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含的高度高度层叠双氧化物用于高效,持久的空气电池

Bo Li^1,2,3,4, Jing Zhong^1,2,3,4, Hao Wang⁵

¹CityU-Shenzhen Futian Research Institute, 518045, Shenzhen, China.

Angewandte Chemie (International ed. in English)

|September 17, 2024

概括

一种新型的含的高价值高层双氧化物 (HV-HE-LDH) 催化剂 (FeCoNi2F4(OH) 4),用于高效的氧化演化和还原反应. 这种催化剂使高性能空气电池具有出色的往返效率和长期稳定性.

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:

对于氧演变反应 (OER) 和氧减少反应 (ORR) 的高效和稳定的双功能催化剂对于推进空气电池 (ZAB) 的发展至关重要.
高价值氧化物 (HVO) 和高氧化物 (HEO) 是有前途的,但通常涉及复杂的合成路径.
开发具有最佳电子结构和稳定性,具有成本效益和易于合成的催化剂仍然是一个挑战.

研究的目的:

为了合成一种新型的,低成本的引入的高价值高层双氧化物 (HV-HE-LDH) 催化剂.
为了研究其对空气电池的OER和ORR的催化性能.
了解其增强的催化活性和稳定性的结构-属性关系.

主要方法:

多离子共同沉方法用于合成FeCoNi2F4(OH) 4 HV-HE-LDH.
用光谱技术和理论模拟来分析电子结构和结合.
使用FeCoNi2F4(OH) 4@HCC阴极对ZAB进行电化学测试.

主要成果:

合成的FeCoNi2F4(OH) 4表现出高价金属,增强电子导电性和电荷转移,使其具有优异的OER活性.
加强的金属氧键和稳定的八面体几何构造有助于特殊的长期催化稳定性.
实现了高效的三相反应接口与快速氧气运输,提高了ORR性能.
ZABs在10 mA cm-2下显示了61.3%的高往返能源效率,并在1050个循环后保持了58.8%.

结论:

易于制备的FeCoNi2F4(OH) 4 HV-HE-LDH作为ZAB的高效和稳定的双功能催化剂.
结合和高离子的综合策略有效地优化了催化性能.
这项工作为开发下一代储能设备的先进催化剂提供了一个有希望的途径.

关键词:

含的多层双氧化物 (LDH).具有高的.高价值的高价值的价值长期的耐用性长期的耐用性空气电池 (ZAB) 是一种

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