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1D/3D双碳支持的Mott-Schottky型Co-Co2P异质连接,用于pH-通用进化

Zhengyang Liu¹, Chao Feng², Shuting Yang³

¹School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China.

Journal of colloid and interface science

|December 10, 2023

概括

研究人员开发了一种新型催化剂 (Co-Co2P@CNT//CM),用于高效,稳定和低成本的生产. 这种催化剂在各种pH水平上表现出色,推动了可持续经济的目标.

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:

可持续气生产的需求正在增长.
为演化反应 (HER) 开发高效稳定的催化剂至关重要.
异质连接催化剂为提高HER性能提供了有希望的解决方案.

研究的目的:

设计和合成一种低成本,高效,稳定的异质连接催化剂,用于pH-通用进化.
研究Mott-Schottky异质连接和双碳封闭系统的协同效应.
了解增强催化活性的潜在机制.

主要方法:

催化剂合成的连续空间限制-热解路径.
在1D/3D N,P 合碳矩阵 (Co-Co2P@CNT//CM) 中制造Mott-Schottky类型的Co-Co2P异质连接.
在不同的pH值中对演化反应 (HER) 性能进行电化学表征.
理论计算以阐明Mott-Schottky效应和界面电荷转移.

主要成果:

Co-Co2P@CNT//CM 呈现出优异的pH-通用HER性能,具有较低的超电位 (142 mV 在酸中,205 mV 在中,262 mV 在PBS在10 mA cm−2).
异构接口和双碳封闭系统之间的协同效应促进了电荷传递,暴露了活性站点.
理论分析证实了Mott-Schottky效应诱导导导向的电荷交换,降低动力障碍并优化吸附的自由能量.

结论:

开发的Co-Co2P@CNT//CM催化剂显示出卓越的HER活性和稳定性.
莫特-肖特基异质连接和双碳矩阵设计有效提高了电催化性能.
这项工作为设计高效生产的先进催化剂提供了途径.

关键词:

1D/3D 双碳封闭封闭在Mott-Schottky类型的异质连接中.连续的空间限制-热解.在pH-普世演化过程中

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