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在全固态电池中添加剂衍生的阴极表面修改:二酸和二酸和二酸衍生的涂层层的影响

Myeong Jun Joo¹, Minseong Kim², Sujong Chae³

¹Department of Advanced Materials Engineering, Graduate School Kyonggi University, 154-42, Gwanggyosan-Ro, Yeongtong-Gu, Suwon-Si, Gyeonggi-Do 16227, Republic of Korea.

ACS applied materials & interfaces

|December 16, 2023

概括

使用二酸 (LiDFP) 和二氧化 (LiDFOB) 涂层的表面修饰稳定了硫化基全固态电池 (ASSB) 中的阴极电解质接口. LiDFP涂层表现出卓越的性能和耐用性,推动了ASSB的商业化.

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:

基于硫化物的电解质为全固态电池 (ASSB) 提供高导电性.
阴极-硫化物电解质接口的不稳定性阻碍了ASSB的商业化.
表面修改是提高接口稳定性的关键策略.

研究的目的:

开发使用LiDFP和LiDFOB添加剂为硫化物基ASSB的稳定阴极涂层.
研究这些涂料对电化学性能和接口稳定性的影响.
为了确定最佳的涂层条件以提高电池性能.

主要方法:

使用LiDFP和LiDFOB通过低温热处理制造正极涂层.
用涂层和未涂层阴极对全固态电池进行电化学测试.
使用X射线光电子谱和高分辨率传输电子显微镜进行表面表征.

主要成果:

与未涂层的阴极相比,LiDFP和LiDFOB涂层显著提高了电化学性能.
在其相变温度附近处理的LiDFP涂层阴极,表现出最佳的放电能力,速率能力和周期稳定性.
涂层阴极显示了减少的界面阻抗和最小化的副作用反应,导致较低的表面退化.

结论:

使用LiDFP和LiDFOB的低温热处理有效地为ASSBs创建稳定的阴极涂层.
DFP涂层在提高硫化物基ASSB的稳定性和性能方面表现出非常有前景.
这种表面改造技术为高性能ASSB的商业化提供了可行的途径.

关键词:

添加剂的添加剂是什么所有固态电池都是固态电池.阴极阴极是指一个阴极.涂层涂层是一种涂层.表面的修改表面的修改

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