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通过动态弹性体在全固态金属电池中制造超"强硬"间相

Wenya Lei¹, Baoyu Sun¹, Jiangning Liu¹

¹State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, Xi'an Jiaotong University, Xi'an 710049, China.

|December 30, 2025

概括

研究人员开发了一种全固态金属电池的新方法,通过用动态弹性体化学移植无机组件. 这提高了电池的稳定性和性能在广泛的温度范围内.

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:

全固态金属电池承诺高能量密度和安全性.
挑战包括固体电解质颗粒和金属之间的界面兼容性差,阻碍了稳定的循环.

研究的目的:

解决固态电池中的不兼容性问题.
通过使用一种新的化学接种策略,增强结构完整性和界面兼容性.

主要方法:

用动态弹性体对无机成分进行化学接种.
形成Si-O-Li共价链接并利用动态键重建.
拉伸应变,离子导电性和循环稳定性的表征.

主要成果:

实现了一种超强硬的材料,最大拉伸力为925%.
通过降低Li+转移扭曲度,提高了离子导电性至4.0 × 10−3 S cm−1.
在 1.0 mA cm-2 的对称细胞中,已证明稳定循环超过 3000 小时.
全细胞显示出广泛的温度适应性 (-40至80°C).

结论:

开发的策略为克服固态电池中的无机相不相容性提供了总体解决方案.
化学移植的弹性体增强了结构完整性和界面兼容性,从而提高了电池的性能和稳定性.

关键词:

全固态金属电池完全固态金属电池化学杂物化学杂物化学杂物动态弹性弹性体的动态弹性体它具有自我愈合的功能.固体电解质是一种固体电解质.

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