Li Mapping Using EELS

Jun Kikkawa, Tomoki Akita, Mitsuharu Tabuchi, Masahiro Shikano, Kuniaki Tatsumi and Masanori Kohyama

Abstract: Industrial and academic demands of electron microscopy analyses of materials for lithium (Li) ion batteries have increased rapidly. Most important roles of electron microscopy in research and development of the battery are to clarify phase changes in electrode materials from micrometer to nanometer and atomic scales in real space. In this paper, we review an application of Li mapping by EELS into a positive electrode material and remark several points to be considered for quantification of Li content. We also refer to electron irradiation effects on electrode materials for Li ion batteries.

Key words: Lithium ion battery, EELS, Li mapping