Title:
SURFACE-RECONSTRUCTED COPPER CATALYST, PREPARATION METHOD THEREFOR AND USE THEREOF IN CO2 ELECTROREDUCTION
Document Type and Number:
WIPO Patent Application WO/2024/012312
Kind Code:
A1
Abstract:
The present invention relates to a surface-reconstructed copper catalyst, a preparation method therefor and a use thereof in CO2 electroreduction. According to the copper catalyst, surface reconstruction is performed on copper foil by means of an acidic high-valence metal ion solution, and obtained active sites are regularly arranged gully-like structures and nanoclusters having crystal faces Cu(100), Cu(110), and Cu(111). The preparation method for the copper catalyst comprises: placing cleaned copper foil into a high-valence metal ion solution to which an acid is added and undergoing an oxidation-reduction reaction for surface reconstruction; and cleaning the surface-reconstructed copper foil and drying same to obtain the copper catalyst. The use of the copper catalyst comprises: putting the copper catalyst into a CO2-saturated cathode electrolyte, performing constant-potential electrolysis, and continuously introducing CO2 for electroreduction to obtain hydrocarbon products CH4 and C2H4. The hydrocarbon products of the catalyst of the present invention has good selectivity and a high value, raw materials for preparation are easily obtained, the preparation method is simple, the process has strong controllability, and the cost is low.
Inventors:
LIU CHAO (CN)
LI PEIJUN (CN)
XIAO RUI (CN)
XU WEICONG (CN)
LU XIANJUN (CN)
LI XINYU (CN)
LI TAO (CN)
LI PEIJUN (CN)
XIAO RUI (CN)
XU WEICONG (CN)
LU XIANJUN (CN)
LI XINYU (CN)
LI TAO (CN)
Application Number:
PCT/CN2023/105673
Publication Date:
January 18, 2024
Filing Date:
July 04, 2023
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
C25B3/03; C25B11/046; C25B3/26; C25F3/02
Foreign References:
| CN115110111A | 2022-09-27 | |||
| CN102146565A | 2011-08-10 | |||
| US20220213604A1 | 2022-07-07 | |||
| CN113279013A | 2021-08-20 | |||
| CN111378983A | 2020-07-07 |
Other References:
LING PEIQUAN, LIU YINGHUAN, WANG ZHIQIANG, LI LI, HU JUN, ZHU JUNFA, YAN WENSHENG, JIANG HUIJUN, HOU ZHONGHUAI, SUN YONGFU, XIE YI: "Surface Engineering on Commercial Cu Foil for Steering C 2 H 4 /CH 4 Ratio in CO 2 Electroreduction", NANO LETTERS, AMERICAN CHEMICAL SOCIETY, US, vol. 22, no. 7, 13 April 2022 (2022-04-13), US , pages 2988 - 2994, XP093127319, ISSN: 1530-6984, DOI: 10.1021/acs.nanolett.2c00189
HORI, Y. WAKEBE, H. TSUKAMOTO, T. KOGA, O.: "Adsorption of CO accompanied with simultaneous charge transfer on copper single crystal electrodes related with electrochemical reduction of CO"2 to hydrocarbons", SURFACE SCIENCE, NORTH-HOLLAND, AMSTERDAM, NL, vol. 335, 20 July 1995 (1995-07-20), AMSTERDAM, NL , pages 258 - 263, XP005877754, ISSN: 0039-6028, DOI: 10.1016/0039-6028(95)00441-6
HORI, Y. WAKEBE, H. TSUKAMOTO, T. KOGA, O.: "Adsorption of CO accompanied with simultaneous charge transfer on copper single crystal electrodes related with electrochemical reduction of CO"2 to hydrocarbons", SURFACE SCIENCE, NORTH-HOLLAND, AMSTERDAM, NL, vol. 335, 20 July 1995 (1995-07-20), AMSTERDAM, NL , pages 258 - 263, XP005877754, ISSN: 0039-6028, DOI: 10.1016/0039-6028(95)00441-6
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
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