@article{oai:nagoya.repo.nii.ac.jp:00018695, author = {Muto, Shunsuke and Tatsumi, Kazuyoshi and Sasaki, Tsuyoshi and Kondo, Hiroki and Ohsuna, Tetsu and Horibuchi, Kayo and Takeuchi, Yoji}, issue = {8}, journal = {Electrochemical and Solid-State Letters}, month = {Jun}, note = {It is difficult to analyze the local concentrations and chemical states of lithium in lithium-ion secondary battery electrodes by microanalysis techniques based on transmission electron microscopy because the core excitation spectra of transition metals invariably overlap with the absorption/emission spectra of Li–K. We propose a promising analysis method that enables the spatial distribution of lithium with different chemical states from the original phase in a LiNiO2 -based positive electrode to be visualized. It employs a suite of spectrum imaging techniques including scanning transmission electron microscopy, electron energy-loss spectroscopy, and multivariate curve resolution. This method is successfully applied to a cross-sectioned positive electrode.}, pages = {A115--A117}, title = {Mapping of Heterogeneous Chemical States of Lithium in a LiNiO2-Based Active Material by Electron Energy-Loss Spectroscopy}, volume = {13}, year = {2010} }