三维自支撑电极Ni_(0.33)Co_(0.67)Se_2纳米线阵列:一种高效析氢阴极材料  

Self-Supported Ni_(0.33)Co_(0.67)Se_2 Nanowire Arrays:An Efficient 3D Hydrogen-Evolving Cathode

作　　者：孙旭平[1] 刘丹妮[1,2] 陆群[2] 

机构地区：[1]四川大学化学学院,成都610064 [2]西南交通大学生命科学与工程学院,成都610031

出　　处：《西华师范大学学报（自然科学版）》2016年第1期91-94,106,共5页Journal of China West Normal University(Natural Sciences)

基　　金：国家自然科学基金项目(21175129)

摘　　要：采用水热法在钛网上生长前驱物,再通过硒化反应得到自支撑电极-镍钴硒纳米线阵列(Ni_(0.33)Co_(0.67)Se_2NW/TM)。Ni_(0.33)Co_(0.67)Se_2NW/TM作为电化学析氢电极在0.5 M硫酸中有很高的催化活性及稳定性,产氢过电位为110 m V,需要209 m V过电位得到100 m A·cm^(-2)电流密度,而且在12 h内保持稳定。In this paper,it is reported that Ni0.33Co0.67Se2nanowire arrays on Ti mesh（ Ni0.33Co0.67Se2 NW/TM）via selenization reaction behave as a robust integrated 3D hydrogen-evolving cathode in acid. In the experiment,the electrode exhibited a low onset overpotential of 110 m V and a small Tafel slope of 38 m V·dec^- 1 under the condition of overpotentials of 209 m V to attain current density of 100 m A·cm^- 2,and maintained catalytic activity for at least 12 h.

关 键 词：Ni0.33Co0.67Se2 纳米线阵列 自支撑电极 电催化 氢能 

分 类 号：O646[理学—物理化学]