Title:
PREPARATION METHOD FOR ONE-DIMENSIONAL NI12P5/NI2P POLYCRYSTALLINE HETEROSTRUCTURE CATALYST USED FOR EFFICIENT WATER OXIDATION
Document Type and Number:
WIPO Patent Application WO/2024/002126
Kind Code:
A1
Abstract:
Disclosed in the present invention is a preparation method for a one-dimensional Ni12P5/Ni2P polycrystalline heterostructure catalyst used for efficient water oxidation, wherein foamed nickel is used as a conductive carrier and a nickel source, sodium phosphite is used as a phosphorus source, and the one-dimensional polycrystalline heterostructure catalyst Ni12P5/Ni2P/NF is synthesized therefrom by means of a two-step hydrothermal-phosphorization method. A polycrystalline heterostructure and an interface effectively solve the problems of a transition metal phosphide (TMP) catalyst having a large overpotential and a poor internal charge transfer, a catalyst being unstable and prone to peeling off, etc.; and the close combination of the one-dimensional heterostructure and the foamed nickel conductive carrier is beneficial for charge transfer and the release of bubbles on the surface of an electrode/electrolyte. The prepared Ni12P5/Ni2P/NF catalyst has a relatively low electrocatalytic water oxidation overpotential and long-term stability in an alkaline solution. After the Ni12P5/Ni2P/NF is loaded with monatomic Ir, the water oxidation overpotential can be further reduced, and same has wide application prospects.
Inventors:
ZHANG FUXIANG (CN)
MEHMOOD RASHID (CN)
GUO XIANGYANG (CN)
FAN WENJUN (CN)
MEHMOOD RASHID (CN)
GUO XIANGYANG (CN)
FAN WENJUN (CN)
Application Number:
PCT/CN2023/103043
Publication Date:
January 04, 2024
Filing Date:
June 28, 2023
Export Citation:
Assignee:
DALIAN INST CHEM & PHYSICS CAS (CN)
International Classes:
C25B11/091; C25B1/04; C25B11/031; C25B11/061
Foreign References:
| CN115261917A | 2022-11-01 | |||
| CN110639566A | 2020-01-03 | |||
| CN114164448A | 2022-03-11 | |||
| CN111575729A | 2020-08-25 | |||
| CN111701607A | 2020-09-25 | |||
| CN110586148A | 2019-12-20 | |||
| CN108722437A | 2018-11-02 |
Other References:
XING JIALE, ZOU ZEHUA, GUO KAILU, XU CAILING: "The effect of phosphating time on the electrocatalytic activity of nickel phosphide nanorod arrays grown on Ni foam", JOURNAL OF MATERIALS RESEARCH, MATERIALS RESEARCH SOCIETY, WARRENDALE, PA, US, vol. 33, no. 5, 14 March 2018 (2018-03-14), US , pages 556 - 567, XP093122080, ISSN: 0884-2914, DOI: 10.1557/jmr.2017.399
Attorney, Agent or Firm:
DALIAN EAST PATENT AGENT LTD (CN)
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