Xiangxin Guo and Ning Zhao The Role of Charge Reactions in Cyclability of Lithium–Oxygen Batteries Advanced Energy Materials 3
The significant influence of product removal upon charge on cyclability of Li–O2 batteries with carbon electrodes is demonstrated. Optimal charge cut-off voltages lead to 32 cycles for the tetraethylene glycol dimethyl ether (TEGDME)-based batteries, and 40 cycles for the N-methyl-N-propylpiperidinium bis(trifluoromethansulfony) imide (PP13TFSI)-based ones without degradation of the retained discharge capacity. Further extension of cycle operation would need introduction of catalysts that can avoid by-product accumulation.
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