由双连续结构的电解质弹性体为固态电池应用实现的坚固接口
Qing-Yao Zhu1,2, Xiao-Xue Wang1,2, De-Hui Guan1
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P.R. China.
Angewandte Chemie (International ed. in English)
|January 17, 2026
概括
具有双连续结构的新型弹性体固态电解质为更安全,更高能量的固态电池提供了增强的机械性能和稳定的接口,防止了树的生长和短路.
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:
- 固态电解质 (SSEs) 对于安全的电池至关重要,但往往缺乏机械弹性和良好的接口接触.
- 机械性能有限和接口粘附性差,阻碍了当前SSE的实际应用.
研究的目的:
- 开发具有双连续架构的新型弹性体固态电解质,以提高电池的安全性和性能.
- 解决传统SSE中机械不稳定性和差距接口接触的局限性.
主要方法:
- 采用了现场相位分离策略来创建具有双连续结构的弹性SSE.
- 离子导电性,电化学稳定性,机械性质 (弹性恢复性,伸展性,附着性) 和树抑制的表征.
主要成果:
- 开发的SSEs具有高离子导电性 (在25°C时7.8 × 10−4 S cm−1) 和出色的弹性恢复性 (82%).
- 双连续结构提供了卓越的伸展性 (1800%),耐疲劳性和穿孔强度,确保了强大的接口接触 (粘附能量≈43.9 J m-2).
- 对称电池在2000小时后没有出现短路,而金属和O2电池表现出高特异性容量和稳定的循环 (500个循环).
结论:
- 双连续结构的弹性体电解质为安全,高能固态电池提供了一个有前途的战略.
- 这些电解质保持机械完整性,抑制树突的生长,使其在各种条件和滥用测试下能够稳定运行.
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