Boron-substituted manganese spinel oxide cathode for lithium ion battery

Citation
A. Veluchamy et al., Boron-substituted manganese spinel oxide cathode for lithium ion battery, SOL ST ION, 143(2), 2001, pp. 161-171
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
143
Issue
2
Year of publication
2001
Pages
161 - 171
Database
ISI
SICI code
0167-2738(200106)143:2<161:BMSOCF>2.0.ZU;2-2
Abstract
An attempt has been made to synthesize boron-substituted cubic spinel throu gh solid state (SS) and solution route (SR) techniques. The synthesized spi nels have been examined for their physical and electrochemical characterist ics through ex situ-X-ray diffractometry (XRD) and SEM, as well as by charg e-discharge cycling and diffusion coefficient measurements. X-ray diffracti on reveals boron elimination from boron-substituted spinel (SR-B spinel) re sulting in phase splitting to lithium berate glass formation and parent cub ic spinel when subjected to heating at and above 600 degreesC. Synthesis th rough SR with precursor material calcined at 500 degreesC only provides hig h discharge capacity with good cyclability. The measurement of diffusion co efficient of lithium supports that boron got substituted at 16d site in Fd (3) over barm spinel structure. This paper discusses the mechanism underlyi ng the stability of boron-substituted spinel and the suitability of LiB1/9M n17/9O4 as a promising positive electrode candidate for lithium ion battery . (C) 2001 Elsevier Science B.V. All rights reserved.