Boosting CO2 Electroreduction via Construction of a Stable ZnS/ZnO Interface

Yanpeng Song; Yi Wang; Jiaqi Shao; Ke Ye; Qi Wang; Guoxiong Wang

doi:10.1021/acsami.1c15669

Boosting CO₂ Electroreduction via Construction of a Stable ZnS/ZnO Interface

ACS Appl Mater Interfaces. 2022 May 11;14(18):20368-20374. doi: 10.1021/acsami.1c15669. Epub 2021 Oct 12.

Authors

Yanpeng Song^{1

2}, Yi Wang^{2

3}, Jiaqi Shao^{2

3}, Ke Ye¹, Qi Wang⁴, Guoxiong Wang²

Affiliations

¹ Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
² State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
³ College of Energy, University of Chinese Academy of Sciences, Beijing 100039, China.
⁴ Liaoning Key Materials Laboratory for Railway, School of Materials and Engineering, Dalian Jiaotong University, Dalian 116028, China.

PMID: 34636530
DOI: 10.1021/acsami.1c15669

Abstract

Carbon dioxide (CO₂) electroreduction can offer a way of relieving environmental and energy issues. Gold and silver catalysts show considerable electrochemical performance for CO production; however, the electrochemical CO₂ conversion to CO is still restricted by the Faradaic efficiency, current density, and stability over the catalysts. Non-noble metal (zinc) is considered as a promising catalyst for CO₂ electroreduction because of its low cost. However, because of the electron-rich property of zinc, it has a weak adsorption capacity of intermediates, resulting in a poor CO₂ electroreduction performance. In this work, ZnS nanoparticles are embedded onto the ZnO surface to construct a stable ZnS/ZnO interface structure. The ZnS/ZnO interface reaches a maximum current density of 327.2 ± 10.6 mA cm^-2 with a CO Faradaic efficiency of 91.9 ± 0.6% at -0.73 V vs a reversible hydrogen electrode (RHE) and remains stable for 40 h at a current density of 115.7 ± 7.0 mA cm^-2 with a CO Faradaic efficiency of 93.8 ± 3.7% at -0.56 V vs RHE.

Keywords: carbon dioxide electroreduction; electrochemical performance; interface structure; zinc oxide; zinc sulfide.

Publication types

Review