A high performance lithium-ion capacitor with both electrodes prepared from Sri Lanka graphite ore

  • Xiaoyu Gao
  • , Changzhen Zhan
  • , Xiaoliang Yu
  • , Qinghua Liang
  • , Ruitao Lv
  • , Guosheng Gai
  • , Wanci Shen
  • , Feiyu Kang
  • , Zheng Hong Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

27 Citations (Scopus)

Abstract

The natural Sri Lanka graphite (vein graphite) is widely-used as anode material for lithium-ion batteries (LIBs), due to its high crystallinity and low cost. In this work, graphitic porous carbon (GPC) and high-purity vein graphite (PVG) were prepared from Sri Lanka graphite ore by KOH activation, and high temperature purification, respectively. Furthermore, a lithium-ion capacitor (LIC) is fabricated with GPC as cathode, and PVG as anode. The assembled GPC//PVG LIC shows a notable electrochemical performance with a maximum energy density of 86 W·h·kg-1 at 150 W·kg-1, and 48 W·h·kg-1 at a high-power density of 7.4 kW·kg-1. This high-performance LIC based on PVG and GPC is believed to be promising for practical applications, due to its low-cost raw materials and industrially feasible production.

Original languageEnglish
Article number414
JournalMaterials
Volume10
Issue number4
DOIs
Publication statusPublished - 14 Apr 2017
Externally publishedYes

Keywords

  • Graphitic porous carbon
  • KOH activation
  • Lithium-ion capacitor
  • Sri Lanka graphite

ASJC Scopus subject areas

  • General Materials Science

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