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一个新的超强度和自我愈合的固体聚合物电解质,用于固体金属电池

Jing Suo¹, Yaya Jia¹, Xinxin Zhu²

¹School of Chemical Engineering, North China University of Science and Technology, Tangshan, 063009, China.

Advanced materials (Deerfield Beach, Fla.)

|October 13, 2024

概括

液体金属纳米颗粒 (LM) 通过防止树的生长来增强固体金属电池 (SSMB). 这项创新提高了电池的稳定性和能量密度,以实现更安全,高性能的电化学能量存储.

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:

固体金属电池 (SSMB) 对高能量密度和安全性具有前景.
树突的生长和电解质的不良特性阻碍了SSMB的应用.

研究的目的:

为SSMBs开发一种复合聚合物电解质 (CPE) 与液态金属 (LM) 纳米粒子.
调查LM对树抑制和电池性能的影响.

主要方法:

设计了一种基于氧化聚乙烯的CPE,其中包含LM纳米粒子.
在固体电解质内的电场下研究了LM纳米粒子运动.
制造和测试的对称SSMB电池和袋式电池.

主要成果:

LM纳米粒子促进回归阳极,并与树突合金合金,抑制生长.
对称细胞在0.1和0.2 mA cm-2下分别在1800和800小时内表现出循环稳定性.
袋式电池的能量密度达到230 Wh kg-1.1.

结论:

LM纳米粒子是SSMB中CPE的有效性能增强填充剂.
这种方法显示出开发高性能SSMB的巨大潜力.
液态电池集成提供了一种可行的策略,用于克服固态电池中的树石问题.

关键词:

这是一种自我愈合的疗法.固体聚合物电解质的电解质固体金属电池固体金属电池超强硬性的超强硬性.

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