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Synthesis and electrochemical characterization of LiMn2O4 cathode materials for lithium polymer batteries

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Abstract

Spinel LiMn2O4 powders with sub-micron, narrow particle-size distribution, and phase-pure particles were synthesized at low temperatures from aqueous solution of metal acetate containing glyoxylic acid as a chelating agent by a sol-gel method. The effects of the calcination temperature and glyoxylic acid quantity on the physicochemical properties of spinel LiMn2O4 powders were examined with X-ray diffractometry (XRD), the Brunauer-Emmett-Teller (BET) method and scanning electron microscopy (SEM). Porous LiMn2O4 electrode was characterized electrochemically with charge/discharge experiments and A.C. impedance spectroscopy. The cycling performance of a Li/polymer electrolyte/LiMn2O4 cell has been discussed in terms of contact and interfacial resistance by A. C. impedance spectroscopy.

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Authors and Affiliations

  1. Polymer Materials Laboratory, Chemical Sector, Samsung Advanced Institute of Technology, 103-12, Moonji-Dong, Yusong-Gu, 305-380, Taejon, Korea

    Yang-Kook Sun & Dong-Won Kim

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  1. Yang-Kook Sun
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  2. Dong-Won Kim
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Correspondence to Yang-Kook Sun.

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Sun, YK., Kim, DW. Synthesis and electrochemical characterization of LiMn2O4 cathode materials for lithium polymer batteries. Korean J. Chem. Eng. 16, 449–455 (1999). https://doi.org/10.1007/BF02698267

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  • DOI: https://doi.org/10.1007/BF02698267

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