电催化剂
镍
材料科学
石墨烯
阳极
氮化物
阴极
分解水
析氧
化学工程
钼
电极
电流密度
热液循环
过渡金属
无机化学
纳米技术
电化学
催化作用
化学
冶金
物理化学
光催化
图层(电子)
生物化学
工程类
物理
量子力学
作者
Yibing Liu,Bowen Zhou,Yubing Zhang,Weiping Xiao,Bin Li,Zexing Wu,Lei Wang
标识
DOI:10.1016/j.jcis.2023.01.069
摘要
Transition metal nitride (TMNs) electrocatalysts have attracted tremendous attentions for their unique electron structure, high activity, and excellent stability. Herein, a two-dimensional (2D) graphene-like structured nickel-molybdenum nitride (Ni-MoN) on nickel foam (NF), is prepared via facile hydrothermal and following nitridation process. The as-prepared Ni-MoN-450 (pyrolysis at 450 °C) displays good hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performances in alkaline media. Only 22 mV and 117 mV are needed to achieve current densities of 10 mA cm-2 and 500 mA cm-2 in 1.0 M KOH, respectively, toward HER. The assembled two-electrode system, with the synthesized Ni-MoN-450 as the anode and cathode, exhibits good performance to achieve 1000 mA cm-2 in 1.0 M KOH + 25 °C and 6.0 M KOH + 80 °C. Moreover, it also presents long-term stability under large-current density, which verified its robust property.
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