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通过削来定制复合微结构以干处理硫化物为基础的固态电池阴极

Finn Frankenberg¹, Carina A Heck¹, Maximilian Kissel²

¹Technische Universität Braunschweig, Institute for Particle Technology, Volkmaroder Straße 5, 38104, Braunschweig, Lower Saxony, Germany.

Small (Weinheim an der Bergstrasse, Germany)

|September 5, 2025

概括

机械处理对固态电池阴极复合材料产生重大影响. 通过控制微观结构和异构接触,优化行星球磨提高了性能,但过度的能量可能是有害的.

科学领域:

材料科学
电化学
化学工程

背景情况:

固态电池对于下一代储能至关重要.
复合电极,结合固体电解质和活性材料,是SSB的关键组成部分.
机械加工对SSB复合材料性能的影响仍未得到充分研究.

研究的目的:

研究行星球磨削过程中机械过程参数对Li6PS5Cl和LiNi0.83Co0.11Mn0.06O2复合阴极的影响.
了解磨削如何影响微观结构,粒子大小和聚合物形成.
将磨削能量输入与电化学性能相关联.

主要方法:

星球磨砂 Li6PS5Cl 和 LiNi0.83Co0.11Mn0.06O2.
微结构分析 (颗粒大小,聚合物形成).
单独的元素模拟模型的微观结构演变.
电化学性能测试
干膜的生产和分析.

主要成果:

削会显著改变复合材料的微观结构,影响固体电解质颗粒大小和电解质活性物质的聚合.
通过增加异质接触密度,增加削能量最初会提高电化学性能.
由于Li6PS5Cl结晶体大小减少和LiNi0.83Co0.11Mn0.06O2应变增加,过多的磨削能量会对性能产生负面影响.
干薄膜生产可以部分补偿非优化削,但精确的控制至关重要.

结论:

机械加工,特别是行星球磨,是确定SSB复合材料正极的性能和性能的一个关键因素.
优化削参数对于最大化电化学性能至关重要.
了解和控制削能量,微观结构和材料特性之间的相互作用对于推进SSB技术至关重要.

关键词:

DEM模拟化学工艺工程微观结构过程结构属性固态电池

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