A high performance Li-ion capacitor constructed with Li4Ti5O12/C hybrid and porous graphene macroform

Ling Ye, Qinghua Liang, Yu Lei, Xiaoliang Yu, Cuiping Han, Wanci Shen, Zheng Hong Huang, Feiyu Kang, Quan Hong Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

112 Citations (Scopus)

Abstract

A Li-ion capacitor (LIC) is constructed with Li4Ti5O12/C hybrid as the negative electrode and 3D porous graphene macroform (PGM) as the positive electrode. After optimizing the mass ratio (m+/m-) of the electrode materials with the value of 2, the as-fabricated LIC delivers a maximum energy density of 72 Wh kg-1 with the power density of 650 W kg-1 in a voltage range of 1.0-3.0 V. Furthermore, the energy density of the LIC reaches 40 Wh kg-1 even at a high power density of 8.3 kW kg-1. More significantly, the LIC exhibits a good cycling stability with the retention of 65% after 1000 cycles at a high current density of 10 A g-1, suggesting great potential application in energy storage of the LIC.

Original languageEnglish
Pages (from-to)174-178
Number of pages5
JournalJournal of Power Sources
Volume282
DOIs
Publication statusPublished - 15 May 2015
Externally publishedYes

Keywords

  • Li-ion capacitor
  • LiTiO/C hybrid
  • Porous graphene macroform

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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