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

12 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

  • Materials Science(all)

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