Roomerature synthesis leading to nanocrystalline Ag2V 4O11

Frédéric Sauvage, Vincent Bodenez, Jean Marie Tarascon, Kenneth R. Poeppelmeier

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

This work highlights a roomerature composition study of the Ag 2O/V2O5/HF(aq) ternary system, leading to the precipitation of either various silver vanadates having Ag/V ratios from 1/2 to 3/1 or the new silver vanadium oxyfluoride compounds Ag 4V2O6F2 and Ag3VO 2F4, and a synthetic procedure that affords nanocrystalline Ag2V4O11 (SVO) at room temperature. The as-precipitated SVO particles exhibit an acicular morphology, 10-15 - 50-200 nm in size, and present a peculiar reactivity vs lithium notably through a Ag+/Li+ displacement reaction that progresses in a reversible fashion. This step forward thus enables the reversible and simultaneous combination of two active redox processes (silver and vanadium), providing a significant enhancement in the cathode gravimetric capacity of 320 mAh/g at C rate and more than 250 mAh/g at 5C.

Original languageEnglish
Pages (from-to)6778-6782
Number of pages5
JournalJournal of the American Chemical Society
Volume132
Issue number19
DOIs
Publication statusPublished - May 19 2010

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Roomerature synthesis leading to nanocrystalline Ag<sub>2</sub>V <sub>4</sub>O<sub>11</sub>'. Together they form a unique fingerprint.

  • Cite this