporous graphene aerogel of surperficial titanium/N doping;
Fig. 4 is VO 2the VO on/S-AC nickel foam air cathode surface 2the SEM figure of/S-AC layer.
Mark in figure: 1 is reactor, and 2 is anode, and 3 is negative electrode, and 4 is microbe, and 5 is medium, 6 is capsul, and 7 is amberplex, and 8 is anode, and 9 is battery cathode, and 10 is flame-resistant insulation layer, 11 is shell, and 12 is filled media, and 13 is media exchanger, and 14 is passage.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make the object of invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown in Figures 1 to 4, a kind of based on 2, the microbiological fuel cell of 6-di-tert-butyl pyridine medium, comprise and be arranged on reactor in shell 11 1 and the anode 8 be arranged on outside shell 11 and battery cathode 9, the bottom of anode 8 is connected to one end of reactor 1; The bottom of battery cathode 9 is connected to the other end of reactor 1.
Reactor 1 comprises capsul 6 and the anode 2 be arranged in capsul 6 and negative electrode 3, anode 2 and negative electrode 3 surface attachment have microbe 4, and be provided with amberplex 7 between anode 2 and negative electrode 3, anode 2 is connected with anode 8, negative electrode 3 is connected with battery cathode 9, is full of medium 5 in capsul 6.
Anode 2 is the mesoporous graphene aerogel of surperficial titanium/N doping, and negative electrode 3 is VO 2/ S-AC nickel foam air cathode.
Microbe 4 is Klebsiella ozaenae, and medium 5 is 2,6-di-tert-butyl pyridine.Medium 5 TMAO is under the effect of Klebsiella ozaenae 4, and degraded produces trimethylamine, and then generates dimethylamine and formaldehyde etc., and the oxygen in cathode chamber, under the catalytic action of negative electrode, obtains electronics and is reduced and is combined into water with proton.Make when external circuit and anode 8 are connected with battery cathode 9, electronics moves generation current, thus the electric energy release that reactor is produced.
Flame-resistant insulation layer 10 is provided with between anode 8 and battery cathode 9, flame-resistant insulation layer 10 is overlying on capsul 6 upper surface, flame-resistant insulation layer 10 comprises 37% vinylite, 21% silica gel, 5% plasticiser, 3% dibasic lead stearate, 3% containing oxygen silicone oil, 4% platinum complex, 5% ethynylcyclohexanol, 3% mica, 9% siloxane oligomer and 10% repefral; Filled media 12 is full of between shell 11 and capsul 6, filled media 12 is identical with the material of flame-resistant insulation layer 10, filled media 12 comprises 37% vinylite, 21% silica gel, 5% plasticiser, 3% dibasic lead stearate, 3% containing oxygen silicone oil, 4% platinum complex, 5% ethynylcyclohexanol, 3% mica, 9% siloxane oligomer and 10% repefral; The bottom of shell 11 is provided with media exchanger 13, media exchanger 13 is connected with capsul 6 inside by passage 14, medium 5 TMAO can under the effect of media exchanger 13, constantly add in reactor, and the unnecessary water of generation in reactor is by under the effect of media exchanger 13, leave reactor, thus ensure the work of reactor continuous and effective.
Ionic membrane exchange membrane 7 comprises cell nafion proton membrane one, and the lower floor of cell nafion proton membrane one is coated with silicon dioxide layer, and the lower floor of silicon dioxide is coated with cell nafion proton membrane two; The thickness of silicon dioxide layer is 450nm, and cell nafion proton membrane one surface is covered with PDDA layer, and cell nafion proton membrane two surface is covered with PSS layer.
Titanium/N doping mesoporous graphene aerogel in surface has three-dimensional netted loose structure, and pore size is 9 μm; VO 2the VO on/S-AC nickel foam air cathode surface 2/ S-AC layer is nanometer thin sheet, VO 2the thickness of/S-AC layer is 300nm, VO 2the dimethyl silicone polymer on/S-AC nickel foam air cathode surface and the load capacity of carbon black are 6.25mg/cm 2and 1.56mg/cm 2.
