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

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:162906

Miura, Takashi; Kishi, Tomiya ^[1]

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1. Keio Univ., Kouhoku, Yokohama (Japan)

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.

• OSTI ID: 162906
• Report Number(s): CONF-950412--; ISBN 1-55899-296-0
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
CARBONIC ACID ESTERS
CATHODES
CHEMICAL PREPARATION
CRYSTAL LATTICES
CURRENT DENSITY
DIFFUSION
ELECTRIC BATTERIES
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
EXPERIMENTAL DATA
LITHIUM
LITHIUM OXIDES
LITHIUM PERCHLORATES
MANGANESE OXIDES
PLATINUM
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
VOLTAMETRY
X-RAY DIFFRACTION