In-situ electrochemical transformation of F-modified metallic bismuth for highly-efficient CO2 electroreduction and Zn-CO2 battery

被引：7

作者：

Wu, Wenbo ^{[1
]}

Tong, Yun ^{[1
]}

Ye, Yutong

Zhou, Guorong ^{[1
]}

He, Jinfeng ^{[1
]}

Zhu, Jiaye ^{[1
]}

Ren, Xuhui ^{[1
]}

Zhang, Nan ^{[2
]}

Wang, Huigang ^{[3
]}

Chen, Pengzuo ^{[1
]}

机构：

[1] Zhejiang Sci Tech Univ, Sch Chem & Chem Engn, Key Lab Surface & Interface Sci Polymer Mat Zhejia, Hangzhou 310018, Zhejiang, Peoples R China

[2] SINOPEC Shanghai Res Inst Petrochem Technol Co Ltd, Shanghai 201208, Peoples R China

[3] Zhejiang Normal Univ, Hangzhou Inst Adv Studies, 1108 Gengwen Rd, Hangzhou 311231, Zhejiang, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 494卷

基金：

中国国家自然科学基金;

关键词：

F; -modification; Bismuth catalyst; CO2; Electroreduction; Co -production of formate; Zn-CO2; Battery; REDUCTION;

D O I：

10.1016/j.cej.2024.153105

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Electrocatalytic CO2 reduction (ECO2R) to produce formate is one of the essential routes for CO2 upgrading. Herein, the bismuth oxyfluoride (BiOF) material is firstly rationally designed as a precursor to derive the F-modified Bi catalyst (FD-Bi) for ECO2R. The FD-Bi catalyst achieves more than 90 % Faradaic efficiency of formate (FEformate) over a wide potential range of -0.5 similar to -1.2 V vs. RHE. By coupling in-situ Raman and infrared spectroscopy, the transformation of BiOF to FD-Bi and the formation of key *OCHO intermediates have been revealed. Density functional theory (DFT) calculations further confirm the optimized electronic structure and the favorable adsorption energies of intermediates on F-modified Bi catalyst. In a coupled system for the co-production of formate, a high FEformate of 159.1 % can be realized at a small cell voltage of 1.9 V. In addition, Zn-CO2 battery equipped with FD-Bi delivers a high power density of 2.68 mW<middle dot>cm(-2) and superior stability.

引用

页数：9