Activated carbon felts with exfoliated graphene nanosheets for flexible all-solid-state supercapacitors |
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Authors: | Zifang Zhao Xiaojun Wang Minjie Yao Lili Liu Zhiqiang Niu Jun Chen |
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Institution: | Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education), Renewable Energy Conversion and Storage Center(ReCast), College of Chemistry, Nankai University, Tianjin 300071, China; Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China |
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Abstract: | The recent development of portable electronics promotes the growing demand for flexible energy storage devices. Supercapacitors are promising candidates due to their high power density. Therefore, flexible supercapacitors are desired. Here, the porous activated carbon felts (ACFs) with exfoliated graphene nanosheets and rich oxygen-containing groups were fabricated by a facile thermal treatment strategy. Such ACFs can act as the flexible electrodes of all-solid-state supercapacitors directly without the use of binder and conductive materials. They exhibit excellent electrochemical properties, such as high specific areal capacitance, superior rate ability and long-term cycling stability. Moreover, the fabricated flexible all-solid-state supercapacitors based on ACFs deliver stable electrochemical performance under different bending states. |
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Keywords: | Carbon felts Graphene Flexible Supercapacitors Thermal treatment |
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