VO2/S-AC nickel foam air cathode

An air cathode and VO2 technology, applied in the electrode field, can solve the problems of a large number of unfavorable microorganisms attached, narrow catalytic performance, small anode surface area, etc., to achieve the effect of increasing microbial adsorption, improving electronic conductivity, and good catalytic performance

Inactive Publication Date: 2016-02-24
CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing microbial fuel cells generally have the disadvantage of low electricity production; at the same time, the surface area of ​​the anode in the prior art is generally small, which is not conducive to the attachment of a large number of microorganisms, and the catalytic performance is narrow; in the prior art, platinum is mostly used as Cathodic catalyst, although the catalytic effect is good, but too expensive

Method used

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  • VO2/S-AC nickel foam air cathode
  • VO2/S-AC nickel foam air cathode
  • VO2/S-AC nickel foam air cathode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of VO 2 / S-AC foam nickel air cathode is prepared by the following steps:

[0038] Step 1: According to the mass ratio of 1:1, mix polyvinyl alcohol and polytetrafluoroethylene evenly to prepare a catalytic emulsion with a concentration of 10%, and mix VO 2 Mix evenly with S-AC according to the mass ratio of 2:1, and weigh VO according to the mass ratio of 1:3 2 / S-AC mixture and catalytic emulsion, the VO 2 / S-AC mixture and catalytic emulsion were mixed ultrasonically for 40 minutes, the mixed solution was heated to 65°C, and stirred continuously for 2 hours to break the emulsion to obtain the raw material of the catalytic layer;

[0039] Step 2: Press the nickel foam into a 0.6mm sheet by a tablet press, and evenly scrape the raw material of the catalytic layer on the upper surface of the foam nickel, and then microwave it for 5 minutes under the condition of a pressure of 70kPa and a power of 100W, and the surface of the sheet The excess powder is gently s...

Embodiment 2

[0043] Such as Figure 1 to Figure 4 As shown, a VO 2 / S-AC foam nickel air cathode, the electrode is applied to the method of microbial fuel cell based on p-trimethylamine oxide medium, a kind of microbial fuel cell based on p-trimethylamine oxide medium, including reactor 1 and The battery positive pole 8 and the battery negative pole 9 are arranged outside the casing 11 , the bottom of the battery positive pole 8 is connected to one end of the reactor 1 ; the bottom of the battery negative pole 9 is connected to the other end of the reactor 1 .

[0044] The reactor 1 includes a sealed shell 6 and an anode 2 and a negative electrode 3 arranged in the sealed shell 6, microorganisms 4 are attached to the surface of the anode 2 and the negative electrode 3, an ion exchange membrane 7 is arranged between the anode 2 and the negative electrode 3, and the anode 2 and the battery The positive pole 8 is connected, the cathode 3 is connected with the negative pole 9 of the battery, ...

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Abstract

The invention discloses a VO2 / S-AC nickel foam air cathode and belongs to the field of electrodes. The preparation method of the VO2 / S-AC nickel foam air cathode includes the three steps of preparing a catalytic layer raw material, preparing nickel foam coated with a catalytic layer and preparing the VO2 / S-AC nickel foam air cathode. The VO2 / S-AC nickel foam air cathode has the advantages that the VO2 / S-AC nickel foam air cathode is larger in electrode surface activation area, the electrostatic effect between microbes and the electrode surface is improved, the microbial adsorptivity is improved, the catalytic performance is good, accordingly the power output is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to an electrode, especially a VO 2 / S-AC foam nickel air cathode. Background technique [0002] As the world's population continues to increase, human beings are increasingly affected by insufficient energy resources and environmental degradation. Therefore, the development of new energy sources has been widely valued, and the use of renewable biomass energy for power generation is an effective means. Microbial fuel cells (MFC), as a new method of using microbial metabolism to generate electricity, has attracted more and more attention in recent years. It is a device that uses microorganisms as catalysts to convert chemical energy into electrical energy. Microorganisms can metabolize organic substances and generate electrical energy at the same time. However, the existing microbial fuel cells generally have the disadvantage of low electricity production; at the same time, the surface area of ​​the anode in the prior art is gener...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88H01M4/90H01M8/16
CPCH01M4/8652H01M4/8673H01M4/8807H01M4/8828H01M4/9075H01M8/16H01M2004/8684Y02E60/50Y02P70/50
Inventor 曾丽
Owner CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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