塔菲尔方程
电催化剂
过电位
材料科学
石墨烯
化学工程
催化作用
磷化物
制氢
氧化物
电解
电解水
复合数
贵金属
分解水
无机化学
纳米技术
金属
化学
电化学
复合材料
冶金
电极
物理化学
光催化
生物化学
工程类
电解质
作者
Hongzhi Wang,Qi Gao,Shaofeng Sun,Weiguo Zhang,Susu Yao
标识
DOI:10.1016/j.jssc.2020.121596
摘要
It is critical for energy conversion research to seek an inexpensive and efficient electrocatalyst for the hydrogen evolution reaction (HER). Transition metal phosphides are gradually being considered as prospective catalysts to replace noble metal catalysts such as Pt. Herein, we report an easy way to synthesize cobalt phosphide nanorods grown on a nitrogen-doped reduced graphene oxide layer composite ([email protected]) via hydrothermal growth and a low-temperature phosphorization process. This composite presents a marvelous performance for the HER in acid solution. It achieves a current density of 10 mA cm−2 with only a small overpotential of 90 mV, along with a Tafel slope of 87 mV·dec−1 in 0.5 M H2SO4. In addition, it has desirable long-term stability in the solution. In this work, we not only demonstrated a terrific electrocatalyst for the HER but also provid a simple preparation technique to fabricate graphene layers with other materials.
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