Atomically dispersed Fe-O4-C sites as efficient electrocatalysts for electrosynthesis of hydrogen peroxide

Liuyue Cao; Hongrui Wang; Ningyan Cheng; Lei Zhang; Meiqing Shi; Bin-Wei Zhang

doi:10.1039/d3cc03969b

Atomically dispersed Fe-O₄-C sites as efficient electrocatalysts for electrosynthesis of hydrogen peroxide

Chem Commun (Camb). 2023 Oct 10;59(81):12148-12151. doi: 10.1039/d3cc03969b.

Authors

Liuyue Cao^{1

2}, Hongrui Wang¹, Ningyan Cheng³, Lei Zhang⁴, Meiqing Shi⁵, Bin-Wei Zhang^{1

6}

Affiliations

¹ School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China. binwei@cqu.edu.cn.
² School of Chemical Engineering, University of New South Wales, 2 High Street, Kensington, Sydney, NSW, 2052, Australia.
³ Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China. ningyancheng@ahu.edu.cn.
⁴ Centre for Clean Environment and Energy, Gold Coast Campus, Griffith University, Gold Coast, Queensland, 4222, Australia.
⁵ School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China. shimeiqing0925@126.com.
⁶ Center of Advanced Electrochemical Energy, Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing 400044, China.

PMID: 37740332
DOI: 10.1039/d3cc03969b

Abstract

The electrochemical reduction of oxygen via the 2e pathway is an environmentally friendly approach to the electrosynthesis of H₂O₂. Nevertheless, its sluggish kinetics and limited selectivity hinder its practical application. Herein, single Fe atoms anchored on graphene oxide (SA Fe/GO) with Fe-O₄-C sites are developed as an efficient electrocatalyst for the electro-synthesis of H₂O₂. These Fe-O₄-C site active centres could efficiently enhance the activity and selectivity towards 2e electrochemical oxygen reduction in an alkaline environment. The newly-developed SA Fe/GO electrocatalyst demonstrates exceptional electrochemical performance, exhibiting impressive activity with an onset potential of 0.90 and H₂O₂ production of 0.60 mg cm^-2 h^-1 at 0.4 V. Remarkably, it achieves a remarkable H₂O₂ selectivity of over 95.5%.