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金属有机协调增强的金属聚合物电解质用于宽温度固态金属电池

Pei-Chen Zhao¹, Yaoda Wang¹, Qi-Sheng Huang¹

¹State Key Laboratory of Coordination Chemistry, MOE Key Laboratory of Mesoscopic Chemistry, MOE Key Laboratory of High Performance Polymer Materials and Technology, Jiangsu Key Laboratory of Advanced Organic Materials, Tianchang New Materials and Energy Technology Research Center, Research Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering., Nanjing University, Nanjing, 210023, P. R. China.

Angewandte Chemie (International ed. in English)

|December 4, 2024

概括

一种新的金属聚合物电解质通过提高离子导电性和界面稳定性来增强固态金属电池. 这种先进的材料为高性能,宽温度金属电池提供了有前途的解决方案.

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
聚合物化学聚合物化学

背景情况:

聚合物电解质在离子导电性,Li+转移和实际金属电池 (LMB) 应用的界面稳定性方面面临着挑战.
开发强大的固态电解质对于更安全,更高效的能源储存至关重要.

研究的目的:

为高性能固态LMB设计和合成一种新的金属聚合物电解质 (MPE).
通过金属有机协调增强战略解决传统聚合物电解质的局限性.

主要方法:

使用 (Mo) 轮复合物作为连接器合成金属聚合物.
在金属聚合物骨架中加入Mo-多氧金属酸盐 (Mo-POMs).
描述MPE的离子导电性,Li+转移数 (tLi+) 和电化学稳定性.

主要成果:

合成的金属聚合物表现出优异的机械和热稳定性,具有低玻璃过渡温度 (Tg < -50°C).
该MPE显示出具有竞争力的离子导电率 (0.712 mS cm-1在25°C) 和高的tLi+ (0.625).
该材料具有广泛的电化学稳定性窗口 (>5.0V) 和自我愈合特性.

结论:

金属有机协调增强的金属聚合物电解质为开发宽温度固态LMB提供了有前途的解决方案.
独特的设计有效地固定离子,并促进Li+盐分离,提高电池性能.
MPE的可重处理性和自我修复能力确保了良好的接口接触,并适应电极体积变化.

关键词:

金属聚合物的金属聚合物.金属有机协调有机协调摩-多聚氧甲基酸盐的使用.固态金属电池固态金属电池

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