双金属有机框架衍生Co-MoxN/Mo2C催化剂用于HER/OER双功能电催化反应
Ping Hu1, Fairy Fan Yang1, Fan Yang1
1School of Metallurgy Engineering, State Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Journal of colloid and interface science
|November 22, 2024
概括
研究人员使用金属有机框架 (MOF) 开发了一种基于的新型催化剂. 这种新材料Co-MoxN/Mo2C显示了和氧演化反应的增强性能,为贵金属催化剂提供了一个有希望的替代品.
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:
- 金属有机框架 (MOF) 是催化剂合成的多功能前体.
- 化 (MoN) 和碳化 (Mo2C) 具有类似的电子特性,但面临着制备方面的挑战.
- 在MoN/Mo2C复合材料中的聚合限制了它们的催化应用.
研究的目的:
- 设计和开发一种新的双金属Co-MOFs-Mo前体.
- 通过Mo兴奋剂来控制形态和增强电催化活性.
- 制造具有优越 HER 和 OER 性能的 Co-MoxN / Mo2C 催化剂.
主要方法:
- 一种新的双金属Co-MOFs-Mo前体的合成.
- 从Co-MOFs-Mo前体制成Co-MoxN/Mo2C催化剂的制造.
- 对演变反应 (HER) 和氧演变反应 (OER) 的电催化试验.
主要成果:
- 与Mo2N和Mo2N/Mo2C相比,Co-MoxN/Mo2C催化剂表现出独特的框架结构和更大的特定表面积.
- 在10mA·cm-2.2时达到297mV的HER超电位.
- 在20mA·cm-2.2时达到480mV的OER超电位.
结论:
- 开发的Co-MoxN/Mo2C催化剂对HER和OER都表现出卓越的电催化活性.
- 这项研究为设计基于的,不含贵金属的先进催化剂提供了洞察力.
- 新的MOF衍生方法克服了传统的MoN/Mo2C合成中的聚合问题.
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