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. 2015 May 18;5:9771. doi: 10.1038/srep09771

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(a) Galvanostatic charge-discharge curves of MnO₂@SiNWs hybrid in Li-ion doped ionic liquid electrolyte at various current densities. (b-c) The areal, volume and specific capacitances of the MnO₂@SiNWs symmetric device measured at different current densities. (d) Plot of areal energy density versus areal power density of MnO₂@SiNWs device with comparison to other reported values. (e) Plot of volumetric power and energy densities of the MnO₂@SiNWs device comparing with other energy storage devices. (f) Variation of areal capacitance and capacity retention with number of cycles for 5000 cycles.