Preparation method of 3D porous electrode and its application in electrochemical hydrogen evolution reaction

A porous electrode, 3D technology, applied in the field of energy storage, can solve the problems of not providing enough space for mass transfer, limited pore structure, high metal consumption, etc., and achieve the effect of small batch difference, short time and high catalytic performance
CN106048650BActive Publication Date: 2018-06-12ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2018-06-12

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Abstract

The invention discloses a 3D porous electrode preparation method and a use of a 3D porous electrode in electrochemical hydrogen evolution and belongs to the field of electrochemistry. The method comprises repeatedly impregnating a commercial carbon cloth with a transition metal salt, putting the commercial carbon cloth with the transition metal salt and a heat-labile nitrogen-containing monomer into a porcelain boat, and carrying out stepwise calcining treatment to obtain the 3D porous electrode comprising carbon tubes growing on the activated carbon cloth. The method has simple processes, less equipment investment and small batch difference and is suitable for large scale production. The 3D porous electrode has well-developed tunnel distribution, a high specific surface area and excellent conductivity. The 3D porous electrode can be used in the water electrolysis oxygen-evolution hydrogen-evolution reaction, can test hydrogen evolution reaction activity at a low temperature and has excellent catalytic performances.
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Description

Technical field

[0001] The invention relates to the field of energy storage, in particular to the design of a 3D porous electrode and its application in the electrochemical hydrogen evolution reaction. Background technique

[0002] The porous electrode is an electrode designed to increase the actual surface area of ​​the electrode and reduce the polarization. It is an electrode structure often used in a variety of batteries (including electrolytic cells and chemical power sources). Generally, the mesh, particles and fine powder of the material are packed into porous electrodes through methods such as filling, crushing, sintering, and forming. According to the characteristics of electrode reaction, it can be divided into liquid / solid two-phase and gas / liquid / solid gas-phase porous electrodes. Porous electrodes are widely used because of their large specific surface area and high electrochemical reaction activity.

[0003] With the increasingly severe environmental problems and the...

Claims

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