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在WS₂和基化合物之间的W桥梁异构结构的界面和电子调制,以实现高效的整体水分

Xin Yu¹, Yaxin Li¹, Tingting Fang¹

¹Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, MOE Key laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Small (Weinheim an der Bergstrasse, Germany)

|September 1, 2023

概括

用于生产的高性能电催化剂是使用二硫化物 (WS2) 和基金属有机框架 (MOF) 开发的. WS2@W-CoPx混合催化剂在和氧进化反应中显示出卓越的双功能性能.

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:

高效的气生产对于可再生能源至关重要.
开发先进的电催化剂是提高演化反应 (HER) 和氧演化反应 (OER) 效率的关键.
硫化 (WS2) 和基于的金属有机框架 (MOF) 是催化有前途的材料.

研究的目的:

构建和研究由WS2和Co-based MOF衍生物组成的混合催化剂,用于增强生产.
探索 (W) 在MOF衍生品中作为电荷转移桥梁和稳定性增强剂的作用.
分析表面电荷分布对催化性能的影响.

主要方法:

三种混合催化剂的合成,结合了WS2和基于Co的MOF衍生品.
电化学表征以评估演变反应 (HER) 和氧演变反应 (OER) 在性介质中的性能.
整体水分裂 (OWS) 试验,以评估电池电压和稳定性.
密度函数理论 (DFT) 计算以了解反应机制和电子性质.

主要成果:

WS2@W-CoPx混合催化剂表现出卓越的双功能性能,对 HER (10 mA cm-2 的 62 mV) 和 OER (100 mA cm-2 的 278 mV) 的超电位低.
催化剂需要1.78V的低电池电压在50mA cm-2的整体水分裂,并表现出72小时的良好稳定性.
DFT的计算证实,WS2和W-CoPx的协同效应通过优化吸附能量来增强HER和OER活动.

结论:

混合催化剂WS2@W-CoPx为高效和稳定的整体水分裂提供了一个有前途的解决方案.
WS2与基于化物的MOF衍生品的战略整合为设计先进的电催化剂提供了可行的途径.
这项研究有助于开发可持续能能源生产的实际催化剂.

关键词:

在WS2上,我们可以看到WS2.桥梁行动是一个桥梁行动.电子调制是一种电子调制.这是一个界面接口.工作功能工作功能的工作功能.

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