Improving the Energy Efficiency of CO Electrolysis by Controlling Cu Domain Size in Gas Diffusion Electrodes
Improving the Energy Efficiency of CO Electrolysis by Controlling Cu Domain Size in Gas Diffusion Electrodes
复制标题
通过控制气体扩散电极中的铜域尺寸来提高 CO 电解的能量效率
DOI:
10.1021/acsenergylett.2c01978
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发表时间:
2022
影响因子:
22
通讯作者:
Kanan, Matthew W.
中科院分区:
文献类型:
--
作者:
Rabinowitz, Joshua A.;Ripatti, Donald S.;Mariano, Ruperto G.;Kanan, Matthew W.
Carbon monoxide electrolysis is a potential bridge between CO2-to-CO technologies and renewable C2+platform chemicals, but CO reduction (COR) cathode performance must improve to advance these systems. A key challenge is designing COR catalyst layers on gas diffusion electrodes with adequate electron, ion, and gas transport for high current densities. Here we study the effects of Cu domain size and loading in catalyst layers composed of Cu nanoparticles (NPs) and PTFE gas-transporting domains. Using a special ink solvent that stably disperses PTFE, we optimize the PTFE content to create catalyst layers with networks of ∼5 μm wide Cu NP domains. Such layers provide favorable COR transport properties even at very high Cu loadings, which reduces the COR overpotential. In a 24 h electrolysis, an optimized Cu/PTFE electrode achieves a 73.5% single-pass conversion efficiency at 200 mA cm–2and 2.13 V with 76% Faradaic efficiency for COR, including 18% for propanol.
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影响因子:
9.5
作者:
Larrazabal, Gaston O.;Strom-Hansen, Patrick;Seger, Brian
通讯作者:
Seger, Brian
DOI:
10.1073/pnas.2010868118
发表时间:
2020-12
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
Peng Zhu;Chuan Xia;Chun-Yen Liu;Kun Jiang;G. Gao;Xiao Zhang;Yang Xia;Yongjiu Lei;H. Alshareef;T. Senftle;Haotian Wang
通讯作者:
Peng Zhu;Chuan Xia;Chun-Yen Liu;Kun Jiang;G. Gao;Xiao Zhang;Yang Xia;Yongjiu Lei;H. Alshareef;T. Senftle;Haotian Wang
影响因子:
37.8
作者:
Jouny, Matthew;Hutchings, Gregory S.;Jiao, Feng
通讯作者:
Jiao, Feng
影响因子:
32.5
作者:
Tim Möller;Trung Ngo Thanh;Xingli Wang;W. Ju;Zarko P. Jovanov;P. Strasser
通讯作者:
P. Strasser
影响因子:
22
作者:
Sisler, Jared;Khan, Shaihroz;Sargent, Edward H.
通讯作者:
Sargent, Edward H.