Flexible Solid-State Supercapacitors Based on Carbon Nanoparticles/MnO<sub>2</sub> Nanorods Hybrid Structure
Longyan Yuan(Huazhong University of Science and Technology), Xihong Lu(Sun Yat-sen University), Xu Xiao(Wuhan National Laboratory for Optoelectronics), Teng Zhai(Huazhong University of Science and Technology), Junjie Dai(Wuhan National Laboratory for Optoelectronics), Fengchao Zhang(Wuhan National Laboratory for Optoelectronics), Bin Hu(Wuhan National Laboratory for Optoelectronics), Xue Wang(Chongqing University), Li Gong(Sun Yat-sen University), Jian Chen(Sun Yat-sen University), Chenguo Hu(Chongqing University), Yexiang Tong(Sun Yat-sen University), Jun Zhou(Huazhong University of Science and Technology), Zhong Lin Wang(Huazhong University of Science and Technology)
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Abstract
A highly flexible solid-state supercapacitor was fabricated through a simple flame synthesis method and electrochemical deposition process based on a carbon nanoparticles/MnO(2) nanorods hybrid structure using polyvinyl alcohol/H(3)PO(4) electrolyte. Carbon fabric is used as a current collector and electrode (mechanical support), leading to a simplified, highly flexible, and lightweight architecture. The device exhibited good electrochemical performance with an energy density of 4.8 Wh/kg at a power density of 14 kW/kg, and a demonstration of a practical device is also presented, highlighting the path for its enormous potential in energy management.
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