Electrochemical performance of LiNi 1/3Co 1/3Mn 1/3O 2 thin film electrodes prepared by pulsed laser deposition

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jianqiu Deng
  • Liujiang Xi
  • Lihua Wang
  • Zhongmin Wang
  • Xiaodong Han
  • Huaiying Zhou

Detail(s)

Original languageEnglish
Pages (from-to)491-497
Journal / PublicationJournal of Power Sources
Volume217
Publication statusPublished - 1 Nov 2012

Abstract

Layered LiNi 1/3Co 1/3Mn 1/3O 2 thin film electrodes are successfully prepared by pulsed laser deposition technique and post-annealed. The microstructure of the thin films is characterized by X-ray diffraction, field emission scanning electron microscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. The electrochemical performance of the thin film electrodes is evaluated by cyclic voltammetry and galvanostatic charge-discharge measurements. The kinetics of Li diffusion in the thin film electrodes are investigated by galvanostatic intermittent titration technique. The annealed thin films exhibit a partially amorphous structure. The electrochemical performance of LiNi 1/3Co 1/3Mn 1/3O 2 thin film electrodes depends on the annealing temperature, composition and thickness. The thin film electrodes deposited for 30 min with the annealing temperature of 450 °C deliver the best electrochemical performance, including high capacities, good cycle performance and rate capability. The initial discharge capacity of the thin film electrodes is 177 mAh g -1 measured at a rate of 0.1C in the voltage range of 2.8-4.5 V. The capacity retention ratio is 92% after 25 cycles at 0.5C rate. The chemical diffusion coefficients of lithium ion in the thin film electrodes are in the range of 10 -9-10 -10 cm 2 s -1. © 2012 Elsevier B.V. All rights reserved.

Research Area(s)

  • Electrochemical performance, Lithium ion batteries, Pulse laser deposition, Thin film electrode

Citation Format(s)

Electrochemical performance of LiNi 1/3Co 1/3Mn 1/3O 2 thin film electrodes prepared by pulsed laser deposition. / Deng, Jianqiu; Xi, Liujiang; Wang, Lihua; Wang, Zhongmin; Chung, C. Y.; Han, Xiaodong; Zhou, Huaiying.

In: Journal of Power Sources, Vol. 217, 01.11.2012, p. 491-497.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review