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通过在MoB₂表面生长碳纳米管来构建异质接口,以在广泛的pH范围内促进进化反应

Jianhang Sun¹, Feifan Guo¹, Xuan Ai²

¹Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China.

Small (Weinheim an der Bergstrasse, Germany)

|October 31, 2023

概括

这项研究引入了一种新的Co,Ni-MoB2@CNT/CC异构结构,用于高效的进化反应 (HER). 这种先进的催化剂在性电解质中表现出卓越的性能,超过了基于的催化剂.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

像MoB2这样的过渡金属二化物显示出对演化反应 (HER) 的希望.
然而,它们的性能在性电解质中是有限的.
异质接口工程对于优化电催化剂性能至关重要.

研究的目的:

开发一种基于MoB2的异构结构,增强了HER活性,特别是在性介质中.
调查接口工程在提高电催化性能方面的作用.
创建一个强大的和高效的电催化剂用于生产.

主要方法:

合成了Co,Ni-MoB2@CNT/CC异构结构,使用了经过融盐辅助的热减少.
使用NiMo6和Co复合物作为碳布上的前体.
在MoB2上使用Co催化生长了碳纳米管 (CNT).

主要成果:

在Co,Ni-MoB2@CNT/CC的异构结构中,在10 mA cm-2.2的酸性 (98.6 mV),中性 (113.0 mV) 和性 (73.9 mV) 电解质中,HER的过度潜力较低.
在500 mA cm-2的性溶液中表现出显著的电化学活性,超过了Pt/C/CC.
在性条件下保持超过50小时的性能.

结论:

构建的异构结构显著提高了HER的性能,特别是在性环境中.
接口工程是有效的优化MoB2电催化剂为HER.
Co,Ni-MoB2@CNT/CC催化剂为生产的贵金属催化剂提供了一个有希望的替代品.

关键词:

碳纳米管是如何使用的不同质接口工程不同质接口工程气演化反应反应的反应金属化物金属化物广泛的pH值范围.

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