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为稳定的固态金属电池建造自承载PDOL电解质膜

Wei Zhang¹, WenSheng Tian², Xue Chen²

¹State Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Journal of colloid and interface science

|June 20, 2025

概括

这项研究引入了第一种用于电池的自承载型聚1,3-二氧化固态电解质 (PDOL-SE). 这种新的电解质膜,没有支框架,显示出出色的性能和稳定性.

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
聚合物科学聚合物科学

背景情况:

聚1,3-二醇) (PDOL) 固态电解质 (SSEs) 为电池应用提供了出色的接口特性.
目前基于PDOL的SSE通常依赖于支持框架,剩余的单体可以阻碍性能并加速退化.
开发独立于框架的PDOL SSE对于推进电池技术至关重要.

研究的目的:

开发和描述第一个自支的聚1,3-二氧化) 固态电解质膜 (PDOL-SE).
在没有配套框架的情况下研究基于PDOL的SSE的内在电化学特性.
为了证明PDOL-SE在离子电池中的潜力.

主要方法:

通过预聚合和滚筒压缩制造一个自承载PDOL-SE膜.
电化学表征包括离子导电性和离子转移数测量.
测试LiFePO4干PDOL-SE干Li袋式电池,以评估电池性能.

主要成果:

在30°C时,PDOL-SE膜实现了0.122 mS cm-1的离子导电性.
记录了0.93的异常高的离子转移数.
在150个循环后,LiFePO4adderPDOL-SEadderLi袋式电池提供了143.9 mAh g-1 ,容量保留率为91%.

结论:

独立于框架的PDOL-SE的开发是固态电解质的重大进展.
这种简单的制造方法为研究PDOL固有的特性提供了新的可能性.
对于下一代离子电池来说,PDOL-SE展示了有前途的性能.

关键词:

金属电池是一种金属电池.这是PDOL的PDOL.自己支持的自助式.固态电解质固态电解质

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