Electrocatalyst and preparation method thereof

An electrocatalyst and thin film technology, applied in the field of electrocatalyst and its preparation, can solve the problems of inability to meet industrial production requirements, low electrocatalyst activity, low production efficiency, etc., and achieve industrialized large-scale production, stable performance, and adjustable composition. Effect

Active Publication Date: 2018-01-19
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an electrocatalyst and a preparation method thereof, aiming at solving the problem of low electrocatalyst activity, low production efficiency, complex process, high price, and inability to meet the requirements of industrial production in the prior art. The problem

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  • Electrocatalyst and preparation method thereof
  • Electrocatalyst and preparation method thereof
  • Electrocatalyst and preparation method thereof

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Embodiment 1

[0054] 1. Combine figure 1 Shown, this embodiment Fe 0.54 co 0.46 S 0.92 / CNTs / CC electrode preparation steps are as follows:

[0055] The carbon cloth was soaked in 0.1M Ni(NO 3 ) 2 Put the dry carbon cloth in the middle of the tube furnace, put 5mL of the mixed solution of ethanol and isopropanol with a volume ratio of 5:1 on the upstream of the tube, pass nitrogen for 20min, and then 20min The temperature was raised to 800°C and maintained for 10 minutes; after the end, it was cooled to room temperature to obtain CNTs / CC.

[0056] Put the CNTs / CC substrate into the ALD chamber, set the PE-ALD program, feed high-purity nitrogen, and control the deposition at 250 °C. Heat bis(N,N'-diisopropylacetamidino)cobalt to 75°C, and then mix the heated bis(N,N'-diisopropylacetamidino)cobalt with H 2 S is introduced into the ALD cavity to control bis(N,N'-diisopropylacetamido) cobalt and H 2 The exposure pressure of S is 0.4Torrs and 0.062Torrs respectively, and CoS is deposited ...

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Abstract

The invention discloses an electrocatalyst and a preparation method thereof. The preparation method of the electrocatalyst comprises the steps as follows: a new substrate is formed by growing a nanostructure on a substrate with a CVD method; a FeSy film is deposited on the new substrate with an atomic layer deposition technology, and the FeSy film is obtained through deposition of one or more circular FeSy; a CoSy film is deposited on the FeSy film, and the CoSy film is obtained through deposition of one or more circular CoSy, the FeSy film and the CoSy film are deposited alternately multipletimes, and a FexCo(1-x)Sy film is prepared, wherein x ranges from 0 to 1 while y ranges from 0 to 2. The prepared electrocatalyst has the characteristics of component adjustability, high electrocatalytic activity and stable performance; besides, the process of the preparation method is simple and industrial mass production can be realized.

Description

technical field [0001] The invention relates to the field of electrocatalysts, in particular to an electrocatalyst and a preparation method thereof. Background technique [0002] With the increasingly serious problems of fossil energy consumption and environmental pollution, the development of clean energy is an important way to deal with this crisis. Among them, the production of green fuel hydrogen by electrolysis of water has become a research hotspot. Since most electrochemical reactions suffer from kinetic barriers and require effective catalysts to promote the reactions, the development of low-cost and efficient electrocatalysts is a technical difficulty and bottleneck for many electrochemical energy conversion and storage. [0003] The electrolysis of water includes two half-cell reactions: the hydrogen evolution reaction at the cathode and the oxygen evolution reaction at the anode. Both reactions proceed very slowly and require a catalyst. Traditional catalysts ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043B01J37/02B01J35/06C25B1/04C25B11/06
CPCY02E60/36
Inventor 王新炜熊威
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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