Hierarchical micro/nanostructured silver hollow fiber boosts electroreduction of carbon dioxide

Shoujie Li; Wei Chen; Xiao Dong; Chang Zhu; Aohui Chen; Yanfang Song; Guihua Li; Wei Wei; Yuhan Sun

doi:10.1038/s41467-022-30733-6

Hierarchical micro/nanostructured silver hollow fiber boosts electroreduction of carbon dioxide

Nat Commun. 2022 Jun 2;13(1):3080. doi: 10.1038/s41467-022-30733-6.

Authors

Shoujie Li^{1

2

3}, Wei Chen^{4

5}, Xiao Dong¹, Chang Zhu^{1

2}, Aohui Chen^{1

2

3}, Yanfang Song^{1

2}, Guihua Li^{1

2}, Wei Wei^{6

7

8}, Yuhan Sun^{9

10

11}

Affiliations

¹ Low-Carbon Conversion Science and Engineering Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, PR China.
² University of Chinese Academy of Sciences, Beijing, 100049, PR China.
³ School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201203, PR China.
⁴ Low-Carbon Conversion Science and Engineering Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, PR China. chenw@sari.ac.cn.
⁵ University of Chinese Academy of Sciences, Beijing, 100049, PR China. chenw@sari.ac.cn.
⁶ Low-Carbon Conversion Science and Engineering Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, PR China. weiwei@sari.ac.cn.
⁷ University of Chinese Academy of Sciences, Beijing, 100049, PR China. weiwei@sari.ac.cn.
⁸ School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201203, PR China. weiwei@sari.ac.cn.
⁹ Low-Carbon Conversion Science and Engineering Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, PR China. sunyh@sari.ac.cn.
¹⁰ University of Chinese Academy of Sciences, Beijing, 100049, PR China. sunyh@sari.ac.cn.
¹¹ School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201203, PR China. sunyh@sari.ac.cn.

Abstract

Efficient conversion of CO₂ to commodity chemicals by sustainable way is of great significance for achieving carbon neutrality. Although considerable progress has been made in CO₂ utilization, highly efficient CO₂ conversion with high space velocity under mild conditions remains a challenge. Here, we report a hierarchical micro/nanostructured silver hollow fiber electrode that reduces CO₂ to CO with a faradaic efficiency of 93% and a current density of 1.26 A · cm^-2 at a potential of -0.83 V vs. RHE. Exceeding 50% conversions of as high as 31,000 mL · g_cat^-1 · h^-1 CO₂ are achieved at ambient temperature and pressure. Electrochemical results and time-resolved operando Raman spectra demonstrate that enhanced three-phase interface reactions and oriented mass transfers synergistically boost CO production.

Abstract

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