化工进展 ›› 2023, Vol. 42 ›› Issue (8): 4043-4057.DOI: 10.16085/j.issn.1000-6613.2023-0397

• 专栏:化学产品工程 • 上一篇    下一篇

铜基催化剂电还原二氧化碳选择性的调控策略

王耀刚1,2,3,4(), 韩子姗1,2,3,4, 高嘉辰1,2,3,4, 王新宇1,2,3,4, 李思琪1,2,3,4, 杨全红1,2,3,4, 翁哲1,2,3,4()   

  1. 1.天津市先进碳与电化学储能重点实验室,天津 300072
    2.国家储能技术产教融合创新平台,天津 300072
    3.物质绿色创造与制造海河实验室,天津 300192
    4.天津化学化工协同创新中心,天津 300072
  • 收稿日期:2023-03-15 修回日期:2023-07-27 出版日期:2023-08-15 发布日期:2023-09-19
  • 通讯作者: 翁哲
  • 作者简介:王耀刚(1996—),男,硕士研究生,研究方向为电催化二氧化碳还原催化剂的设计。E-mail:e158263980@163.com
  • 基金资助:
    国家自然科学基金(51972223);天津市自然科学基金(20JCYBJC01550)

Strategies for regulating product selectivity of copper-based catalysts in electrochemical CO2 reduction

WANG Yaogang1,2,3,4(), HAN Zishan1,2,3,4, GAO Jiachen1,2,3,4, WANG Xinyu1,2,3,4, LI Siqi1,2,3,4, YANG Quanhong1,2,3,4, WENG Zhe1,2,3,4()   

  1. 1.Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, Tianjin 30072, China
    2.National Industry-Education Integration Platform of Energy Storage, Tianjin 300072, China
    3.Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
    4.Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
  • Received:2023-03-15 Revised:2023-07-27 Online:2023-08-15 Published:2023-09-19
  • Contact: WENG Zhe

摘要:

在水系电解液中利用电能直接将CO2还原成基础化学品为CO2资源化利用提供了一种绿色可行的策略。铜是唯一能够高效地将CO2还原成C2+产物的金属催化剂,然而其催化产物多达16种,产物的多样性严重增加了后期产物分离的成本并大幅降低了整个电催化二氧化碳还原(eCO2RR)系统的能量转换效率,是eCO2RR走向工业化生产的一个重要瓶颈,因此对铜基催化剂进行合理的调控,以提高其对单一产物的选择性一直是研究的热点问题。经过30余年的发展,铜基催化剂的研究已经取得了巨大的进展,回溯近期铜基催化剂电催化CO2还原领域的研究历程,本文综述了电催化二氧化碳还原的反应原理、反应路径和针对不同产物的调控策略,着重总结了提高铜基催化剂对单一产物选择性的设计策略和设计方法,最后展望了铜基催化剂面临的挑战和未来的发展方向。

关键词: 电化学, 二氧化碳, 还原, 铜基催化剂, 产物选择性

Abstract:

Directly converting CO2 into valuable chemicals in aqueous electrolytes using renewable electric energy provides a sustainable strategy for the CO2 utilization. Copper is the only metal catalyst that can efficiently produce C2+ products at appreciable rates. However, the diverse distribution of products (more than 16 types) in the electrocatalytic CO2 reduction reaction (eCO2RR) significantly increases the cost of product separation and weakens the energy conversion efficiency of the system, thus hindering the industrialization of eCO2RR. Therefore, it is of great importance to rationally design copper-based catalysts that exhibit high selectivity toward a specific product. During more than 30 years of development, the research on copper-based catalysts has made great progress. This review provided an overview of the reaction mechanisms, reaction paths and regulation strategies of eCO2RR using copper-based catalysts based on recent studies. The regulation strategies for achieving various products were comprehensively summarized. Finally, challenges and future directions for copper-based catalysts were discussed.

Key words: electrochemistry, carbon dioxide, reduction, copper-based catalysts, product selectivity

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