(Invited) Active Fe-Oxide on Iron Phosphorus Trichalcogenides (FePS3) Nanosheets Surface for Highly Efficient Electrocatalytic Oxygen Evolution

Abstract

Active Fe-Oxide on Iron Phosphorus Trichalcogenides (FePS3) Nanosheets Surface for Highly Efficient Electrocatalytic Oxygen Evolution Ying Yin,1 Jiecai Han,1 and Bo Song2, * 1Centre for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China 2Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China Efficient and cost-effective oxygen evolution reaction (OER) electrocatalysts is of great importance for sustainable energy conversion technologies. Fe-based electrocatalysts have been intensively investigated because of their promising activity and earth abundance. However, the OER efficiency for most of the developed Fe-based electrocatalysts has been intrinsically limited due to their poor active site exposure yield. Herein, we report active Fe-oxide on FePS3 nanosheets as an efficient OER electrocatalyst for the first time. Benefiting from their atomic-thick structure and optimized electronic structure, the FePS3 nanosheets with Fe-oxide surface realize an improved OER activity compared with bulk FePS3. Our finding suggests that transition MPS3 (M = transition metal) nanosheets could serve as a new group of OER electrocatalysts with excellent property. *Corresponding Author: songbo@hit.edu.cn