高度无机固体电解质介相使热安全的离子电池具有深度储存
Zhen-Hui Luo1, Yun-Fei Du1, Zhi-Jun Jiang1
1Z Energy Storage Center, Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 211189, Jiangsu, China.
ACS nano
|November 14, 2025
概括
一个新的高无机接口通过稳定酸硬碳来提高离子电池的安全性. 这提高了储能能力,并显著增加了热失控发作温度.
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:
- 由于热安全问题,离子电池的广泛采用受到阻碍.
- 传统的有机接口缺乏热稳定性,无法保护酸硬碳.
- 在储存过程中形成的反应性集群构成重大安全风险.
研究的目的:
- 为离子电池开发一个热稳定的接口.
- 为了提高储存能力和提高电池的安全性.
- 为了研究高的固体电解质介相对硬碳的影响.
主要方法:
- 在硬碳上构建一个双功能高的固体电解质接相.
- 介面结构和离子传输特性的描述.
- 对离子硬币电池和圆柱形电池进行电化学测试,包括循环稳定性和能量密度测量.
- 在滥用条件下评估袋式电池的热安全性.
主要成果:
- 高无机接口通过孔隙填充途径促进了深层离子储存,增加了容量.
- NaNi1/3Fe1/3Mn1/3O2/硬碳电池在800个循环后显示80%的容量保留.
- 一个3.7Ah 26700圆柱形电池实现了146.2Wh kg-1的能量密度.
- 热失控开始温度从52.4升至161.9°C,温度上升速度显著下降.
结论:
- 开发的高无机接口有效增强储存,并显著提高离子电池的热安全性.
- 这种方法为调节储存机制和减轻下一代能源储存中的安全风险提供了新的策略.
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