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. 2019 Feb 25;11:15. doi: 10.1007/s40820-019-0247-3

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 7 — a CV profiles of the MnO/CoMn₂O₄ ⊂ GN electrodes at different scan rates with the potential range between 0.01 and 3.0 V. b The fitted lines and ln(i_p) versus ln(v) plots at different oxidation and reduction states. c The percentages of pseudocapacitive contribution at different scan rates. d Pseudocapacitive (red) and diffusion-controlled (blue) contribution to the charge storage of MnO/CoMn₂O₄ ⊂ GN at 0.8 mV s⁻¹. (Color figure online)