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. 2019 Apr 24;6(4):181978. doi: 10.1098/rsos.181978

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© 2019 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 7. — Electrochemical characteristics of rGO-250 in Li, Na and K half-cells, respectively, within the 0.02–2.0 V potential window. (a) Cycle life and (b) C-rate performance.