Rational design of FeS_(2)microspheres as high-performance catalyst for electrooxidation of hydrazine

作     者：Jie Sun Chuangwei Liu Wenhan Kong Jie Liu Liangyu Ma Song Li Yuanhong Xu Jie Sun;Chuangwei Liu;Wenhan Kong;Jie Liu;Liangyu Ma;Song Li;Yuanhong Xu

作者机构：Institute of Biomedical EngineeringCollege of Life SciencesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China Department of Energy Conversion and StorageTechnical University of Denmark2800 Kgs.LyngbyDenmark Key Lab for Anisotropy and Texture of MaterialsSchool of Materials Science and Engineering Northeastern UniversityShenyang 110819China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第110卷第15期

页      面：161-166页

核心收录：

学科分类：0808[工学-电气工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(No.21874079) Nature Science Foundation for Outstanding Young Scientists of Shandong Province(No.ZR2018JL011) Key R&D Project of Shandong Province(No.GG201809230180) Taishan Scholars Program of Shandong Province(No.tsqn201909088) Outstanding Youth Innovation Team of Universities in Shandong Province(No.2019KJA027)。 

主　　题：Rational design Hydrazine electrooxidation FeS_(2)microspheres Electrochemistry 

摘      要：Inspired by the relatively recognized performance of transition metal sulfides in the oxidation of hydrazine,the catalytic properties of FeS_(2) and Fe_(3)S_(4) are compared via the density functional theory calculations.Due to the different coordination numbers of iron-sulfur,the free energies of the dehydrogenation steps on FeS_(2) are far less than those on Fe_(3)S_(4),which led to the much better catalytic performance of FeS_(2).Accordingly,FeS_(2) microspheres are rationally proposed as a more efficient electrocatalyst for hydrazine oxidation,which is then prepared by a facile one-step hydrothermal strategy.Such FeS_(2)microspheres show great activity for hydrazine oxidation with an onset oxidation potential of 0.22 V vs.reversible hydrogen electrode,and a peak current density of 16 m A cm^(-2).Meanwhile,stability and high faradaic efficiency(3.5e-/N_(2)H_(4))is obtained for hydrazine oxidation to N_(2).