为设计高效、廉价和耐用的催化裂解水制氢电催化剂,合成了Ni₃S₂纳米线@NiCo-LDH纳米复合材料(Ni₃S₂@NiCo-LDH)。结果表明,该复合材料具有大量的活性位点,表现出很好的电催化制氢性能。在含有尿素的KOH电解液中,Ni₃S₂@NiCo-LDH电极材料仅需1.373 V就能达到10 mA/cm²的电流密度。在双电极体系Ni₃S₂@NiCo-LDH//Pt中,电流密度为 10 mA/cm²时电压仅为1.463 V。因此,Ni₃S₂@NiCo-LDH纳米复合材料是一种优良的新型催化水解产氢电催化剂。

Aiming to design efficient,inexpensive,and durable electrocatalyst for hydrogen production via catalytic cracking of water,Ni₃S₂ nanowire@NiCo-LDH nanocomposite (Ni₃S₂@NiCo-LDH) is synthesized.The results show that the prepared composite has a large number of active sites and exhibits excellent electrocatalytic hydrogen production performance.Ni₃S₂@NiCo-LDH electrode material achieves a current density of 10 mA·cm^-2 at only 1.373 V in a KOH electrolyte containing urea.In Ni₃S₂@NiCo-LDH//Pt,a two-electrode system,the voltage is only 1.463 V at a current density of 10 mA·cm^-2.It is verified that Ni₃S₂@NiCo-LDH nanocomposite is an excellent new catalytic hydrolysis hydrogen production electrocatalyst.

王志豪(1999-),男,硕士生,研究方向为电化学储能与电催化制氢,21216022288@stu.csust.edu.cn;范金成(1978-),男,博士,教授,研究方向为电化学储能与电催化制氢,通讯联系人,fanjincheng2009@163.com。