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. 2018 Jul 23;5(9):1700934. doi: 10.1002/advs.201700934

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© 2018 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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The electrochemical performance. a) Cycling performance of an Li‐S battery with a charging current of 15 C and a discharging current of 0.15 C. b) Typical discharge–charge profiles of an Li‐S battery with NE‐II at a charging current of 15 C and a discharging current of 0.15 C. Inset: charge and discharge cycles. The Li‐S battery with a bilateral SEI could be fully charged in minutes and discharged for over 3 h. c) The battery could be fully charged within minutes and power two LEDs for over 10 h. d–f) Charge/discharge storage properties of an Li‐S battery at 0.3 C. d) Long‐term cycling performance. e) The voltage–time profile of an Li‐S battery which was intermittently cycled with varying durations of storage for over 65 d showed no obvious deterioration. f) Typical discharge–charge profiles after storage for 480 h.