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Understanding Particle-Size-Dependent Electrochemical Properties of Li2MnO3‑Based Positive Electrode Materials for Rechargeable Lithium Batteries Naoaki Yabuuchi,§ Kei Kubota, Yoshinori Aoki, and Shinichi Komaba* Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan S Supporting Information *
ABSTRACT: Electrochemical properties of Li-excess electrode materials, Li1.2Co0.13Ni0.13Mn0.54O2, with different primary particle sizes are studied in Li cells, and phase transition behavior on continuous electrochemical cycles is systematically examined. Although the nanosize (1 μm), (b) submicrosize (
