INORGANICCHEMICALSINDUSTRY ›› 2016, Vol. 48 ›› Issue (8): 74-.

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Electrocatalytic performances of NiCo2S4 compound towards oxygen reduction

TIAN  Xi-Qiang, ZHAO  Dong-Jiang, MA  Song-Yan, CHI  Cai-Xia, DONG  Yan-Ping, TIAN   Jun, QIAO  Xiu-Li   

  1. School of Food and Pharmaceutical Engineering,Suihua University,Suihua 152061,China
  • Online:2016-08-10 Published:2016-08-10

Abstract: NiCo2S4 compound was synthesized by a hydrothermal method using Co(Ac)2,Ni(Ac)2,and thiourea as precursors.The physical characteristics and catalytic performances of the as-prepared sample were characterized by XRD,SEM,and RDE technique.The sample presents agglomerated spherical particles and good dispersion,reveals the crystalline characteristics of cubic NiCo2S4 compound.The catalyst showed higher electrocatalytic activity towards oxygen reduction reaction(ORR) in 0.5 mol/L H2SO4 than that obtained with CoS2 and NiS,and had the open circuit potential of 0.75 V(vs.NHE).The oxygen molecule reduction may proceed via the overall four-electron transfer reaction to water formation

Key words: oxygen reduction, chalcogenides, catalytic activity, hydrothermal method

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