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作为高性能酸氧演化反应电催化剂的Mo-Doped Mesoporous RuO2球体

Yixin Zhang¹, Jing Dong¹, Tingting Sun²

¹State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.

Small (Weinheim an der Bergstrasse, Germany)

|November 8, 2023

概括

在酸性介质中,用添加的半孔二氧化球显示出氧化演化反应 (OER) 的优异性能. 这一进步为高效的水电解技术提供了有希望的催化剂.

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:

为氧化演化反应 (OER) 开发高效稳定的电催化剂对于推进水电解至关重要.
二氧化卢 (RuO2) 是一个关键材料,但其在酸性条件下的稳定性和效率需要改进.

研究的目的:

为OER制造一种高活性,酸稳定的电催化剂.
调查 (Mo) 兴奋剂对半孔二氧化卢球体性质的影响.

主要方法:

采用一种易于浸和后化的方法,使用半孔碳球作为模板.
被添加到二氧化结构中,以创建Mo-RuO2催化剂.
电化学性能通过使用诸如超电位和Tafel斜率测量等技术进行评估.

主要成果:

最佳的Mo0.15-RuO2催化剂 (15 mol.% Mo 兴奋剂) 显示出较低的超电位 (147 mV 在 10 mA cm-2) 和小的 Tafel 斜率 (38 mV dec-1).
与商业RuO2.2相比,催化剂在酸性电解质中表现出更强的电化学稳定性.
鉴定结果显示,其表面积很大,并且具有强大的中孔结构.

结论:

兴奋剂显著提高了中孔二氧化的OER性能.
改善的活性归因于Ru活性位点的中孔结构和修改的电子特性.
带有Mo-doped的半孔RuO2球体是酸性介质中高效电催化OER的有希望的候选者.

关键词:

酸性氧的演化反应反应它们是半孔球体.的兴奋剂可能是.二氧化卢二氧化是什么意思

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