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来自黄瓜的IrMo纳米集群多的多孔碳电催化剂[6]uril提升高效的性进化

Xin Xiao^1,2, Zheng Li², Ying Xiong¹

¹College of Chemistry, Liaoning University, Shenyang 110036, P. R. China.

Journal of the American Chemical Society

|July 19, 2023

概括

研究人员开发了一种新型的-注射碳电催化剂 (IrMo-CBC),以增强基媒介中的进化反应 (HER). 这种催化剂表现出卓越的性能,克服了传统高贵金属催化剂对高效生产的局限性.

科学领域:

电化学
材料科学
催化剂

背景情况:

贵金属电催化剂对产生效率高,但由于演化反应 (HER) 动力学缓慢,在性介质中面临挑战.
在性环境中,高水分离能大大阻碍了电化学水分过程.

研究的目的:

开发一种高活性和稳定的电催化剂,用于高效的性演变反应 (HER).
使用新型复合材料克服性介质中的HER的动力限制.

主要方法:

使用无模板方法制造由甲[6]uril衍生的多孔碳矩阵.
在多孔碳矩阵中支持超细的- (IrMo) 纳米集群,以创建IrMo-CBC电催化剂.

主要成果:

通过IrMo-CBC电催化剂显著增加了性HER活性.
在 10 mA cm-2 时达到 12 mV 的极低超电位,在 50 mV 超电位时达到 28.06 mV dec-1 的极小 Tafel 斜率和 11.6 H2 s-1 的 TOF.
与大多数基于的催化剂和商业Pt/C相比,表现出优异的性能,法拉达效率为98%.

结论:

库库比特[6]uril衍生的碳矩阵和IrMo纳米集群的独特结构协同增强了HER的性能.
在性电解质中,IrMo-CBC是一个有前途的替代品.

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