Issue 9, 2022

Defect engineered SnO2 nanoparticles enable strong CO2 chemisorption toward efficient electroconversion to formate

Abstract

Oxygen vacancy (Ov) engineering of SnO2 electrocatalysts plays a crucial role in realizing efficient CO2 electroreduction (CO2RR) into formate. Herein, we demonstrate the rational synthesis of highly dispersed SnO2 nanoparticle electrocatalysts with an ultrahigh Ov content of up to 25.1% by a thermally induced strategy. The high Ov content greatly improves the intrinsic conductivity and remarkably enhances the chemisorption capacity to CO2, thus boosting the catalytic activity and reaction kinetics of CO2 electroconversion into formate. These advantages make the Ov-engineered SnO2 electrocatalysts exhibit both a high Faraday efficiency (FE) of nearly 90% and a superior cathodic energy efficiency of above 60% to produce formate in a wide current range from 100 to 400 mA cm−2 in a flow cell. A commercially required current of 200 mA cm−2 can be obtained at only 2.8 V in a full cell. The present Ov engineering strategy exhibits the possibility for the design and construction of high-activity oxide-based electrocatalysts.

Graphical abstract: Defect engineered SnO2 nanoparticles enable strong CO2 chemisorption toward efficient electroconversion to formate

Supplementary files

Article information

Article type
Paper
Submitted
30 Nov 2021
Accepted
21 Jan 2022
First published
22 Jan 2022

Dalton Trans., 2022,51, 3512-3519

Defect engineered SnO2 nanoparticles enable strong CO2 chemisorption toward efficient electroconversion to formate

B. Ning, M. Liu, Y. Hu, H. Jiang and C. Li, Dalton Trans., 2022, 51, 3512 DOI: 10.1039/D1DT04045F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements