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Author Chitra, S. ♦ Kalyani, P. ♦ Mohan, T. ♦ Gangadharan, R.
Source CSIR-Central Electrochemical Research Institute
Content type Text
Publisher Kluwer Academic Publishers
File Format PDF
Copyright Year ©1999
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Electrochemical Power Sources
Abstract In this paper, we report the synthesis, the physical properties and the electrochemical features of the lithium nickel-cobalt oxide cathode materials prepared by a combustion method at moderate temperature. Structural properties were investigated by X-ray diffraction, Raman scattering and FTIR. Spectroscopic measurements show unambiguously that the �nal product is identi�ed as a modi�ed-spinel structure (Fd3m space group) with the stoichiometric formula Li2 Ni0:5Co0:5 2O4. Electrochemical cells Li Li2 Ni0:5Co0:5 2O4 were fabricated using an organic electrolyte and their performances were tested. For a modi�ed-spinel Li2 Ni0:5Co0:5 2O4 structure the chemical diffusion coef�cient of Li ions is around 10 �y10 cm2s, which is lower than for a layered LiNi0:5Co0:5O2 host matrix.
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1999-01-01
Journal PeerReviewed