Magnetic Field-Enhanced Acidic CO2 Electroreduction Reaction on Single Nickel-Site Catalysts

IF 15.6 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Journal of the American Chemical Society Pub Date : 2025-04-02 DOI:10.1021/jacs.5c00858

Jia Song, Dayin He, Xianhui Ma, Peigen Liu, Wenxin Guo, Rongbo Sun, Feng Li, Zhicheng Zhong, Huang Zhou, Jun Tang, Jie Xu, Tongwei Wu, Lin Hu, Yuen Wu

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Abstract

The synergistic integration of electrochemical reactions with an external magnetic field offers a powerful strategy for enhancing reaction performance. Herein, we introduce a flexible and continuously adjustable external magnetic field to enhance acidic CO₂ reduction reaction (CO₂RR) performance. In an acidic electrolyte (pH = 0.91), the initial Faradaic efficiency (FE) of the CO₂RR for CO is only 18%, which can be increased to 63.2% when a 2 T magnetic field is applied. More importantly, the introduction of this external magnetic field enables the continuous switching of CO₂ reduction products in a noncontact magnetic switching mode. Theoretical calculations demonstrate that the application of a magnetic field promotes CO₂ adsorption at Ni sites and inhibits the hydrogen evolution reaction (HER), ultimately enhancing CO₂RR activity and selectivity. This work provides fresh insight into how an external magnetic field promotes CO₂RR performance.

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磁场增强单镍位催化剂的酸性CO2电还原反应

电化学反应与外部磁场的协同集成为提高反应性能提供了强有力的策略。在此，我们引入了一个灵活的、连续可调的外磁场来提高酸性CO2还原反应（CO2RR）的性能。在酸性电解液（pH = 0.91）中，CO2RR对CO的初始法拉第效率（FE）仅为18%，当施加2 T磁场时，FE可提高到63.2%。更重要的是，这个外磁场的引入使得CO2还原产物可以在非接触的磁开关模式下连续切换。理论计算表明，施加磁场可促进Ni位点的CO2吸附，抑制析氢反应（HER），最终提高CO2RR活性和选择性。这项工作为外磁场如何促进CO2RR性能提供了新的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the American Chemical Society 化学-化学综合

CiteScore

24.40

自引率

6.00%

发文量

2398

审稿时长

1.6 months

期刊介绍： The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.

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