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

65 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

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Fluorides
Silver
Oxides
Primary batteries
Single crystals
Vanadium
Lithium batteries
Lithium
X-Ray Diffraction
Infrared spectroscopy
Spectrum Analysis
Electrodes
Cathodes
X ray diffraction
Crystals
Temperature

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Ag4V2O6F2 : An electrochemically active and high silver density phase. / Sorensen, Erin M.; Izumi, Heather K.; Vaughey, John T.; Stern, Charlotte L.; Poeppelmeier, Kenneth R.

In: Journal of the American Chemical Society, Vol. 127, No. 17, 04.05.2005, p. 6347-6352.

Research output: Contribution to journalArticle

Sorensen, Erin M. ; Izumi, Heather K. ; Vaughey, John T. ; Stern, Charlotte L. ; Poeppelmeier, Kenneth R. / Ag4V2O6F2 : An electrochemically active and high silver density phase. In: Journal of the American Chemical Society. 2005 ; Vol. 127, No. 17. pp. 6347-6352.
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