单晶导向用于超稳定的全固态电池.
Qidong Li1, Likun Chen1, Junyu Jiao2
1Shenzhen All-Solid-State Lithium Battery Electrolyte Engineering Research Center, Institute of Materials Research (IMR), Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
National science review
|January 29, 2026
概括
研究人员通过创建面向<110>的单晶金属来解决固态电池中的树问题. 这一创新确保了稳定的循环,并使实用,安全,高能量的全固态金属电池成为可能.
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
- 电池技术 电池技术
背景情况:
- 全固态金属电池 (ASLMB) 提供高能耗和安全性,但受到树形成的阻碍.
- 多晶中树突的根本原因尚不清楚,这阻碍了实际应用.
研究的目的:
- 阐明ASLMBs中树形成的基本机制.
- 开发一种抑制树突和增强电池稳定性的策略.
主要方法:
- 研究了由于不同原子剥离能量的多晶的异型脱皮.
- 使用 Li2Ga (131) 格子匹配模板设计面向 <110> 的单晶金属.
- 用工程阳极设计的ASLMB的评估电池性能和循环稳定性.
主要成果:
- 在多晶中确定了异型脱皮和空隙形成,作为树突和界面裂的原因.
- 面向110的单晶呈现层层的剥离/涂层,防止空洞形成和抑制树突.
- 面向<110>单晶的ASLMB在25°C下实现了超过10,000个周期的超长稳定性.
结论:
- 调节金属晶体的方向是对树石形成的一个基本解决方案.
- 面向110的单晶阳极可实现稳定且实用的ASLMB.
- 这一突破为高性能ASLMB的现实应用铺平了道路.
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