定制二维分层双氧化物之间的层间微环境,用于CO2降低与增强的C2+生产
Tong Wu1, Zihao Wu2, Ziqian Shi3
1China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai, 201306, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|October 24, 2024
概括
调整基于铜的分层双氧化物的催化剂层微环境可以提高二氧化碳还原反应 (CO2RR) 的效率. 这种方法优化了表面特性和微观结构,用于选择性的多碳产品生成.
科学领域:
- 电触媒溶解是一种电触媒.
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 气体扩散电极 (GDE) 上的催化剂特性和催化剂层 (CL) 结构对于二氧化碳还原反应 (CO2RR) 的效率和选择性至关重要.
- 恶劣的CO2RR条件导致不可控制的催化剂变化,阻碍了针对所需产品量身定制的表面特性和微观结构.
研究的目的:
- 通过墨水溶剂工程,合理调整基于铜的分层双氧化物 (LDH) 的间层微环境.
- 为了研究调节微环境对CL表面特征和微观结构对CO2RR的影响.
- 增强多碳产品的催化活性和产品选择性.
主要方法:
- 墨水溶剂工程调整基于铜的LDHs的介层微环境.
- 在气体扩散电极 (GDE) 上制造催化剂层 (CL).
- 利用现场和现场技术来分析CL特性和催化性能.
主要成果:
- 实现了优化的表面可湿性和多孔CL的厚度.
- 这些优化的CL控制了局部CO2度和水解离,这对化至关重要.
- 在C2+产品中达到75.3%的Faradaic高效率,在0.8V与RHE相比,在-275mA cm-2的部分电流密度.
结论:
- 基于铜的LDH的墨水溶剂工程提供了一个简单的方法来调整CL微环境.
- 表面湿透性和CLs的厚度对于高效的CO2RR和多碳产品生成至关重要.
- 这项工作为设计高效的CO2RR电催化剂提供了见解,重点是多碳产品.
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