CO <sub>2</sub> electrolysis to multicarbon products in strong acid

Jianan Erick Huang(University of Toronto), Fengwang Li(The University of Sydney), Adnan Ozden(University of Toronto), Armin Sedighian Rasouli(University of Toronto), F. Pelayo Garcı́a de Arquer(University of Toronto), Shijie Liu(University of Toronto), Shuzhen Zhang(The University of Sydney), Mingchuan Luo(University of Toronto), Xue Wang(University of Toronto), Yanwei Lum(University of Toronto), Yi Xu(University of Toronto), Koen Bertens(University of Toronto), Rui Kai Miao(University of Toronto), Cao‐Thang Dinh(University of Toronto), David Sinton(University of Toronto), Edward H. Sargent(University of Toronto)
Science
June 3, 2021
10.1126/science.abg6582
Cited by 1,252Open Access
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Abstract

Potassium helps CO 2 compete in acid Electrochemical reduction of carbon dioxide (CO 2 ) is a promising means of converting this greenhouse gas into valuable fuels and chemicals. However, two competing reactions restrict the efficiency of this process. In base, much of the CO 2 is trapped as carbonate before reduction; in acid, protons outpace CO 2 at catching electrons from the cathode. Huang et al. report that a high dose of potassium ions can help to solve the latter problem. By concentrating potassium ions at the electrode, high selectivity toward CO 2 reduction at high current in acid is possible, which the authors attribute to electrostatic stabilization of the desired adsorbates. Science , abg6582, this issue p. 1074

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