电解到多碳产品的活性大于1 A cm-2
F Pelayo García de Arquer1, Cao-Thang Dinh1, Adnan Ozden2
1Department of Electrical and Computer Engineering, University of Toronto, 35 St. George St., Toronto, Ontario M5S 1A4, Canada.
概括
这项研究引入了一种新型的催化剂:离子体批量异质连接 (CIBH) 架构,以增强二氧化碳 (CO2) 电解. 这种设计通过改善气体和离子运输到催化剂表面,显著提高了二氧化碳的电减效率.
科学领域:
- 电化学
- 材料科学
- 化学工程
背景情况:
- 电解是将二氧化碳 (CO2) 转化为有价值产品的一种有前途的方法.
- 在二氧化碳电解中,由于气体对催化剂表面的扩散效率低下,生产率往往受到阻碍.
- 现有方法在同时优化气体,离子和电子运输方面面临挑战.
研究的目的:
- 开发一个新的二氧化碳电解架构,克服大规模运输的限制.
- 提高二氧化碳转化为乙烯的效率和生产率.
- 为了展示先进的电化学反应器的可扩展设计.
主要方法:
- 一种催化剂:离子体散体异质连接 (CIBH) 架构的开发.
- 包含具有定制的疏水和疏水功能的超细离子层.
- 在高度性电解质 (7M KOH) 中对铜催化剂的二氧化碳减少的电化学特征.
主要成果:
- CIBH架构有效地解了气体,离子和电子运输路径.
- 气体和离子运输从纳米扩展到微米尺度.
- 达到1.3A/cm2的高乙烯部分电流密度.
- 在二氧化碳电还原以乙烯的过程中达到45%的正极能效.
结论:
- CIBH架构代表了二氧化碳电解技术的重大进步.
- 这种设计策略可实现高性能的二氧化碳电化学转化.
- 这些发现为更高效和更有效的温室气体升级过程铺平了道路.
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