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氧化催化剂的表面电活性场所氧化流动电池的氧化催化剂

Aknachew Mebreku Demeku¹, Daniel Manaye Kabtamu^1,2, Guan-Cheng Chen¹

¹Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106335, Taiwan.

ACS applied materials & interfaces

|February 5, 2024

概括

一种新型的酸 (WZ) 催化剂,使用酸固定的 UiO-66 合成,通过增强电活性点和提高能源效率,显著提高了氧化还原流电池 (VRFB) 的性能.

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:

氧化还原流电池 (VRFB) 对于电网规模的能源存储至关重要.
开发高效和稳定的催化剂对于提高VRFB性能至关重要.
酸 (WZ) 材料在电催化剂方面表现有前途.

研究的目的:

合成一种具有高密度表面电活性位点的新型酸 (WZ) 催化剂.
调查VRFBs的WZ催化剂的结构性质和催化活性.
评估VRFB中的WZ催化剂的电化学性能.

主要方法:

通过双溶剂浸方法,利用酸固定UiO-66作为前体.
温和的烧焦温度,以创建表面的电活性点.
使用WZ催化剂对VRFB进行电化学表征和电荷放电试验.

主要成果:

WZ-22-650催化剂表现出高密度的表面电活性点,这是由于集群与四边形ZrO2.2的结合造成的.
WZ-22-650催化剂对VO2+/VO3-氧化还原对进行了卓越的催化活性.
与热处理石墨相比,使用WZ-22-650的VRFB实现了显著更高的电压和能源效率,即使在高电流密度下也是如此.

结论:

简单的合成方法产生了WZ催化剂,其强大的WO3定于ZrO2,增强了电活性位点.
WZ-22-650催化剂为VRFB提供了卓越的催化活性和出色的循环能力.
这项研究为先进的储能应用提供了一个有前途的基于氧化金属的催化剂.

关键词:

双溶剂方法是双溶剂的方法.电催化剂是一种电催化剂.金属-有机的框架.tungstated 尔科尼亚的使用情况氧化还原流电池氧化还原流电池

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