Embodiment 2
Anode 2---the mesoporous graphene aerogel of surperficial titanium/N doping is prepared from by following steps:
Step one: by the concentrated sulfuric acid: graphite powder: sodium nitrate mass ratio 65:1:0.6 adds graphite powder and sodium nitrate under the condition of ice bath in the concentrated sulfuric acid, after stirring and dissolving 30min, according to graphite powder: potassium permanganate mass ratio 1:5, potassium permanganate is added in mixed solution, after stirring 10h, according to the concentrated sulfuric acid: deionized water volume ratio 1:1 adds deionized water in mixed solution, mixture being placed in vacuum degree is under the condition of 0.93, 52 DEG C are slowly warming up to according to the speed of 1.2 DEG C/h, after keeping 52 DEG C of constant temperature to continue to stir 22h, in mixed solution, hydrogen peroxide is added than hydrogen peroxide volume ratio 1:0.1 according to the concentrated sulfuric acid, centrifugal stir 2.5h at 52 DEG C of temperature after, Separation of Solid and Liquid is got solid, solid uses watery hydrochloric acid and the deionized water rinsing of 5% respectively, graphene oxide is obtained after drying,
Step 2: graphene oxide is configured to the solution that concentration is 1.3mg/mL with deionized water; in solution, tetrazotization Tritanium/Trititanium is added according to mass ratio 8:1; after the ultrasonic 2h of room temperature; after reacting 10min under the condition of microwave reaction 100W; mixed solution is placed in teflon-lined thermal response still; be filled with argon gas to seal as after protection gas; vacuumize and reach vacuum degree 0.8; be warming up to 180 DEG C of reaction 36h; normal temperature is cooled to, the obtained mesoporous graphene aerogel of surperficial titanium/N doping under argon shield gas exists.
Embodiment 3
Negative electrode 3---VO 2/ S-AC nickel foam air cathode is made by following steps:
Step one: according to mass ratio 1:1 by polyvinyl alcohol, the catalysis emulsion that concentration is 10% is mixed with after polytetrafluoroethylene mixes, VO2 and S-AC is mixed according to mass ratio 2:1, VO2/S-AC mixture and catalysis emulsion is taken according to mass ratio 1:3, by VO2/S-AC mixture and catalysis emulsion through ultrasonic wave mixing 40min, mixed solution is heated to 65 DEG C, Keep agitation 2h breakdown of emulsion, obtains Catalytic Layer raw material;
Step 2: the thin slice by tablet press machine, nickel foam being pressed into 0.6mm, by Catalytic Layer raw material equably blade coating in nickel foam upper surface, be 70kPa at pressure subsequently, power is microwave reaction 5min under the condition of 100W, powder unnecessary for sheet surface is swept gently, obtains the nickel foam being covered with Catalytic Layer;
Step 3: dimethyl silicone polymer is configured to the solution that concentration is 10% with DMF, according to dimethyl silicone polymer: carbon black mass adds carbon black than 1:4 in solution, after mixing, obtain diffusion layer raw material, diffusion layer raw material uniform application is being covered with the nickel foam lower surface of Catalytic Layer, smearing thickness is 0.1mm, puts into drying box subsequently under the condition of 80 DEG C to dry, and obtains VO2/S-AC nickel foam air cathode.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. one kind based on 2, the microbiological fuel cell of 6-di-tert-butyl pyridine medium, it is characterized in that: comprise the reactor (1) that is arranged in shell (11) and be arranged on shell (11) anode outward (8) and battery cathode (9), the bottom of described anode (8) is connected to one end of reactor (1); The bottom of described battery cathode (9) is connected to the other end of reactor (1); Described reactor (1) comprises capsul (6) and the anode (2) that is arranged in capsul (6) and negative electrode (3), described anode (2) and negative electrode (3) surface attachment have microbe (4), amberplex (7) is provided with between described anode (2) and negative electrode (3), described anode (2) is connected with anode (8), described negative electrode (3) is connected with battery cathode (9), is full of medium (5) in described capsul (6).
2. a kind of microbiological fuel cell based on 2,6-di-tert-butyl pyridine medium as claimed in claim 1, is characterized in that: described anode (2) is the mesoporous graphene aerogel of surperficial titanium/N doping, and described negative electrode (3) is VO 2/ S-AC nickel foam air cathode.
3. a kind of microbiological fuel cell based on 2,6-di-tert-butyl pyridine medium as claimed in claim 1 or 2, it is characterized in that: described microbe (4) is Klebsiella ozaenae, described medium (5) is 2,6-di-tert-butyl pyridine.
4. as claimed in claim 3 a kind of based on 2, the microbiological fuel cell of 6-di-tert-butyl pyridine medium, it is characterized in that: be provided with flame-resistant insulation layer (10) between described anode (8) and battery cathode (9), described flame-resistant insulation layer (10) is overlying on capsul (6) upper surface; The bottom of described shell (11) is provided with media exchanger (13), and described media exchanger (13) is connected with capsul (6) inside by passage (14).
