A Quasi-Solid-State Li-Ion Capacitor Based on Porous TiO2Hollow Microspheres Wrapped with Graphene Nanosheets.
The quasi-solid-state Li-ion capacitor is demonstrated with graphene nanosheets prepared by an electrochemical exfoliation as the positive electrode and the porous TiO2hollow 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.
College of Energy and Institute for Electrochemical Energy Storage, Nanjing Tech University, Jiangsu Province, Nanjing, 211816, China.
Faxing
F
Wang
Laboratory of Advanced Materials, Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
Chun
C
Wang
Laboratory of Advanced Materials, Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
Yujuan
Y
Zhao
College of Energy and Institute for Electrochemical Energy Storage, Nanjing Tech University, Jiangsu Province, Nanjing, 211816, China.|Laboratory of Advanced Materials, Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
Zaichun
Z
Liu
Laboratory of Advanced Materials, Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
Zheng
Z
Chang
College of Energy and Institute for Electrochemical Energy Storage, Nanjing Tech University, Jiangsu Province, Nanjing, 211816, China.
Lijun
L
Fu
College of Energy and Institute for Electrochemical Energy Storage, Nanjing Tech University, Jiangsu Province, Nanjing, 211816, China.
Yusong
Y
Zhu
College of Energy and Institute for Electrochemical Energy Storage, Nanjing Tech University, Jiangsu Province, Nanjing, 211816, China.|Laboratory of Advanced Materials, Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
Yuping
Y
Wu
Laboratory of Advanced Materials, Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
Dongyuan
D
Zhao
Li-ion capacitors; TiO2; electrochemically exfoliated graphene; gel polymer electrolytes; hollow microspheres