Identifying an Interfacial Stabilizer for Regeneration-Free 300 h Electrochemical CO2 Reduction to C2 Products,Journal of the American Chemical Society

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Identifying an Interfacial Stabilizer for Regeneration-Free 300 h Electrochemical CO2 Reduction to C2 Products
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2022-12-01 , DOI: 10.1021/jacs.2c11109
Xinyu Wang _{1,

2} , Yawen Jiang ₁ , Keke Mao ₃ , Wanbing Gong ₁ , Delong Duan ₁ , Jun Ma ₁ , Yuan Zhong ₁ , Jiawei Li ₁ , Hengjie Liu ₁ , Ran Long ₁ , Yujie Xiong _{1,

2}

Affiliation

The electrochemical CO₂ reduction reaction (CO₂RR) to produce high value-added hydrocarbons and oxygenates presents a sustainable and compelling approach toward a carbon-neutral society. However, uncontrollable migration of active sites during the electrochemical CO₂RR limits its catalytic ability to simultaneously achieve high C₂ selectivity and ultradurability. Here, we demonstrate that the generated interfacial CuAlO₂ species can efficiently stabilize the highly active sites over the Cu–CuAlO₂–Al₂O₃ catalyst under harsh electrochemical conditions without active sites regeneration for a long-term test. We show that this unique Cu–CuAlO₂–Al₂O₃ catalyst exhibits ultradurable electrochemical CO₂RR performance with an 85% C₂ Faradaic efficiency for a 300 h test. Such a simple interfacial engineering design approach unveiled in this work would be adaptable to develop various ultradurable catalysts for industrial-scale electrochemical CO₂RR.

中文翻译：

确定用于无再生 300 小时电化学 CO2 还原为 C2 产品的界面稳定剂

用于生产高附加值碳氢化合物和含氧化合物的电化学 CO ₂还原反应 (CO _{2 RR) 为实现碳中和社会提供了一种可持续且引人注目的方法。}_{然而，电化学CO 2} RR过程中活性位点的不可控迁移限制了其同时实现高C ₂选择性和超耐久性的催化能力。在这里，我们证明生成的界面 CuAlO ₂物种可以有效地稳定 Cu–CuAlO ₂ –Al ₂ O _{3上的高活性位点}催化剂在苛刻的电化学条件下没有活性位点再生进行长期测试。我们表明，这种独特的 Cu–CuAlO ₂ –Al ₂ O ₃催化剂在 300 小时的测试中表现出超耐用的电化学 CO ₂ RR 性能和 85% C ₂法拉第效率。在这项工作中揭示的这种简单的界面工程设计方法将适用于开发用于工业规模电化学 CO ₂ RR 的各种超耐用催化剂。

更新日期：2022-12-01

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