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Tong W.,Energy Storage Research Group | Tong W.,Rutgers University | Yoon W.-S.,Brookhaven National Laboratory | Amatucci G.G.,Energy Storage Research Group | Amatucci G.G.,Rutgers University
Journal of Power Sources | Year: 2010

An electrochemical characterization of a silver molybdenum oxyfluoride perovskite positive electrode for Li batteries was investigated as a function of synthesis condition, stoichiometry and effect of Mo and Ag derived second phases. A detailed in situ electrochemical study by XAS, Raman, and XRD was performed, revealing a 3 electron silver displacement or conversion reaction at >3 V and a 2 electron reduction of Mo6+ to Mo4+ in the region <3 V. © 2010 Elsevier B.V. All rights reserved.

Amatucci G.G.,Rutgers University | Amatucci G.G.,Energy Storage Research Group | Pereira N.,Rutgers University | Pereira N.,Energy Storage Research Group | And 10 more authors.
Journal of Fluorine Chemistry | Year: 2011

In order to utilize high energy metal fluoride electrode materials as direct replacement electrode materials for lithium ion batteries in the future, a methodology to prelithiate the cathode or anode must be developed. Herein, we introduce the use of a solid state Li3N route to achieve the lithiation and mechanoreduction of metal fluoride based nanocomposites. The resulting prelithiation was found to be effective with the formation of xLiF:Me structures of very fine nanodimensions analogous to what is found by electrochemical lithiation. Physical and electrochemical properties of these nanocomposites for the bismuth and iron lithium fluoride systems are reported. © 2011 Elsevier B.V.

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