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作为进化反应的催化剂的Ni-C-N纳米板

Jie Yin¹, Qiaohui Fan², Yuxuan Li¹

¹Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, and The Research Center of Biomedical Nanotechnology, Lanzhou University , Lanzhou 730000, P. R. China.

Journal of the American Chemical Society

|October 25, 2016

概括

研究人员开发了薄而稳定的导电混合-碳- (Ni-C-N) 纳米板. 这些先进的材料作为高效的进化反应的非催化剂,

科学领域:

材料科学
电化学
催化剂

背景情况:

开发高效且具有成本效益的演化反应 (HER) 对于可持续能源技术至关重要.
基于的催化剂效率很高但价格昂贵,

研究的目的:

报告一种用于制备新型混合-碳- (Ni-C-N) 纳米板的简单方法.
评估这些Ni-C-N纳米片在各种电解质中的演化反应 (HER) 的催化性能.

主要方法:

使用简单的化和剥皮过程合成混合Ni-C-N纳米片.
合成的纳米片因其结构性,化学性和电气性质而具有特征.
在酸性 (0. 5M H2SO4),性 (1. 0M KOH) 和中性 (1. 0M PBS,pH 7) 条件下评估了HER的电催化活性.

主要成果:

由此产生的Ni-C-N纳米板是超薄的 (<2nm),化学稳定,具有金属导电性.
催化剂在0. 5M H2SO4中表现出极好的HER性能,发作电位为34. 7mV,超电位为60. 9mV在10mA cm-2.
经过70小时的测试,观察到显著的长期稳定性,只有~10%的电流下降.

结论:

这种简单的合成为生产高性能Ni-C-N纳米板提供了可扩展的途径.
这些混合纳米片代表了实际演变反应的有希望的非贵金属替代品.
已证明的稳定性和效率突显了它们在电化学能量转换应用中的潜力.

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