Understanding oxygen reactions in aprotic Li-O<sub>2</sub>batteries

Understanding oxygen reactions in aprotic Li-O₂batteries

Ma Shunchao^{1, 2, †,}, Zhang Yelong^{1, 2, †,}, Cui Qinghua^{1, 2}, Zhao Jing^{1, 2}, Peng Zhangquan^{1, ‡,}

(a) CVs showing O₂reduction and re-oxidation in 0.5 M NBu₄TFSI (green, right ordinate) and 1 M LiTFSI (blue, left ordinate). (b) Linear sweep voltammetry at 0.5 mV/s using the DEMS cell (XC 72 carbon cathode, 1 M LiTFSI in DME). The solid line is the current, and the points are O₂(and CO₂) measured by the DEMS. e^–/O₂was determined by comparing the current to the moles of O₂consumed or evolved.^[27]