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在电解质 - 电极接口处在现场建立快速运输通路,使得无树脂和长寿命的固态电池成为可能

Wei Zhang¹, Xiang Hu², Yang-Jie Liu²

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

|November 5, 2024

概括

研究人员通过在现场聚合1,3-二氧化 (DOL) 为电池开发了先进的复合固态电解质 (CSEs). 这项创新显著降低了接口电阻,提高了工业应用的离子导电性和电池性能.

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
储能储能储能储能储能储能

背景情况:

复合固态电解质 (CSEs) 结合了电池的陶和聚合物特性.
接口阻力仍然是一个主要的挑战,阻碍了CSEs的实际应用.
开发强大的固态电解质对于下一代电池技术至关重要.

研究的目的:

为解决电池中CSE的界面电阻问题.
提高固态电解质的离子导电性和电化学性能.
促进工业化更安全,更高效的电池系统.

主要方法:

通过医生膀,制造Li6.4La3Zr1.4Ta0.6O12/多乙烯化物 (LLZTO/PVDF) 膜.
在电解质-电极接口使用双盐 (LiPF6和LiDFOB) 在现场聚合1,3-二氧化 (DOL),形成聚1,3-二氧化 (PDOL).
对LLZTO/PVDF@PDOL膜和LiLiFePO4 (LFP) 电池进行电化学表征.

主要成果:

为LLZTO/PVDF@PDOL.实现了3.578mS cm-1的高室温离子导电性.
在LFP电池中显示出 143 mAh g-1 的排放特定容量.
展现出出色的循环稳定性,在2°C的1000个循环后保持了81.7%的容量,袋式电池的高能量密度为190Wh kg-1.

结论:

在DOL的现场聚合有效地减轻了CSEs的界面电阻.
开发的LLZTO/PVDF@PDOL电解质显示出对高性能电池的重大承诺.
这种方法为先进的固态电解质的工业应用提供了可行的途径.

关键词:

在现场聚合.电池是一种电池.长周期长周期长周期聚1,3-二氧) 是一种聚1,3-二氧.固态电解质固态电解质

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