Electrochemical and electrocatalytic performance of FeSe_2 nanoparticles improved by selenium matrix

摘要

Transition metal selenides has been extensively investigated as anode materials for batteries and efficient electrocatalyst for overall water splitting. The low conductivity and large volume change may lead to their poor performance. Herein, we design a method to improve the cycling stability of FeSe2 nanoparticles. The introduction of selenium matrix can enhance the efficiency of conversion reaction and accelerate charge transfer for FeSe2. In addition, the overpotential and Tafel slope of FeSe2 can be reduced under the effect of selenium matrix. Our work may offer a promising strategy to improve electrochemical and electrocatalytic performance of transition metal selenides. (c) 2020 Elsevier B.V. All rights reserved.