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通过在Li₇La₃Zr₂O₁₂中引入压缩压力,通过使用离子植入来偏移状物

Florian Flatscher^1,2, Juraj Todt³, Manfred Burghammer⁴

¹Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, 7491, Norway.

Small (Weinheim an der Bergstrasse, Germany)

|November 10, 2023

概括

离子植入会在固体电解质中产生压力,从而防止固态电池中的树生长. 这种技术通过偏移树突和裂,为更安全,高性能电池提供了一条道路.

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
固态电池固态电池是什么

背景情况:

树突是固态电池开发的一个主要障碍,导致短路.
固体电解质的缺陷有助于金属的透和树的传播.

研究的目的:

研究离子植入作为一种方法,以减轻在固体电解质中的树形成.
将受控的压力状态引入Li$_{6.4}$La$_{3}$Zr_{1.4}$Ta$_{0.6}$O$_{12}$ (LLZO) 中以阻止树突.

主要方法:

在LLZO中植入Ag离子植入.
使用原子探头断层扫描,电子显微镜和纳米X射线衍射进行表征.
通过纳米沉积和静电循环进行机械测试.

主要成果:

Ag离子植入深度高达1微米,导致无形化到650-700nm.
在近地表面区域产生了显著的压力应力状态 (高达-700 MPa).
诱导的应力区和微观结构变化有效地转移了机械裂和树突.

结论:

离子植入是一种可行的技术,用于设计固体电解质.
这种方法可以为先进的固态电池制造"无质"固体电解质.
这项研究展示了一种新的方法来提高固态电池的安全性和性能.

关键词:

LLZOZO LLZO 在线观看树突 (dendrites) 是一种树突.离子植入植入的离子植入.固体电解质是一种固体电解质.固态电池固态电池是什么

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