ZrO2 -Modified LiMn2 O4 Thin-Film Cathodes Prepared by Pulsed Laser Deposition

Dong Wook Shin, Ji Won Choi, Jae Pyoung Ahn, Won Kook Choi, Yong Soo Cho, Seok Jin Yoon

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16 Citations (Scopus)

Abstract

The study on the influences of ZrO2 addition in LiMn2 O4 thin films as cathodes was driven by the need to improve the physical and electrochemical performances of thin-film lithium batteries. The films of x ZrO2 - LiMn2 O4 at x=0.025 possessed a high capacity retention of > 82% at 4C after 130 cycles, compared to 68% at x=0, due to the formation of amorphous ZrO2 on the grain boundary and surface out of the LiMn2 O4 matrix via the pulsed laser deposition. The ZrO2 modification decreased the charge-transfer resistance (Rct) and unwanted phase transition of the LiMn2 O 4 cathode film.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume157
Issue number5
DOIs
Publication statusPublished - 2010 Apr 27

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All Science Journal Classification (ASJC) codes

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

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