Robust and efficient electroreduction of CO2 to CO in a modified zero-gap electrochemical cell

被引：0

作者：

Zhong, Siyu ^{[1
]}

Sui, Pengfei ^{[2
]}

Holtappels, Peter ^{[1
]}

Navarrete, Alexander ^{[1
]}

Li, Fengwang ^{[3
,4
]}

Dittmeyer, Roland ^{[1
]}

机构：

[1] Karlsruhe Inst Technol KIT, Inst Micro Proc Engn IMVT, Hermann Von Helmholtz-Pl 1, D-76344 Eggenstein leopoldshafen, Germany

[2] Univ Alberta, Dept Chem & Mat Engn, 9211 116 St NW, Edmonton, AB T6G 1H9, Canada

[3] Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW, Australia

[4] Univ Sydney, ARC Ctr Excellence Green Electrochem Transformat C, Sydney, NSW, Australia

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2025年 / 244卷

关键词：

CO; 2; RR; Zero-gap electrolyzer; Energy efficiency; Faradaic efficiency; Operation stability; DIFFUSION ELECTRODES; REDUCTION; ELECTROLYSIS;

D O I：

10.1016/j.cej.2025.161119

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Excellent energy efficiency and system stability are critical factors guiding the practical application of carbon dioxide reduction reaction (CO2RR) systems. This work promotes reduction reaction kinetics in a modified zerogap electrolyzer by regulating the operation temperature and pressure. The energy efficiency of the CO2RR system is enhanced, such as 52.6 % at a current of 1.2 A under alkaline conditions and 49.4 % under neutral conditions, with the characteristics of low voltage and high Faradaic efficiency. In addition, the optimization of the reaction microenvironment effectively alleviates the precipitation issue, enabling the system to operate stably for more than 100 h, with a Faradaic efficiency of more than 90 % for CO generation. Engineering-integrated electrochemistry inspires the future development of CO2RR technology.

引用

页数：9

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