Title:
NICKEL-BASED ALLOY COMPOSITE ELECTRODE HAVING GRADIENT COMPONENT STRUCTURE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/021403
Kind Code:
A1
Abstract:
The present invention relates to a nickel-based alloy composite electrode having a gradient component structure, and a preparation method therefor and a use thereof. The method comprises: placing a nickel matrix in a weak acid solution for pretreatment to remove surface impurities; placing the nickel matrix in a nickel-based alloy catalyst precursor aqueous solution, depositing a nickel-based alloy catalyst under an electrochemical condition, and by continuously regulating the catalyst precursor component concentration, forming a nickel-based alloy catalytic layer having a gradient component structure; placing a composite electrode loaded with the catalyst in an ammonium solution for selective electrochemical etching; and then, performing calcining to finally prepare a nickel-based alloy composite electrode having a gradient component structure. Compared with the prior art, the present invention realizes in-situ growth of the catalyst on the surface of the matrix, enhances the binding force of the catalytic layer and the matrix, and improves the stability of the electrode. Moreover, by means of a selective electrochemical etching method based on an ammonium solution, the specific surface area of the catalytic layer is effectively increased, and the catalytic activity of the composite electrode is improved.
Inventors:
GENG ZHEN (CN)
ZHANG CUNMAN (CN)
JIN LIMING (CN)
LV HONG (CN)
ZHANG CUNMAN (CN)
JIN LIMING (CN)
LV HONG (CN)
Application Number:
PCT/CN2022/134839
Publication Date:
February 01, 2024
Filing Date:
November 29, 2022
Export Citation:
Assignee:
UNIV TONGJI (CN)
International Classes:
C25B11/089; C25B1/04; C25B11/031; C25B11/052; C25B11/061; C25D3/56; C25D5/40; C25D5/48; C25F3/02
Domestic Patent References:
| WO2019161279A1 | 2019-08-22 |
Foreign References:
| CN115216799A | 2022-10-21 | |||
| CN102719846A | 2012-10-10 | |||
| CN114318393A | 2022-04-12 | |||
| US20210123152A1 | 2021-04-29 |
Other References:
QIN FAN, ZHAO ZHENHUAN, ALAM MD KAMRUL, NI YIZHOU, ROBLES-HERNANDEZ FRANCISCO, YU LUO, CHEN SHUO, REN ZHIFENG, WANG ZHIMING, BAO J: "Trimetallic NiFeMo for Overall Electrochemical Water Splitting with a Low Cell Voltage", ACS ENERGY LETTERS, ACS, AMERICAN CHEMICAL SOCIETY, vol. 3, no. 3, 9 March 2018 (2018-03-09), American Chemical Society, pages 546 - 554, XP093133535, ISSN: 2380-8195, DOI: 10.1021/acsenergylett.7b01335
Attorney, Agent or Firm:
SHANGHAI KESHENG INTELLECTUAL PROPERTY AGENCY LTD. (CN)
Download PDF: