The Role of Charge Reactions in Cyclability of Lithium–Oxygen Batteries

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. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.