Synthesis and electrochemical studies of spinel phase LiMn{sub 2}O{sub 4} cathode materials prepared by the Pechini process
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Materials Science and Engineering
- Univ. of California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering
LiMn{sub 2}O{sub 4}-based spinels are of great interest as positive electrode materials for lithium-ion batteries. The authors describe here what is believed to be the first synthesis of these materials using the Pechini process, a low temperature synthetic method that often yields inorganic oxides of excellent phase purity and well-controlled stoichiometry. Using this process, it has been possible to synthesize phase-pure crystalline spinel LiMn{sub 2}O{sub 4} by calcining the appropriate polymeric precursors in air at 250 C for several hours. The influence of different firing temperatures and the effect of substituting a small amount of Mn with Ni have also been explored. Electrochemical studies show that the Pechini-synthesized materials appear to offer not only high quality performance but also significant analytical advantages which allows one to understand the structural mechanism of Li intercalation.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 220868
- Journal Information:
- Journal of the Electrochemical Society, Vol. 143, Issue 3; Other Information: PBD: Mar 1996
- Country of Publication:
- United States
- Language:
- English
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