Air cathode of microbial fuel cell and preparation method of air cathode

A fuel cell and air cathode technology, applied in biochemical fuel cells, fuel cell parts, fuel cells, etc., can solve the problems of complicated manufacturing process and high cost of air cathode, and achieve the effect of low price

Active Publication Date: 2014-10-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an air cathode for a microbial fuel cell and a preparation method thereof in order to solve the problems of high cost and complex manufacturing process of the air cathode in the existing microbial fuel cell

Method used

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  • Air cathode of microbial fuel cell and preparation method of air cathode

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specific Embodiment approach 1

[0014] Embodiment 1: The air cathode of the microbial fuel cell in this embodiment is composed of a liquid catalyst, a waterproof breathable membrane and a stainless steel mesh. The liquid catalyst is applied on the waterproof breathable membrane, and the stainless steel mesh is stacked on the side of the waterproof breathable membrane loaded with the liquid catalyst. , wherein the liquid catalyst is made by mixing catalyst, isopropanol, Nafion and deionized water, and the catalyst is a platinum carbon catalyst with a platinum mass content of 10% to 20%, carbon powder, tetramethoxyphenyl porphyrin cobalt or manganese dioxide.

[0015] The preparation cost of the air cathode of the microbial fuel cell described in this embodiment is low relative to the traditional air cathode, and the existing air cathode generally includes a carbon black / polytetrafluoroethylene layer (1 layer), a polytetrafluoroethylene air diffusion layer (3~4 layers) and catalyst layer, and the base material...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that the thickness of the waterproof and gas-permeable membrane is 0.05-0.15 mm.

specific Embodiment approach 3

[0017] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the water vapor transmission rate of the waterproof breathable membrane is 1000~2500g / (m 2 ·24h), the impermeability is 1500~3000mm.

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Abstract

The invention provides an air cathode of a microbial fuel cell and a preparation method of the air cathode, relates to an air cathode of a single-chamber air cathode microbial fuel cell and a preparation method of the single-chamber air cathode microbial fuel cell, and aims at solving the problems that the air cathode in an existing microbial fuel cell is high in manufacturing cost and complicated in manufacturing technology. The air cathode comprises a liquid catalyst, a waterproof and breathable film and a stainless steel net, wherein the liquid catalyst coats the waterproof and breathable film; the stainless steel net is arranged on the side, loaded with the liquid catalyst is loaded, of the waterproof and breathable film in a stacking manner. The preparation method comprises the steps of 1, mixing a catalyst, isopropanol, Nafion and deionized water to prepare the liquid catalyst; 2, coating the waterproof and breathable film with the liquid catalyst; and 3, stacking the stainless steel net on the side, loaded with the liquid catalyst, of the waterproof and breathable film. The air cathode of the microbial fuel cell is low in manufacturing cost, simple in manufacturing technology, and short in consumed time, and the expanded production of the air cathode can be facilitated.

Description

technical field [0001] The invention relates to an air cathode of a single-chamber air cathode microbial fuel cell and a preparation method thereof. Background technique [0002] The energy crisis and the aggravation of environmental pollution force people to look for a renewable and sustainable new clean energy; and resource-based alternative technologies. Microbial fuel cell is a new type of wastewater treatment technology that can realize efficient wastewater treatment through the action of microorganisms, and at the same time realize the conversion of chemical energy in wastewater into clean biomass electrical energy, but it is also a new technology with both challenges and opportunities. The current technology The bottleneck problem mainly lies in how to further reduce the cost of the cathode and how to reasonably realize the expansion of the reactor. These two points are the key to the successful industrialization and commercialization of this technology in the future...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M8/02H01M4/88
CPCY02E60/50H01M4/8605H01M4/8807H01M4/8828H01M8/0232H01M8/16Y02P70/50
Inventor 邢德峰唐宇庄汇川王睿文谢冰涵
Owner HARBIN INST OF TECH
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