期刊
ACTA MATERIALIA
卷 89, 期 -, 页码 153-162出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2015.01.074
关键词
Nanoindentation; Atomic force microscopy (AFM); Acoustic methods; Elastic properties; Li-ion battery
资金
- European Commission [290158]
- German public funded project ReLiOn
Elastic and hardness properties of LiMn2O4 particles extracted from commercially available Li-ion batteries are investigated under different States of Charge (SoC). Instrumented indentation was used for quantitative measurements. It was found that the particles become stiffer for increasing SoC, ranging from 87 GPa (0% SoC) to 104 GPa (100% SoC). Nanoindentation could also detect dissimilar properties between particles of a same cathode. As its spatial resolution is limited, atomic force acoustic microscopy (AFAM) was used to generate stiffness maps. By combining it with micro-Raman spectroscopy as well as Electron Back-Scattered Diffraction (EBSD), elastic isotropy and homogeneity within single particles were found. On the other hand, different neighboring particles present different states of lithiation and stiffnesses. For reference, a {1 1 1} LiMn2O4 wafer was also synthesized and characterized. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据