A Quasi-Solid-State Sodium-Ion Capacitor with High Energy Density
Journal article published in 2015 by
Faxing Wang 
,
Xiaowei Wang ,
Zheng Chang,
Xiongwei Wu,
Xiang Liu,
Lijun Fu,
Yusong Zhu,
Yuping Wu,
Wei Huang
,
Xiaowei Wang ,
Zheng Chang,
Xiongwei Wu,
Xiang Liu,
Lijun Fu,
Yusong Zhu,
Yuping Wu,
Wei Huang
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Abstract
A quasi-solid-state sodium-ion capacitor is demonstrated with nanoporous disordered carbon and macroporous graphene as the negative and positive electrodes, respectively, using a sodium-ion-conducting gel polymer electrolyte. It can operate at a cell voltage as high as 4.2 V with an energy density of record high 168 W h kg(-1) .