Synthesis and characterization of li-rich cathode material for lithium ion batteries


Cetin B., Camtakan Z., Yuca N.

Materials Letters, vol.273, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 273
  • Publication Date: 2020
  • Doi Number: 10.1016/j.matlet.2020.127927
  • Journal Name: Materials Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Li-rich cathodes, High voltage cathodes, Cathode stoichiometry, ELECTROCHEMICAL PROPERTIES, PERFORMANCE, ELECTRODES, PROGRESS
  • Istanbul Technical University Affiliated: Yes

Abstract

© 2020Lithium rich (Li-rich) transition metal oxide cathodes are considered to be among the most promising intercalation cathode materials used for lithium-ion batteries (LIBs) with their high energy density above 900 Wh/kg. Li1.252Mn0.557Ni0.123Co0.126Al0.0142O2 layered Li-rich nickel manganese cobalt (NMC) cathode material was synthesized by sol-gel method. This study aims to reveal the superiority of Li-rich cathode material over existing commercial cathodes. The stoichiometric ratio of Li-rich cathode material was confirmed by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS), portable X-ray Fluorescence (pXRF) and Instrumented Neutron Activation Analysis (INAA). Structural and morphological characterization of Li-rich NMC material was examined with X-ray diffraction (XRD) and Scanning Electron Microscopy-Emission with Energy Dispersive Spectroscopy (SEM-EDS). Electrochemical performances of Li-rich NMC and commercial NMC111 cathode materials in coin cell at C/10, C/5 and 1C were investigated. The discharge capacity of Li-rich NMC and NMC111 was found to be 160, 156, 96 mAhg−1 and 153, 120, 72 mAhg−1 at C/10, C/5, 1C, respectively.