High-performance all-solid-state asymmetric stretchable supercapacitors based on wrinkled MnO2/CNT and Fe2O3/CNT macrofilms
| العنوان: | High-performance all-solid-state asymmetric stretchable supercapacitors based on wrinkled MnO2/CNT and Fe2O3/CNT macrofilms |
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| المؤلفون: | Bingqing Wei, Taoli Gu |
| المصدر: | Journal of Materials Chemistry A. 4:12289-12295 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Supercapacitor, Materials science, Renewable Energy, Sustainability and the Environment, business.industry, Stretchable electronics, Nanotechnology, 02 engineering and technology, General Chemistry, Electrolyte, Carbon nanotube, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Capacitance, Energy storage, 0104 chemical sciences, law.invention, law, Electrode, Optoelectronics, General Materials Science, 0210 nano-technology, business, Power density |
| الوصف: | High-performance stretchable energy storage devices are urgently needed due to the rapid development of portable, wearable, and stretchable electronics. However, most of the stretchable single-cell energy storage devices suffer from a relatively low operating voltage and thus a low energy density. Here, we report an all-solid-state asymmetric stretchable supercapacitor (ASS) with high energy density using the wrinkled manganese dioxide (MnO2)/carbon nanotube (CNT) hybrid film as a positive electrode and the wrinkled iron oxide (Fe2O3)/CNT composite film as a negative electrode in a neutral Na2SO4–poly(vinyl alcohol) (Na2SO4/PVA) gel electrolyte. Due to the high specific capacitance and excellent rate performance of MnO2/CNTs and Fe2O3/CNTs, as well as the synergistic effects of the two electrodes with an optimized potential window, the asymmetric stretchable cell exhibits superior electrochemical and mechanical performances. An optimized ASS can be reversibly cycled in the voltage window between 0 and 2 V, and shows a supreme energy density of 45.8 W h kg−1 (corresponding power density of 0.41 kW kg−1). Additionally, the ASS also exhibits exceptional cycling stability and durability, with 98.9% specific capacitance retained even after 10 000 electrochemical cycles at multiple strains. These encouraging results show its great potential in developing stretchable energy storage devices with high energy and power densities for wearable and implantable electronic applications. |
| تدمد: | 2050-7496 2050-7488 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::c9feaf1c07f38ce8588a7ec303fad858 https://doi.org/10.1039/c6ta04712b |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........c9feaf1c07f38ce8588a7ec303fad858 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20507496 20507488 |
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