Ag4V2O6F2: An electrochemically active and high silver density phase

Erin M. Sorensen, Heather K. Izumi, John T. Vaughey, Charlotte L. Stern, Kenneth R. Poeppelmeier

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Low-temperature hydrothermal techniques were used to synthesize single crystals of Ag4V2O6F2. This previously unreported oxide fluoride phase was characterized by single-crystal X-ray diffraction and IR spectroscopy and was also evaluated as a primary lithium battery cathode. Crystal data: monoclinic, space group P21/n (No. 14), with a = 8.4034(4) Å, b = 10.548(1) Å, c = 12.459(1) Å, β = 90.314(2)°, and Z = 4. Ag4V2O 6F2 (SVOF) exhibits two characteristic regions within the discharge curve, an upper plateau at 3.5 V, and a lower sloped region around 2.3 V from reduction of the vanadium oxide fluoride framework. The material has a nominal capacity of 251 mAh/g, with 148 mAh/g above 3 V. The upper discharge plateau at 3.5 V is nearly 300 mV over the silver reduction potential of the commercial primary battery material, Ag2V4O11 (SVO).

Original languageEnglish
Pages (from-to)6347-6352
Number of pages6
JournalJournal of the American Chemical Society
Volume127
Issue number17
DOIs
Publication statusPublished - May 4 2005

    Fingerprint

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this