Method for preparing high-efficiency long-life porous nickel-molybdenum alloy for hydrogen production by water electrolysis

A molybdenum alloy and porous nickel technology, applied in the field of high-efficiency and long-life porous nickel-molybdenum alloy preparation, can solve the problems of few active sites, small electrode specific surface area, poor stability, etc., and achieve a small Tafel slope value and a large hydrogen evolution current. The effect of excellent density and electrical conductivity
CN110219016AInactive Publication Date: 2019-09-10NANCHANG HANGKONG UNIVERSITY
1 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANCHANG HANGKONG UNIVERSITY
Publication Date
2019-09-10
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for preparing a high-efficiency long-life porous nickel-molybdenum alloy for hydrogen production by water electrolysis. The method adopts a powder metallurgy atmosphere sintering method, Mg powder is used as a pore-forming agent, ultra-fine Ni, Mo powder and Mg powder with different content ratios are subjected to ball milling and then press forming, and the porousnickel-molybdenum alloy is prepared by sintering in a high temperature atmosphere. The porous nickel-molybdenum alloy has the advantages of three-dimensional open-cell structure, high permeability, and large specific surface area, and multi-component composite hydroxide active sites with high catalytic performance can be formed on the surface of the alloy in a long-term hydrogen evolution processin an alkaline solution, so that the alloy is suitable for hydrogen evolution electrodes for hydrogen production by water electrolysis.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a preparation method of a high-efficiency and long-life porous nickel-molybdenum alloy for hydrogen production by water electrolysis, and specifically belongs to the technical field of porous nickel-molybdenum alloy materials. Background technique

[0002] Noble metals (Pt) have been widely used in electrolysis of water to produce hydrogen due to their high electrochemical activity due to their peak potential close to zero millivolts in the hydrogen evolution reaction. However, from the perspective of cost savings, these noble metals Elements are expensive and have limited reserves on the earth, making it impossible to achieve sustainable development. The development of inexpensive catalysts with excellent performance has become a research hotspot in recent years. In recent years, people have extensively studied the performance of cheap and easy-to-obtain hydrogen evolution catalysts such as alloys of transition metals, sulfide...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More