Preparation and characterization of gold-codeposited LiMn2O4 electrodes

Mi Ra Lim, Wan Il Cho, Kwang Bum Kim

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

Additive-free, gold-codeposited LiMn2O4 electrodes are prepared by embedding LiMn2O4 particles in an electrodeposited coating of metallic gold on platinum-coated quartz crystals for microgravimetric evaluation with an electrochemical quartz crystal microbalance. The chemical and structural characteristics of the electrodes are studied by Raman spectroscopy and X-ray diffraction and the electrochemical properties by cyclic voltammetry. Test cells are assembled with the gold-codeposited electrode as the working electrode, lithium foil as the counter electrode and a reference electrode. A 1.0 M lithium perchlorate (LiClO4), propylene carbonate (PC) solution is used as the electrolyte. Gold-codeposited LiMn2O4 electrodes prepared at deposition times of 4-8 min have a good adhesion of powder to the substrate. The cyclic voltammograms show little difference in the exchanged charge with cycling. Scanning electron microscopy shows fracture of the LiMn2O4 powders induced by a dimensional mismatch in the particles after cyclic voltammetric tests at high scan rates.

Original languageEnglish
Pages (from-to)168-176
Number of pages9
JournalJournal of Power Sources
Volume92
Issue number1-2
DOIs
Publication statusPublished - 2001 Jan

Bibliographical note

Funding Information:
This work was supported by Korean Institute of Science and Technology (KIST) under contract OOHV-051.

All Science Journal Classification (ASJC) codes

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

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