Preparation method of CoFe2O4/AC microbial fuel cell air cathode catalytic material

A fuel cell, air cathode technology, applied in biochemical fuel cells, battery electrodes, nanotechnology for materials and surface science, etc., can solve problems such as high cost, achieve cost reduction, simple preparation process, and low synthesis process cost Effect

Active Publication Date: 2017-05-31
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to provide a kind of CoFe 2 o 4 / AC microbial fuel cell air cathode composite catalytic material preparation method, the nanoparticles of the prepared composition are uniformly dispersed, and the catalytic effect is high, which significantly improves the maximum power density of microbial fuel cells, solves the dependence on high-priced platinum carbon catalysts, reduces The problem of high cost of cathode catalyst materials for MFCs

Method used

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  • Preparation method of CoFe2O4/AC microbial fuel cell air cathode catalytic material
  • Preparation method of CoFe2O4/AC microbial fuel cell air cathode catalytic material
  • Preparation method of CoFe2O4/AC microbial fuel cell air cathode catalytic material

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Embodiment 1

[0024] The outstanding features of the present invention will be further elaborated below in conjunction with specific examples.

[0025] a CoFe 2 o 4 / AC microbial fuel cell air cathode composite catalytic material, which consists of: cobalt source (CoCl 2 ·6H 2 O, Sinopharm Chemical Reagent Co., Ltd.), iron source (FeCl 3 ·6H 2 O, Sinopharm Chemical Reagent Co., Ltd.), activated carbon (AC, 2100m 2 g -1 , Fuzhou Yihuan Carbon Co., Ltd.), ethylene glycol (EG, Sinopharm Chemical Reagent Co., Ltd.), ammonia (NH 3 ·H 2 O, Sinopharm Chemical Reagent Co., Ltd.), and the rest were deionized.

[0026] Described iron-cobalt solution and CoFe 2 o 4 In / AC, the molar mass ratio of iron (Fe) to cobalt (Co) is 2:1; in the mixed solution of deionized water (DI) and ethylene glycol (EG), the volume ratio of DI to EG is 2:1; The source of iron is ferric chloride (FeCl 3 ·6H 2 O), the cobalt source is cobalt chloride (CoCl 2 ·6H 2 O).

[0027] a CoFe 2 o 4 The preparation m...

Embodiment 2

[0036] a CoFe 2 o 4 / AC microbial fuel cell air cathode catalytic composite material, which consists of: cobalt source (CoCl 2 ·6H 2 O, Sinopharm Chemical Reagent Co., Ltd.), iron source (FeCl 3 ·6H 2 O, Sinopharm Chemical Reagent Co., Ltd.), activated carbon (AC, 2100m 2 g -1 , Fuzhou Yihuan Carbon Co., Ltd.), ethylene glycol (EG, Sinopharm Chemical Reagent Co., Ltd.), ammonia (NH 3 ·H 2 O, Sinopharm Chemical Reagent Co., Ltd.), and the rest were deionized.

[0037] Described iron-cobalt solution and CoFe 2 o 4 In / AC, the molar mass ratio of iron (Fe) to cobalt (Co) is 2:1; in the mixed solution of deionized water (DI) and ethylene glycol (EG), the volume ratio of DI to EG is 2:1; The source of iron is ferric chloride (FeCl 3 ·6H 2 O), the cobalt source is cobalt chloride (CoCl 2 ·6H 2 O).

[0038] a CoFe 2 o 4 The preparation method of / AC microbial fuel cell air cathode catalytic composite material, its steps are:

[0039] 1. Preparation of iron-cobalt sol...

Embodiment 3

[0044] a CoFe 2 o 4 / AC microbial fuel cell air cathode catalytic composite material, which consists of: cobalt source (CoCl 2 ·6H 2 O, Sinopharm Chemical Reagent Co., Ltd.), iron source (FeCl 3 ·6H 2 O, Sinopharm Chemical Reagent Co., Ltd.), activated carbon (AC, 2100m 2 g -1 , Fuzhou Yihuan Carbon Co., Ltd.), ethylene glycol (EG, Sinopharm Chemical Reagent Co., Ltd.), ammonia (NH 3 ·H 2 O, Sinopharm Chemical Reagent Co., Ltd.), and the rest were deionized.

[0045] Described iron-cobalt solution and CoFe 2 o 4 In / AC, the molar mass ratio of iron (Fe) to cobalt (Co) is 2:1; in the mixed solution of deionized water (DI) and ethylene glycol (EG), the volume ratio of DI to EG is 2:1; The source of iron is ferric chloride (FeCl 3 ·6H 2 O), the cobalt source is cobalt chloride (CoCl 2 ·6H 2 O).

[0046] a CoFe 2 o 4 / AC microbial fuel cell air cathode catalytic composite material preparation method, the steps are:

[0047] 1. Preparation of iron-cobalt solution:...

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Abstract

The invention discloses a preparation method of a CoFe2O4 / AC microbial fuel cell air cathode catalytic material. The preparation method comprises the following steps: A, preparing an iron-cobalt liquid: weighing cobalt chloride and iron chloride, adding a mixed solution of deionized water and ethylene glycol, and stirring to obtain the iron-cobalt solution; B, weighing activated carbon, ultrasonically dispersing in the obtained solution and stirring; C, dropwise adding ammonia water to the obtained solution, sealing the opening of a beaker by a fresh-keeping film, rising temperature and stirring; D, transferring an obtained suspension to a reactor, putting in an electric oven after sealing, and reacting; E, collecting obtained products: taking the reactor out, filtering after cooling to room temperature, cleaning with ethanol and deionized water repeatedly, and placing in the electric oven to be dried overnight; F, placing obtained dried solid materials in a porcelain boat, putting in a tubular furnace, cooling to the room temperature to obtain a nanometer mixture, namely a CoFe2O4 / AC catalyst. The CoFe2O4 / AC microbial fuel cell air cathode catalytic material is simple in process, easy to control process parameters, low in cost, good in dispersion, more in active sites and obvious in catalytic performances.

Description

technical field [0001] The invention belongs to the field of microbial fuel cells and relates to a CoFe 2 o 4 / AC preparation method of microbial fuel cell air cathode composite catalytic material, more specifically related to a kind of in-situ double metal oxide CoFe 2 o 4 A method for preparing a cathode catalytic material for a microbial fuel cell by combining the / AC water-phase heating deposition and high-temperature calcination. The material is widely applicable to fields related to electrocatalysis of oxygen reduction reaction, such as acid and alkaline fuel cells, polymer electrolyte fuel cells and metal-air fuel cells. Background technique [0002] With the rapid development of the economy and the improvement of living standards, the environment, energy and water resources have become major problems that seriously affect people's production and life. Microbial fuel cells (MFCs) use microorganisms to directly degrade organic matter in wastewater or waste, and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M4/90H01M4/96H01M8/16B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/8647H01M4/88H01M4/9016H01M4/96H01M8/16Y02E60/50
Inventor 周培疆黄强盛朱珑珑管鲲
Owner WUHAN UNIV
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