Cr (3+) modified LiMn2O4 spinel intercalation cathodes through oxalic acid assisted sol-gel method for lithium rechargeable batteries
To improve the cycle performance of eco-friendly and cost-effective spinel LiMn2O4 as the cathode of 4 V class Li secondary batteries, the spinel phase LiCrxMn2-xO4 (x = 0.01-0.20) was synthesized by soft chemistry method using oxalic acid as chelating agent. The present technique results in better homogeneity, good surface morphology, shorter heat treatment time, sub-micron sized particles, good agglomeration and better crystallinity. Electrochemical studies were monitored in the potential range of 3-4.5 V The present paper reveals that chromium substituted manganese spinel improves the structural stability of the parent material. (C) 2004 Elsevier Ltd. All rights reserved.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Issue Date
- 2005-01
- Language
- English
- Article Type
- Article
- Keywords
LICRYMN2-YO4 0-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-1; ION BATTERIES; HIGH-VOLTAGE; LI; INSERTION; OXIDES; PHASES
- Citation
MATERIALS RESEARCH BULLETIN, v.40, no.1, pp.177 - 186
- ISSN
- 0025-5408
- Appears in Collection
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