Journal article
Evaluation of Fuels for the Synthesis of Li2CoMn3O8
IONICS, Vol.8, pp.447-452
2002
DOI: 10.1007/BF02376060
Abstract
Li2CoMn3O8, a 5 V cathode material used in rechargeable lithium batteries, has been synthesized by adopting a novel technique of using fuels along with the nitrate reactants. The effect of the fuel on the synthesis of Li2CoMn3O8 has been analyzed in terms of the physical and electrochemical properties of the final product formed by various methods such as solid-state carbonate fusion and the solution route using acetate and nitrate precursors. Powder X-ray diffraction FT IR spectrum, particle size, surface area and SEM analysis were carried out. The combustion method, also known as self-propagating high temperature (SPHT) method, has been employed in the present study by using nitrate mixtures of the respective salts and a nitrogeneous fuel (urea or glycine) at a temperature of 300 degrees C for 3 hrs. The nitrate reactants without the addition of fuel gave only a deliquescent product even at elevated temperature (600 degrees C) thus indicating the necessity of fuels. Similar attempts using acetate reactants with and without the addition of nitrogeneous fuels were made separately in order to find out the necessity of fuel also in this case. The characterization of the product in terms of purity, single-phase formation and surface morphology suggested that the fuel played no role in the case of the acetate precursors. A comparative study was made on the products obtained by the acetate precursor, combustion method and the conventional carbonate method. Among the three methods, the combustion method with glycine as fuel yielded the spinel phase with high purity Li2CoMn3O8 with superior electrochemical behavior both in terms of high cell voltage and good cycle life behavior.
Details
- Title: Subtitle
- Evaluation of Fuels for the Synthesis of Li2CoMn3O8
- Creators
- N Kalaiselvi - Central Electrochemical Research InstituteM A Kumar - Central Electrochemical Research InstituteM S Prasath - Central Electrochemical Research InstituteN G Renganathan - Central Electrochemical Research InstituteM Raghavan - Central Electrochemical Research InstituteN Muniyandi - Central Electrochemical Research Institute
- Resource Type
- Journal article
- Publication Details
- IONICS, Vol.8, pp.447-452
- DOI
- 10.1007/BF02376060
- ISSN
- 1862-0760
- Language
- English
- Date published
- 2002
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering
- Record Identifier
- 9984231887702771
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