5. as claimed in claim 4 a kind of based on 2, the microbiological fuel cell of 6-di-tert-butyl pyridine medium, it is characterized in that: described ionic membrane exchange membrane (7) comprises cell nafion proton membrane one, the lower floor of described cell nafion proton membrane one is coated with silicon dioxide layer, and the lower floor of described silicon dioxide is coated with cell nafion proton membrane two; The thickness of described silicon dioxide layer is 450nm, and described cell nafion proton membrane one surface is covered with PDDA layer, and described cell nafion proton membrane two surface is covered with PSS layer.
6. the one as described in claim 4 or 5, based on the microbiological fuel cell of 2,6-di-tert-butyl pyridine medium, is characterized in that: the mesoporous graphene aerogel of described surperficial titanium/N doping has three-dimensional netted loose structure, and pore size is 9 μm; Described VO 2the VO on/S-AC nickel foam air cathode surface 2/ S-AC layer is nanometer thin sheet, described VO 2the thickness of/S-AC layer is 300nm, described VO 2the dimethyl silicone polymer on/S-AC nickel foam air cathode surface and the load capacity of carbon black are 6.25mg/cm 2and 1.56mg/cm 2.
7. a kind of microbiological fuel cell based on 2,6-di-tert-butyl pyridine medium as claimed in claim 6, it is characterized in that, described anode (2) is prepared from by following steps:
Step one: by the concentrated sulfuric acid: graphite powder: sodium nitrate mass ratio 65:1:0.6 adds graphite powder and sodium nitrate under the condition of ice bath in the concentrated sulfuric acid, after stirring and dissolving 30min, according to graphite powder: potassium permanganate mass ratio 1:5, potassium permanganate is added in mixed solution, after stirring 10h, according to the concentrated sulfuric acid: deionized water volume ratio 1:1 adds deionized water in mixed solution, mixture being placed in vacuum degree is under the condition of 0.93, 52 DEG C are slowly warming up to according to the speed of 1.2 DEG C/h, after keeping 52 DEG C of constant temperature to continue to stir 22h, in mixed solution, hydrogen peroxide is added than hydrogen peroxide volume ratio 1:0.1 according to the concentrated sulfuric acid, centrifugal stir 2.5h at 52 DEG C of temperature after, Separation of Solid and Liquid is got solid, solid uses watery hydrochloric acid and the deionized water rinsing of 5% respectively, graphene oxide is obtained after drying,
Step 2: graphene oxide is configured to the solution that concentration is 1.3mg/mL with deionized water; in solution, tetrazotization Tritanium/Trititanium is added according to mass ratio 8:1; after the ultrasonic 2h of room temperature; after reacting 10min under the condition of microwave reaction 100W; mixed solution is placed in teflon-lined thermal response still; be filled with argon gas to seal as after protection gas; vacuumize and reach vacuum degree 0.8; be warming up to 180 DEG C of reaction 36h; normal temperature is cooled to, the obtained mesoporous graphene aerogel of surperficial titanium/N doping under argon shield gas exists.
8. a kind of microbiological fuel cell based on 2,6-di-tert-butyl pyridine medium as claimed in claim 6, it is characterized in that, described negative electrode (3) is made by following steps:
Step one: according to mass ratio 1:1 by polyvinyl alcohol, is mixed with the catalysis emulsion that concentration is 10%, by VO after polytetrafluoroethylene mixes 2mix according to mass ratio 2:1 with S-AC, take VO according to mass ratio 1:3 2/ S-AC mixture and catalysis emulsion, by VO 2mixed solution, through ultrasonic wave mixing 40min, is heated to 65 DEG C by/S-AC mixture and catalysis emulsion, and Keep agitation 2h breakdown of emulsion, obtains Catalytic Layer raw material;
Step 2: the thin slice by tablet press machine, nickel foam being pressed into 0.6mm, by Catalytic Layer raw material equably blade coating in nickel foam upper surface, be 70kPa at pressure subsequently, power is microwave reaction 5min under the condition of 100W, powder unnecessary for sheet surface is swept gently, obtains the nickel foam being covered with Catalytic Layer;
Step 3: dimethyl silicone polymer is configured to the solution that concentration is 10% with DMF, according to dimethyl silicone polymer: carbon black mass adds carbon black than 1:4 in solution, after mixing, obtain diffusion layer raw material, diffusion layer raw material uniform application is being covered with the nickel foam lower surface of Catalytic Layer, smearing thickness is 0.1mm, puts into drying box subsequently under the condition of 80 DEG C to dry, and obtains VO 2/ S-AC nickel foam air cathode.
CN201510841558.7A 2015-11-28 2015-11-28 Microbial fuel cell based on 2,6 di-tert-butyl pyridine medium Pending CN105355953A (en)

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