双功能
电催化剂
分解水
材料科学
阳极
异质结
化学工程
催化作用
阴极
电化学
无机化学
纳米技术
电极
光电子学
化学
物理化学
光催化
生物化学
工程类
作者
Qixing Du,Muhammad Arif Khan,Jie Zhu,Hongbin Zhao,Jianhui Fang,Daixin Ye,Jiujun Zhang
标识
DOI:10.1002/asia.202200035
摘要
It is still a challenge to realize the dream of a hydrogen-based economy using a robust catalyst for overall water splitting. Here, we introduce two-dimensional MoN/MoO2 heterostructure nanosheets using nickel foam as a substrate for water splitting. The heterojunction formation was achieved through the partial nitriding of a Mo-based precursor to MoN in the annealing process under NH3 environment. The heterogeneous interface between MoN and MoO2 as active sites is supposed to improve the surface reaction kinetics and electronic conductivity. Therefore, an excellent performance is achieved when MoN/MoO2 is employed as both cathode and anode electrocatalysts; the corresponding cell voltages are 1.57 and 1.84 V at 10 and 100 mA cm-2 in 1 M KOH, respectively. The promising bifunctional catalytic performance of our catalyst opens up a new way for efficient electrochemical water splitting.
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