Electrochemical performance of polyaniline coated LiMn 2 O 4 cathode active material for lithium ion batteries


Sahan H., Dokan F., Aydin A., Ozdemir B., Ozdemir N., PATAT Ş.

3rd International Advances in Applied Physics and Materials Science Congress, APMAS 2013, Antalya, Turkey, 24 - 28 April 2013, vol.1569, pp.61-64 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 1569
  • Doi Number: 10.1063/1.4849229
  • City: Antalya
  • Country: Turkey
  • Page Numbers: pp.61-64
  • Keywords: Cycling performance, LiMn 2 O 4, Lithium ion batteries, Polyaniline

Abstract

© 2013 AIP Publishing LLC. LiMn 2 O 4 compound are synthesized by combustion method using glycine as a fuel at temperature (T), 800°C which was coated by a polyaniline. The goal of this procedure is to promote better electronic conductivity of the LiMn 2 O 4 particles in order to improve their electrochemical performance for their application as cathodes in secondary lithium ion batteries. The structures of prepared products have been investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). To investigate the effect of polyaniline coating galvanostatic charge-discharge cycling (148 mA g -1 ) studies are made in the voltage range of 3.5-4.5 V vs. Li at room temperature. Electrochemical performance of the LiMn 2 O 4 was significantly improved by the polaniline coating.