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. 2020 Apr 29;11:2077. doi: 10.1038/s41467-020-15991-6

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Illustration of the components of a flexible supercapacitor based on MrGO-AD sheets. b Cyclic voltammetry (CV) curves at scan rates of 10 to 1000 mV s⁻¹ for the MrGO-AD supercapacitor. c GCD curves for the MrGO-AD sheet supercapacitor. d Volumetric capacitance of the MrGO-AD sheet supercapacitor for current densities from 1.0 to 8.6 A cm⁻³. e Capacitance retention during the cycling of a MrGO-AD supercapacitor. f Volumetric energy density and power density of the MrGO-AD supercapacitor compared with alternative energy storage systems.