期刊
ADVANCED ENERGY MATERIALS
卷 6, 期 19, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201600813
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类别
资金
- State Key 973 Program of PRC [2011CB605704]
- National Natural Science Foundation of China [U1201241, 51372041, 51202034, 51201035]
Two kinds of free-standing electrodes, reduced graphene oxide (rGO)-wrapped Fe-doped MnO2 composite (G-MFO) and rGO-wrapped hierarchical porous carbon microspheres composite (G-HPC) are fabricated using a frozen lake-inspired, bubble-assistance method. This configuration fully enables utilization of the synergistic effects from both components, endowing the materials to be excellent electrodes for flexible and lightweight electrochemical capacitors. Moreover, a nonaqueous HPC-doped gel polymer electrolyte (GPE-HPC) is employed to broad voltage window and improve heat resistance. A fabricated asymmetric supercapacitor based on G-MFO cathode and G-HPC anode with GPE-HPC electrolyte achieves superior flexibility and reliability, enhanced energy/power density, and outstanding cycling stability. The ability to power light-emitting diodes also indicates the feasibility for practical use. Therefore, it is believed that this novel design may hold great promise for future flexible electronic devices.
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