Open AccessControllable preparation and electrocatalytic hydrogen evolution characteristics of Fe3S4 nanocrystals
Author(s) -
Mingxia Li,
Ni Xiong,
Xin Zhou,
Weiqi Li
Publication year - 2022
Publication title -
applied chemical engineering
Language(s) - English
Resource type - Journals
ISSN - 2578-2010
DOI - 10.24294/ace.v5i1.1401
Subject(s) - overpotential , dehydrogenation , electrocatalyst , tafel equation , electrochemistry , catalysis , chemical engineering , materials science , oleylamine , inorganic chemistry , particle size , particle (ecology) , morphology (biology) , nanocrystal , chemistry , nanotechnology , electrode , geology , organic chemistry , oceanography , engineering , paleontology
In order to obtain better electrocatalytic hydrogen evolution performance, Fe3S4 with different morphologies was synthesized by controlling the reaction conditions. During that progress, the ferric oleate as an iron source, and the sulfur powder dissolved in oleylamine as a sulfur source. Fe3S4 with particle morphology proved to have the best electrochemical catalytic activity after adding 40% carbon black. In dehydrogenation, the overpotential was 234 mV and the Tafel slope was 213 mV/dec at a current density of 10 mA/cm2. Meanwhile, Fe3S4 with a particle morphology exhibited superior electrochemical stability. Therefore, the controllably fabricated Fe3S4 with a particle morphology is a promising electrocatalyst for dehydrogenation.