Crystalline/amorphous Ni/NiO core/shell nanosheets as highly active electrocatalysts for hydrogen evolution reaction
Crystalline/amorphous Ni/NiO core/shell nanosheets as highly active electrocatalysts for hydrogen evolution reaction
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DOI：
10.1016/j.jpowsour.2015.09.089
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发表时间：
2015-12
影响因子：
9.2
通讯作者：
Xiaodong Yan;Lihong Tian;Xiaobo Chen
中科院分区：
文献类型：
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作者：
Xiaodong Yan;Lihong Tian;Xiaobo Chen
新型的晶态/非晶态核壳结构Ni/NiO纳米片在析氢反应中表现出很高的电催化活性。在1 M KOH中，它们在110 mV的过电位下显示出5 mA cm− 2的HER电流，具有良好的稳定性。提出了它们优异的HER性能是通过Ni核和非晶NiO壳之间的协同效应实现的，其中Ni核可以降低电阻，而非晶NiO壳可以加速Volmer和Heyrovsky过程以在低过电位下驱动HER。
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−2at 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.