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发现高度无序的无形-花纹玻璃陶的网络修饰器

Yuntong Zhu¹, Ellis R Kennedy², Bengisu Yasar²

¹Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.

Advanced materials (Deerfield Beach, Fla.)

|January 30, 2024

概括

高度无序的无形Li7La3Zr2O12 (aLLZO) 为固态电池中的离子 (Li+) 运输提供了一个无谷物边界的途径. 兰作为网络修饰剂,增强这些有前途的电池材料中的混乱和离子导电性.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
电化学电化学电化学

背景情况:

无形Li7La3Zr2O12 (aLLZO) 是先进电池的一个有前途的固体电解质.
它的无粒边界结构和广泛的电化学稳定性是有利的.
了解结构-属性关系是优化Li+运输的关键.

研究的目的:

研究 (La) 作为无形Li7La3Zr2O12.12中的网络修饰剂的作用.
阐明La度如何影响局部结构和Li+运输.
探索aLLZO在低成本,可持续固态电池方面的潜力.

主要方法:

无形Li7La3Zr2O12相与不同La度的合成.
结构分析以确定局部建筑单元 (LBU) 和粘合环境.
结构障碍与Li+运输特性之间的相关性.

主要成果:

兰 (La) 被确定为主要的网络修饰器,而Zr和Li则作为网络形成器.
增加的La度会导致更长的Zr-O和La-O键距离,增强结构障碍.
这种障碍促进了无形结构内的更有效的Li+运输.
aLLZO具有广泛的电化学稳定性,并且可以在相对较低的温度下进行合成.

结论:

兰度是调整LLZO.aLL的乱和Li+导电性的关键因素.
这些发现为设计新型无形Li+电解质提供了途径.
aLLZO为下一代固态电池提供了一种可行的,具有成本效益的材料.

关键词:

石榴石是一种石榴石.Li7La3Zr2O1212 的使用方法液体导电玻璃陶制品的使用情况无形氧化物是一种无形氧化物.固态电池固态电池是什么

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