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Author:

Deng, Jianqiu (Deng, Jianqiu.) | Lu, Zhouguang (Lu, Zhouguang.) | Chung, C. Y. (Chung, C. Y..) | Han, Xiaodong (Han, Xiaodong.) (Scholars:韩晓东) | Wang, Zhongmin (Wang, Zhongmin.) | Zhou, Huaiying (Zhou, Huaiying.)

Indexed by:

EI Scopus SCIE

Abstract:

Li4Ti5O12 thin film electrodes are successfully deposited on Pt/Ti/SiO2/Si substrates by pulsed laser deposition (PLD) technique. The microstructure and morphology of Li4Ti5O12 thin films are characterized by XRD and ESEM. The electrochemical properties of Li4Ti5O12 thin film electrodes are evaluated by galvanostatic cycling test. The kinetic behavior of lithium ions in Li4Ti5O12 thin film electrodes is also conducted using cyclic voltammetry (CV), galvanostatic intermittent titration technique (GITT), and electrochemical impedance spectroscopy (EIS). Li4Ti5O12 thin film electrodes show favorable specific capacities and cycle performance. The chemical diffusion coefficients are found to be in a range of 10(-15) to 10(-12) cm(2) s(-1) determined by GITT method. The kinetic parameters obtained from impedance spectra as a function of the cell voltage are investigated in details. The decrease of the charge-transfer resistance (R-ct) can be explained by the two-phase transition during lithium insertion into Li4Ti5O12. (C) 2014 Elsevier B.V. All rights reserved.

Keyword:

Electrochemical performance Lithium ion batteries Diffusion kinetics Anode materials Thin film

Author Community:

  • [ 1 ] [Deng, Jianqiu]Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China
  • [ 2 ] [Wang, Zhongmin]Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China
  • [ 3 ] [Zhou, Huaiying]Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China
  • [ 4 ] [Lu, Zhouguang]City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
  • [ 5 ] [Chung, C. Y.]City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
  • [ 6 ] [Han, Xiaodong]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100022, Peoples R China

Reprint Author's Address:

  • [Deng, Jianqiu]Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China

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Source :

APPLIED SURFACE SCIENCE

ISSN: 0169-4332

Year: 2014

Volume: 314

Page: 936-941

6 . 7 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:341

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 24

SCOPUS Cited Count: 25

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 10

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