一个可扩展和长周期寿命的600 Wh kg-1 固态金属袋细胞
Xudong Peng1,2, Yang Zhang3, Qiyu Wang3,4
1Department of Mechanical and Energy Engineering, SUSTech Energy Institute for Carbon Neutrality, Southern University of Science and Technology, Shenzhen, China.
Nature communications
|November 27, 2025
概括
研究人员使用一种新型凝固态电解质和表面修饰开发了一种具有高特异能 (604.2Wh/kg) 的新型金属电池. 这一突破使电动飞机等苛刻应用的长周期寿命成为可能.
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:
- 目前的离子电池缺乏用于电动飞机和船舶等新兴应用所需的高特异能.
- 在金属电池中实现高电池水平的特定能量 (≥600Wh/kg) 仍然是一个重大挑战.
研究的目的:
- 开发一种可扩展生产具有高特异能的长周期金属电池的实用战略.
- 克服当前电池技术的局限性,用于先进的应用.
主要方法:
- 一个协同策略,整合精确设计的碳酸盐基凝固态电解质与表面修改的 (Li) 金属阳极.
- 在现场凝技术限制不稳定的碳酸盐溶剂分子并抑制寄生反应.
- 引入双连续梯度聚合物层,以调节沉积并增强防潮/氧的耐用性.
主要成果:
- 一个11Ah级金属电池实现了604.2Wh/kg (626.4Wh/kg不包括包装) 的高特异能.
- 在精益电解质条件下 (0.85 g/Ah),电池运行了100多个周期,能量保留率为92.83%.
- 实现了无损的处理,避免了苛刻的生产要求.
结论:
- 拟议的战略提供了一种可扩展生产高特异能,长周期金属电池的实用方法.
- 这一进步解决了电力运输和其他新兴领域对高性能储能的关键需求.
- 开发的电池技术对未来要求更高能量密度和寿命的应用具有显著的前景.
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