Issue 27, 2020

Cobalt doping of FePS3 promotes intrinsic active sites for the efficient hydrogen evolution reaction

Abstract

Exploring Earth-abundant electrocatalysts to achieve the efficient hydrogen evolution reaction (HER) is important for the development of clean and renewable hydrogen energy. Herein, we focus on a representative transition metal phosphosulfide electrocatalyst FePS3. Enlightened by our theoretical calculations that Co dopants improve H affinity on P sites and electrical conductivity, we prepared a series of Fe1−xCoxPS3 (x = 0, 0.05, 0.1, 0.15, 0.2, 0.25) compounds and characterized them by XRD, ICP, XPS, Raman, SEM, TEM, EDS, and resistivity and electrochemical measurement. It is found that the overpotential can be reduced by 166 mV, and the Tafel slope drops from 170 mV dec−1 to 80 mV dec−1. This work provides new insights to optimize the electrocatalytic hydrogen evolution activity of related transition metal phosphosulfides.

Graphical abstract: Cobalt doping of FePS3 promotes intrinsic active sites for the efficient hydrogen evolution reaction

Supplementary files

Article information

Article type
Communication
Submitted
17 May 2020
Accepted
23 Jun 2020
First published
24 Jun 2020

Nanoscale, 2020,12, 14459-14464

Cobalt doping of FePS3 promotes intrinsic active sites for the efficient hydrogen evolution reaction

S. Wang, B. Xiao, S. Shen, K. Song, Z. Lin, Z. Wang, Y. Chen and W. Zhong, Nanoscale, 2020, 12, 14459 DOI: 10.1039/D0NR03819A

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