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火诱导的Cu和F共多维Co₃O₄与调制的电子结构和丰富的氧气空位作为优秀的氧气进化反应电催化剂

Xiaowei Li¹, Jianmin Gou¹, Lili Bo²

¹Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China.

Journal of colloid and interface science

|March 15, 2025

概括

为氧化演化反应 (OER) 开发高效的非贵金属电催化剂至关重要. 这项研究介绍了Cu-F-Co3O4,一种新型催化剂,通过兴奋剂和结构修改来提高OER性能,以改善水氧化.

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:

对于氧化演化反应 (OER) 的高效非贵金属电催化剂对于能量转化技术至关重要.
开发稳定且具有成本效益的替代品至贵金属催化剂仍然是一个重大挑战.

研究的目的:

为了合成和描述OER的新型非贵重电催化剂.
为了研究合铜 (Cu) 和 (F) 到Co3O4对OER性能的结构和电子效应.
了解通过表面重建增强OER活动的机制.

主要方法:

通过灭方法合成Cu-F-Co3O4.
实验性表征包括电化学测量.
理论计算 (例如,DFT) 来分析电子结构和缺陷形成.

主要成果:

在Co3O4中和F的注促进了CuCo2O4-yFy/CuO异质连接的形成,其中有丰富的氧气空缺.
工程催化剂表现出增强的OER活性,最佳催化剂 (Cu-F-Co3O4-0.7) 在10mA·cm-2.7时显示出290mV的低超电位.
催化剂表现出了显著的稳定性 (>100小时),并且表现优于原始的Co3O4和基准RuO2.

结论:

Co3O4的辅助和F有效地激活了表面重建,导致了优异的OER性能.
这些发现为设计先进的螺旋氧化物电催化剂提供了洞察力,通过工程离子和阴离子缺陷.
这项工作有助于开发高效和耐用的电催化剂,用于氧化水的应用.

关键词:

在Cu和F的联合兴奋剂中,Cu和F共同兴奋剂.电催化学是一种电催化学.氧的演化反应反应的反应.斯宾尼尔氧化物是什么?表面重建的重建.

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