Abstract
In a novel attempt to exploit corn starch as gelling agent (in sol–gel method) and combustible fuel (in solution-assisted combustion method), high-capacity LiMn0.4Ni0.4Co0.2O2 and LiMn1/3Ni1/3Co1/3O2 cathode materials have been prepared and a comparison of electrochemical performance of the same has been made. Among the two compounds chosen for the study, LiMn1/3Ni1/3Co1/3O2 exhibits better physical and electrochemical properties. Particularly, LiMn1/3Ni1/3Co1/3O2 cathode synthesized using corn starch-assisted combustion method exhibits an appreciable capacity of 176 mAh g−1, excellent capacity retention of 93 % up to 100 cycles and susceptible to rate capability test up to 1 C rate, thus qualifying the same for high-capacity and high-rate lithium battery applications. The study demonstrates the possibility of exploiting corn starch as gelling agent and as a combustible fuel in synthesizing lithium intercalating oxide compounds with improved electrochemical behaviour.
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Acknowledgments
Among the authors, Gangulibabu and D. Bhuvaneswari are thankful to the Council of Scientific & Industrial Research (CSIR) for the financial support through senior research fellowship. N. Kalaiselvi is grateful to CSIR for financial assistance through CSIR-EMPOWER project.
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Gangulibabu, Bhuvaneswari, D. & Kalaiselvi, N. Comparison of corn starch-assisted sol–gel and combustion methods to prepare LiMn x Co y Ni z O2 compounds. J Solid State Electrochem 17, 9–17 (2013). https://doi.org/10.1007/s10008-012-1851-z
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DOI: https://doi.org/10.1007/s10008-012-1851-z