Self-Supported Sheets-on-Wire CuO@Ni(OH)2/Zn(OH)2 Nanoarrays for High-Performance Flexible Quasi-Solid-State Supercapacitor
نویسندگان
چکیده
Transition metal hydroxides have attracted a lot of attention as the electrode materials for supercapacitors owing to their relatively high theoretical capacity, low cost, and facile preparation methods. However, intrinsic conductivity deteriorates high-rate performance cycling stability. Here, self-supported sheets-on-wire CuO@Ni(OH)2/Zn(OH)2 (CuO@NiZn) composite nanowire arrays were successfully grown on copper foam. The CuO backbone provided enhanced structural stability highly efficient electron-conducting pathway from active hydroxide nanosheets current collector. resulting CuO@NiZn battery-type supercapacitor application delivered capacity 306.2 mAh g−1 at density 0.8 A very stable 195.1 4 10,000 charge–discharge cycles. Furthermore, quasi-solid-state hybrid (qss HSC) was assembled with carbon, exhibiting 125.3 41.6 5000 qss HSC able deliver energy about 116.0 Wh kg−1. Even highest power 7.8 kW kg−1, an 20.5 kg−1 could still be obtained. Finally, 14 red light-emitting diodes lit up by single different bending states, showing good potential flexible storage applications.
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ژورنال
عنوان ژورنال: Processes
سال: 2021
ISSN: ['2227-9717']
DOI: https://doi.org/10.3390/pr9040680