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固体电解质轻度烧结和表面被动化的协同效应,用于全固态电池中增强金属循环

Jinsong Zhang¹, Robin N Wullich¹, Thomas J Schmidt^1,2

¹PSI Center for Energy and Environmental Sciences, Paul Scherrer Institute, Villigen, CH-5232, Switzerland.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|January 8, 2026

概括

这项研究通过提高金属阳极稳定性,增强了固体电解质 (SE) 以制造更安全,高能全固态电池 (ASSB). 轻度烧结和化 (LiF) 被动化加倍了临界电流密度,延长了循环寿命.

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
电池技术电池技术

背景情况:

像Li6PS5Cl (LPSCl) 这样的阿吉罗狄特类固体电解质 (SE) 由于其高离子导电性和可加工性,对全固态电池 (ASSB) 是有前途的.
挑战包括树的透和不稳定的固体电解质间相 (SEI) 形成,限制高电流密度的循环稳定性.

研究的目的:

开发一种协同策略,以提高ASSB中基于LPSCl的固体电解质和金属阳极的性能.
为了改善自行车性能和安全,解决界面不稳定性和树突形成问题.

主要方法:

在80°C下轻度烧结LPSCl颗粒,以提高均性和密度.
通过电子束蒸发,在50μm的金属上沉积65nm化 (LiF) 消极化层.

主要成果:

优化的烧结改善了LPSCl颗粒的质量,增加了离子导电性.
LiF被动化降低了界面阻力,稳定了SEI的形成.
在对称电池中的临界电流密度从1.1到2.2mA cm−2.2.翻了一番.
使用NCM811阴极的全电池在1 mA cm−2.2.的1500个循环后显示了75%的容量保留.

结论:

轻度烧结和LiF被动化的结合方法有效地提高了LPSCl固体电解质和金属阳极的界面稳定性.
这一策略使下一代ASSB中的薄金属可靠循环,为高能量密度和安全电池铺平了道路.

关键词:

6PS5ClCl是一种所有固态电池都是固态电池.骑自行车表现的表现金属金属的使用情况烧结处理烧结处理表面被动化表面被动化

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