A quasi-solid-state Li-ion capacitor based on porous TiO2 hollow microspheres wrapped with graphene nanosheets

Faxing Wang, Chun Wang, Yujuan Zhao, Zaichun Liu, Zheng Chang, Lijun Fu, Yusong Zhu, Yuping Wu, Dongyuan Zhao

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Abstract

The quasi-solid-state Li-ion capacitor is demonstrated with graphene nanosheets prepared by an electrochemical exfoliation as the positive electrode and the porous TiO2 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 bridge the gap between conventional lithium-ion batteries and supercapacitors, meanwhile meeting the safety demands of electronic devices.
Original languageEnglish
Pages (from-to)6207-6213
Number of pages7
JournalSmall
Volume12
Issue number45
DOIs
Publication statusPublished - 7 Dec 2016
Externally publishedYes

Keywords

  • Electrochemically exfoliated graphene
  • Gel polymer electrolytes
  • Hollow microspheres
  • Li-ion capacitors
  • TiO2

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