Preparation method of NiMoCu catalyst with nano-porous surface

A surface porous, nanoporous technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science

Pending Publication Date: 2022-03-29
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing Ni-based materials are limited by the lack of active sites, and there is still room for improvement in HER catalytic performance

Method used

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  • Preparation method of NiMoCu catalyst with nano-porous surface
  • Preparation method of NiMoCu catalyst with nano-porous surface
  • Preparation method of NiMoCu catalyst with nano-porous surface

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Embodiment Construction

[0018] The invention provides a method for preparing a surface nanoporous NiMoCu catalyst, and the specific implementation method is as follows.

[0019] High-purity Ni, Cu, Mo ingots are made into Ni by arc melting technology according to the atomic ratio of 74:20:6 74 Mo 6 Cu 20 master alloy. Ni 74 Mo 6 Cu 20 Master alloy strips, and cut the obtained master alloy strips into 1×0.2cm 2 spare.

[0020] The Ni obtained by ultrasonic cleaning with acetone and ultrapure water 74 Mo 6 Cu 20 The master alloy strip was dried for 20 minutes and connected to the electrochemical workstation as the working electrode in the three-electrode system. At the same time, the same method was used to treat the gold sheet as an auxiliary electrode; the Ag / AgCl electrode was used as a reference electrode, and it was used as an auxiliary electrode at 0.5M H 2 SO 4 electrochemical etching. The etching voltage is 1.25V (vs.Ag / AgCl), and the etching time is 300s. After the etching is com...

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Abstract

The invention provides a preparation method of a surface nano-porous NiMoCu catalyst capable of being applied to water electrolysis hydrogen production, and belongs to the technical field of catalyst material preparation. The preparation method comprises the following steps: firstly, preparing a Ni74Mo6Cu20 master alloy strip by utilizing an electric arc melting technology, and preparing the surface nano-porous NiMoCu catalyst by adopting an electrochemical etching method on the basis of the Ni74Mo6Cu20 master alloy strip. The NiMoCu catalyst prepared by the method shows good HER catalytic activity in an alkaline medium, a spongy nano-porous microstructure is obtained after etching, and the active specific surface area is optimized, so that more active sites are exposed, and the purpose of improving the activity of the catalyst is achieved. Meanwhile, the preparation process is simple, raw materials are rich and cheap, expensive and scarce noble metal-based catalysts can be replaced, and commercial application of hydrogen production through water electrolysis is promoted.

Description

technical field [0001] The invention relates to the technical field of preparation of catalyst materials, and proposes a method for preparing a surface nanoporous NiMoCu catalyst applicable to hydrogen production by electrolysis of water. Background technique [0002] Hydrogen has a high energy density and the only product of combustion is water, so it is considered as a substitute for traditional fossil energy. Water electrolysis hydrogen production technology can use water as raw material to produce hydrogen, which has attracted widespread attention. The water electrolysis reaction consists of the hydrogen evolution reaction (HER) at the cathode and the oxygen evolution reaction (OER) at the anode. Using a catalyst with high catalytic activity as the electrode material can lower the reaction energy barrier and reduce energy loss. Among non-noble metals, Ni has been widely studied as a cathode catalyst due to its good HER activity. A large number of studies have shown tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/031C25B1/04C25B11/04C25B11/046C25F3/02C22C19/03C22C1/02B22D11/06B82Y40/00B82Y30/00
CPCC25B11/031C25B1/04C25B11/04C25B11/046C25F3/02C22C19/03C22C19/002C22C1/023B22D11/001B22D11/0611B82Y40/00B82Y30/00Y02E60/36
Inventor 葛性波晏莎莎梁梓灏兰高力易洪亮李玲张红
Owner SOUTHWEST PETROLEUM UNIV
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