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A Quasi‐Solid‐State Li‐Ion Capacitor Based on Porous TiO 2 Hollow Microspheres Wrapped with Graphene Nanosheets
Author(s) -
Wang Faxing,
Wang Chun,
Zhao Yujuan,
Liu Zaichun,
Chang Zheng,
Fu Lijun,
Zhu Yusong,
Wu Yuping,
Zhao Dongyuan
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201602331
Subject(s) - materials science , graphene , supercapacitor , exfoliation joint , electrode , electrolyte , nanotechnology , quasi solid , electrochemistry , capacitor , ion , porosity , lithium (medication) , graphene foam , chemical engineering , graphene oxide paper , composite material , voltage , chemistry , physics , organic chemistry , endocrinology , dye sensitized solar cell , engineering , quantum mechanics , medicine
The quasi‐solid‐state Li‐ion capacitor is demonstrated with graphene nanosheets prepared by an electrochemical exfoliation as the positive electrode and the porous TiO 2 hollow microspheres wrapped with the same graphene nanosheets as the negative electrode, using a Li‐ion conducting gel polymer electrolyte. This device may be the key to bridging the gap between conventional lithium‐ion batteries and supercapacitors, meanwhile meeting the safety demands of electronic devices.