集束イオンビーム飛行時間型二次イオン質量分析計（FIB-TOF-SIMS）によるコバルト酸リチウムと酸化コバルトのスペクトル比較

抄録

  Lithium ion batteries will be important to the future generations for use as clean energy-storage devices. However, the surface chemical reaction mechanism of the electrode has not been revealed to date. In case of Li-ion batteries, CoO and/or Co₃O₄ are considered as the degradation materials in LiCoO₂ cathode. In order to estimate the chemical state of cathode material, the comparison of secondary ion spectrum of LiCoO₂, CoO and Co₃O₄ were made. In this study, secondary ion analyses of cobalt compounds were performed using a laboratory-made TOF-SIMS apparatus.