Crystalline/amorphous Ni/NiO core/shell nanosheets as highly active electrocatalysts for hydrogen evolution reaction

被引：260
作者：
Yan, Xiaodong [1 ]
Tian, Lihong [1 ,2 ]
Chen, Xiaobo [1 ]
机构：
[1] Univ Missouri, Dept Chem, Kansas City, MO 64110 USA
[2] Hubei Univ, Minist Educ, Key Lab Synth & Applicat Organ Funct Mol, Hubei Collaborat Innovat Ctr Adv Organochem Mat, Wuhan 430062, Hubei, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2015年 / 300卷
基金：
中国国家自然科学基金;
关键词：
Water electrolysis; Hydrogen evolution reaction; Nickel; Amorphous nickel oxide; NANOSTRUCTURED NICKEL PHOSPHIDE; AMORPHOUS MOLYBDENUM SULFIDE; NANOCRYSTALS; NANOPARTICLES; EFFICIENCY; OXIDATION; CATALYSTS; XPS; CO;
D O I：
10.1016/j.jpowsour.2015.09.089
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Novel crystalline/amorphous core/shell Ni/NiO nanosheets have shown a high electrocatalytic activity in hydrogen evolution reaction (HER). In 1 M KOH, they display an HER current of 5 mA cm(-2) at an overpotential of 110 mV with a good stability. It is proposed that their excellent HER performance is achieved through the synergistic effect between the Ni core and the amorphous NiO shell, where the Ni core can reduce the resistance and the amorphous NiO shell can accelerate both Volmer and Heyrovsky processes to drive HER at low overpotentials. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：336 / 343
页数：8
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