Novel two-dimensional In2O3 nanodiscs for high-rate performance of solid-state symmetric supercapacitors

초록

In this study, we report a two-dimensional In2O3 nanodiscs for solid-state symmetric supercapacitors (SSCs) synthesized by one-step hydrothermal method. It exhibits high specific capacitance of 622 F g(-1) at 3 A g(-1) and 412 F g(-1) at 7 A g(-1) based on individual electrodes. Further, the SSCs demonstrate a wide potential window of 1.0 V, excellent specific capacitance of 89.7 F g(-1) at a current density of 1 A g(-1), a high energy density of 12.5Wh kg(-1) at a power density of 500Wkg(-1), and an outstanding stability with similar to 97% rate retention after 10,000 cycles. The superior performances of the SSCs with 2D In2O3 nanodiscs material suggest their potential opportunity for future electronic applications. (C) 2018 Elsevier B.V. All rights reserved.

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