Fig. 4From: Permeable characteristics of surface film deposited on LiMn2O4 positive electrode revealed by redox-active indicatora Potential diagram of electrochemical response. b Time vs. OCV plot from Li/Pt/LMO/Li four electrode cell and time vs. current density recorded at 3.0 V (vs. Li/Li+) polarized Pt mesh electrode. c Schematic diagram of the results observed by redox-indicator analysisBack to article page