格子应变工程提高了CO2的电还原到C2+的产品
Jiapeng Jiao1,2, Xinchen Kang3,4, Jiahao Yang3,4
1Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China.
Angewandte Chemie (International ed. in English)
|July 1, 2024
概括
对铜 (Cu) 催化剂施加网格拉伸应变,可以增强二氧化碳 (CO2) 电还原到有价值的多碳产品. 这种应变工程提高了C2+化合物形成的选择性和效率.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 有效的二氧化碳 (CO2) 到多碳 (C2+) 产品的电还原对于可持续的化学合成至关重要.
- 控制电极表面的中间结合是提高二氧化碳电还原效率的关键.
- 理论研究表明,铜 (Cu) 催化剂中的晶格应变可以优化二氧化碳电还原通路.
研究的目的:
- 为了研究单元Cu催化剂中晶格拉伸应变对二氧化碳电还原到C2+产品的影响.
- 用于制造 Cu 催化剂,具有受控的格子拉伸力,没有额外的组件.
- 为了将催化剂应变与二氧化碳电还原性能相关联.
主要方法:
- 通过电还原具有不同结晶度的CuO前体,制造具有不同网格拉伸强度的Cu催化剂.
- 用于二氧化碳电还原的Cu催化剂的电化学测试.
- 对不同应用潜力的C2+产品的法拉第效率 (FE) 的分析.
主要成果:
- 在Cu催化剂中的拉丝拉伸应变有效地提高了C2+产品的法拉第效率 (FE).
- Cu_TPA催化剂具有较高的网格拉伸应变,在-1.25V与RHE相比,在 -1.25V时实现了90.9%的FE_C2+ .
- 使用Cu_TPA催化剂观察到C2+产品的高部分电流密度为486.1mA cm−2.
结论:
- 网格拉伸应变是改善Cu催化剂对二氧化碳电还原到C2+化合物的选择性的一个关键因素.
- 应变工程为开发用于二氧化碳转换的高性能电催化剂提供了一个可行的策略.
- 开发的单元Cu催化剂显示了可用于CO2利用的工业应用的巨大潜力.
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