持久固态电池具有高实际容量,通过现场聚合策略实现
Gangyong Li1, Zhaodi Wang1, Zhi Li2
1Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, China.
Advanced materials (Deerfield Beach, Fla.)
|March 10, 2025
概括
研究人员使用聚合物电解质开发了一种稳定的固态电池. 这项创新解决了诸如树增长等挑战,提高了可充电电池的安全性和性能.
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:
- 非水性可充电电池 (RAB) 使用离子液体电解质 (ILEs) 提供低成本,高容量和安全性.
- 挑战包括树的生长,接口降解,以及ILEs中的电解质腐蚀性.
研究的目的:
- 构建一个超稳定的固态电池 (SAB),解决当前RABs的局限性.
- 通过现场聚合策略来提高接口兼容性和电池安全性.
主要方法:
- 使用交叉连接的聚合物固态电解质 (PSE) 和PSE封装的石墨 (PG) 阴极通过现场聚合制造制造固态电池.
- 描述PSE离子导电性,对Al阳极的腐蚀性和阴极体积膨胀.
主要成果:
- PSE 呈现出高离子导电性 (4.15 × 10−3 S cm−1) 和对 Al 阳极的低腐蚀性.
- 由于聚合物被封闭,PG阴极中的石墨体积扩张是可以忽略的.
- 组装的SAB实现了高面积容量 (0.67 mAh cm-2在0.1 mA cm-2) 和超过10,000个周期没有容量衰减.
结论:
- 在现场的聚合策略成功地为SABs创建了一个稳定且兼容的接口.
- 这种方法为开发更安全,更稳定的可充电电池用于储能提供了有希望的途径.
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