Fig. 2From: Permeable characteristics of surface film deposited on LiMn2O4 positive electrode revealed by redox-active indicatora Chronopotentiogram from the 0.2 C galvanostatic charge–discharge at the voltage range of 3.0-4.3 V (vs. Li/Li+) with Li/LMO cell and b Coulombic efficiency from the galvanostatic cyclingBack to article page