Nitrogen-sulfur-iron triple-doped carbon black catalyst and preparation method and application thereof

A three-doping, catalyst technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of expensive oxygen reduction catalysts, poor selectivity and stability, and low catalytic activity, achieving good selectivity and stability, The effect of cost reduction

Inactive Publication Date: 2017-03-22
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a nitrogen-sulfur-iron-tridoped carbon black catalyst and its preparation method and application, which solves the problems of expensive oxygen reduction catalysts, low catalytic activity, poor selectivity and stability in the past. To prepare for the scale-up and practical application of air cathode microbial fuel cells in the future

Method used

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  • Nitrogen-sulfur-iron triple-doped carbon black catalyst and preparation method and application thereof
  • Nitrogen-sulfur-iron triple-doped carbon black catalyst and preparation method and application thereof
  • Nitrogen-sulfur-iron triple-doped carbon black catalyst and preparation method and application thereof

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Embodiment 1

[0040] Embodiment 1: the FeCl of 0.27g 3 ·6H 2 Dissolve O completely in 2ml of distilled water, add 0.1g of carbon black, mix evenly, place in a blast electric drying oven, and dry at 40°C; transfer the dried powder to an agate mortar, and add 1g of thiourea , ground for 2 h; the ground powder was transferred to an ash dish, and calcined at 500° C. for 1 h under the protection of argon to obtain the target catalyst.

Embodiment 2

[0041] Embodiment 2: the FeCl of 0.27g 3 ·6H 2 Dissolve O completely in 2ml of distilled water, add 0.1g of carbon black, mix evenly, place in a blast electric drying oven, and dry at 60°C; transfer the dried powder to an agate mortar, and add 1g of thiourea , ground for 2 h; the ground powder was transferred to an ash dish, and calcined at 700° C. for 1 h under the protection of argon to obtain the target catalyst.

Embodiment 3

[0042] Embodiment 3: the FeCl of 0.27g 3 ·6H 2 Dissolve O completely in 2ml of distilled water, add 0.1g of carbon black, mix evenly, place in a blast electric drying oven, and dry at 50°C; transfer the dried powder to an agate mortar, and add 1g of thiourea , ground for 2 h; the ground powder was transferred to an ash dish, and calcined at 900° C. for 1 h under the protection of argon to obtain the target catalyst.

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Abstract

The invention discloses a nitrogen-sulfur-iron triple-doped carbon black catalyst and a preparation method and an application thereof. Nitrogen, sulfur and iron are jointly used for doping amorphous carbon black through high-temperature baking to form microsphere granules with Fe-N, Fe-S, Fe-C, C-S and C-N chemical bond coexistence, namely the nitrogen-sulfur-iron triple-doped carbon black catalyst. According to the nitrogen-sulfur-iron triple-doped carbon black microbial fuel cell cathode catalyst material prepared by the invention, the low-cost carbon black is used as the carbon source; the obtained composite material has high oxygen reduction catalysis activity, and high selectivity and stability; when the nitrogen-sulfur-iron triple-doped carbon black prepared by the invention is used as the air cathode microbial fuel cell cathode ORR catalyst, the maximum output power which is equivalent to that of 20wt% Pt / C is obtained; and when the nitrogen-sulfur-iron triple-doped carbon black is applied to the cathode, the unit area cost of an ACMFC cathode is reduced by 78.1%, so that a new choice is supplied for the air cathode microbial fuel cell cathode catalyst.

Description

technical field [0001] The invention belongs to the field of energy materials and electrochemistry, and in particular relates to a nitrogen-sulfur-iron-tridoped carbon black catalyst and a preparation method and application thereof. Background technique [0002] Microbial fuel cell (MFC) is an electrochemical device that uses the catalysis of microorganisms to convert the chemical energy of organic matter in sewage into electrical energy. In MFC, microorganisms attached to the surface of the anode have the ability to directly transfer electrons outside the cell, which can catalyze the decomposition of organic organisms and release electrons and protons during their own metabolism. The electrons are transferred to the cathode through the external circuit, and the protons diffuse from the anode to the cathode through the solution. , the cathode oxidant obtains electrons to form a battery circuit; the air-cathode microbial fuel cell (ACMFC) is a battery configuration in which t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/88
CPCH01M4/8825H01M4/9091Y02E60/50
Inventor 史昕欣张娇娜黄廷林
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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