High voltage performances of Li2 NiPO4 F cathode with dinitrile-based electrolytes

Masatoshi Nagahama, Norifumi Hasegawa, Shigeto Okada

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110 Citations (Scopus)

Abstract

A sebaconitrile-based electrolyte, 1 M LiBF4 /ethylene carbonate-dimethyl carbonate -sebaconitrile (25:25:50 by vol %) exhibits excellent electrochemical stability above 6 V against Li/ Li+. To confirm that the electrolyte can work at high voltages, LiFePO4 was intentionally charged at 6 V vs Li/ Li+. After the 6 V charging, the discharge capacity was 137 mAh/g and the coulomb efficiency was 91%. In addition, this oxidation resistant electrolyte was able to prove that Li 2 NiPO4 F has actually ca. 5.3 V redox potential against Li anode through cyclic voltammetry and charge/discharge cycle test.

Original languageEnglish
Pages (from-to)A748-A752
JournalJournal of the Electrochemical Society
Volume157
Issue number6
DOIs
Publication statusPublished - Nov 1 2010

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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