Zinc Hollow-Fiber Penetration Electrode Promotes Ampere-Level CO2 Electroreduction for Viable Applications

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2025-02-25 DOI:10.1021/acscatal.4c07490

Xiaohu Liu, Shoujie Li, Aohui Chen, Xiao Dong, Jianing Mao, Chang Zhu, Gangfeng Wu, Yiheng Wei, Jiayu Xia, Huanyi Zhu, Xiaotong Wang, Ziran Xu, Guihua Li, Yanfang Song, Wei Wei, Wei Chen

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引用次数: 0

Abstract

CO₂ conversion into value-added chemicals via the electrochemical CO₂ reduction reaction (eCO₂RR) offers substantial environmental and economic benefits. Among all eCO₂RR products, CO shows vital significance due to its extensive application in chemical industrial synthesis, yet its production via eCO₂RR is hindered by the requirements of noble metal catalysts. Zinc-based catalysts are potential cost-effective alternatives while still confronting the inadequacy of eCO₂RR activity and CO selectivity. This study introduces an architecturally optimized zinc hollow-fiber penetration electrode (Zn HPE) that achieves a CO Faradaic efficiency exceeding 90% while sustaining stable operation for 110 h at 800 mA cm^–2. In situ X-ray absorption analysis along with operando Raman spectroscopy confirms the maintenance of metallic Zn⁰ during eCO₂RR. Transmission Fourier transform infrared spectroscopy confirmed that the superior performance of Zn HPE is attributed to its unique penetration effect, ensuring the local enrichment and rapid replenishment of CO₂ at the surface active sites. Besides, the effect of local CO₂ enrichment with high coverage on lowering the energy barrier for forming the *COOH intermediate and subsequent CO₂-to-CO conversion enhancement was also elucidated via density functional theory calculations. The techno-economic analysis further suggests the prominent cost advantage of Zn HPE. This work presents a promising approach for designing efficient CO₂ electroreduction electrodes for viable applications.

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.