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. 2015 Dec 18;5:18185. doi: 10.1038/srep18185

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(a) Galvanostatic charging/discharging curves of wood-pile carbon pattern electrodes at a current density of 1 mA/cm². (b) Specific capacitances at various current densities (c) Capacitance retention over charging/discharging cycles at a current density of 1 mA/cm².