Cycling and storage performance at elevated temperatures of LiNi 0.5Mn1.5O4 positive electrodes for advanced 5 V Li-ion batteries

Boris Markovsky, Yosef Talyossef, Gregory Salitra, Doron Aurbach, Hyeong Jin Kim, Seungdon Choi

Research output: Contribution to journalArticlepeer-review

125 Scopus citations

Abstract

The electrochemical behavior of substituted spinel-nickel electrodes, LiNi0.5Mn1.5O4, was studied during prolonged cycling (Li-ion extraction/insertion) and storage at elevated temperatures. We have found that using an appropriate cycling protocol (constant current/constant voltage) of Li/LiNi0.5Mn1.5O4 cells, high charge-discharge capacities of the positive electrodes, around 140 mAh/g, can be obtained. At elevated temperatures, spinel-nickel electrodes demonstrated a stable performance and sufficient capacity retention in electrolyte solutions comprising alkyl carbonates (EC, DMC) and LiPF6.

Original languageEnglish
Pages (from-to)821-826
Number of pages6
JournalElectrochemistry Communications
Volume6
Issue number8
DOIs
StatePublished - Aug 2004

Keywords

  • 5 V lithium batteries
  • Cycling performance
  • Elevated temperatures
  • LiNiMnO electrodes

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