Effect of Mn, Ni, Co transition metal ratios in lithium rich metal oxide cathodes on lithium ion battery performance


Cetin B., Camtakan Z. , Yuca N.

2019 Fall Meeting Metal Oxide- and Oxyhydride-based Nanomaterials for Energy and Environment-related Applications, EMRS 2019, Warszawa, Poland, 16 - 19 September 2019, vol.33, pp.2490-2494 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 33
  • Doi Number: 10.1016/j.matpr.2020.03.573
  • City: Warszawa
  • Country: Poland
  • Page Numbers: pp.2490-2494
  • Keywords: High voltage cathodes, Li-ion batteries, Li-rich cathodes

Abstract

© 2019 Elsevier Ltd. All rights reserved.Lithium rich layered metal oxide is a high energy density cathode material for new generation lithium-ion batteries (LIBs). This material has Li [Li1/3Mn2/3]O2and LiMO2(M: Ni, Co, Mn, Al etc.) structure and exhibit higher irreversible capacity and cycle life than conventional cathode materials. In this study, the stoichiometry of metals in the lithium rich cathode material formulation was investigated by changing Mn, Ni and Co ratios. Li1.2Mn0.49+xCo0.2-2xNi0.2-2xAl0.02O2(x※=※0, 0.01, 0.02, 0.03). formulation was used and the prepared lithium rich cathode active powders were structurally characterized by XRD, ICP and NAA. Li-rich cathodes were tested by electrochemical methods, too.