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Title: A basic thin film study of spinel LiMn{sub 2}O{sub 4} as a possible cathode material for lithium secondary cells

In a series of fundamental studies on the cathode active materials for a lithium secondary cell using geometrically well-defined sample electrodes, thin films of spinel LiMn{sub 2}O{sub 4} on a platinum plate were investigated in this work in an LiClO{sub 4}/propylene carbonate solution. These pyrolytically prepared films exhibit reversible extraction/insertion behavior for lithium under galvanostatic charge/discharge cycling between 4.3--3.5 V. The chemical diffusion coefficient of lithium in Li{sub x}Mn{sub 2}O{sub 4} determined by the galvanostatic intermittent titration technique (GITT) was in the order of 10{sup {minus}7}--10{sup {minus}10} cm{sup 2} {center_dot} s{sup {minus}1} within a spinel single-phase region of 0.6 < x < 1.0 and increased with increasing x.
Authors:
;  [1]
  1. Keio Univ., Kouhoku, Yokohama (Japan)
Publication Date:
OSTI Identifier:
162906
Report Number(s):
CONF-950412-
ISBN 1-55899-296-0; TRN: IM9604%%10
Resource Type:
Book
Resource Relation:
Conference: Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 17-21 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Materials for electrochemical energy storage and conversion -- Batteries, capacitors and fuel cells; Doughty, D.H. [ed.] [Sandia National Labs., Albuquerque, NM (United States)]; Vyas, B. [ed.] [AT and T Bell Labs., Murray Hill, NJ (United States)]; Takamura, Tsutomu [ed.] [Rikkyo Univ., Tokyo (Japan)]; Huff, J.R. [ed.] [Ballard Power Corp., Albuquerque, NM (United States)]; PB: 463 p.; Materials Research Society symposium proceedings, Volume 393
Publisher:
Materials Research Society, Pittsburgh, PA (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; LITHIUM OXIDES; CHEMICAL PREPARATION; MANGANESE OXIDES; ELECTRIC BATTERIES; CATHODES; VOLTAMETRY; PYROLYSIS; X-RAY DIFFRACTION; SCANNING ELECTRON MICROSCOPY; PLATINUM; LITHIUM PERCHLORATES; CARBONIC ACID ESTERS; LITHIUM; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; CURRENT DENSITY; DIFFUSION; CRYSTAL LATTICES; EXPERIMENTAL DATA