Reversible Conversion Reactions with Lithium in Bismuth Oxyfluoride Nanocomposites

Fluoride based electrode materials for advanced energy storage devices

“…This is of particular interest as reversible conversion has been shown to exist for oxides [139], nitrides [140], and sulfides. The question relating to oxyfluorides was addressed through a systematic array of bismuth oxyfluorides including BiO 0.5 F 2 and BiOF [141] by Bervas et al [142]. The electrochemical and subsequent physical characterization of the compounds during and after discharge revealed a sequential conversion of the oxyfluorides.…”

Structure and electrochemical performance of FeF3/V2O5 composite cathode material for lithium-ion battery

“…In order to enhance the electronic conductivity of FeF 3 , addition of conductive reagent may be an effective way for preparing high performance FeF 3 cathode material. Recently, Amatucci's group reported that addition of conductive carbon can significantly improve the electrochemical performance of metal fluorides such as FeF 3 and BiF 3 , and they revealed the high capacity and good cycle performance [14][15][16][17]. Moreover, Amatucci and Pereira reported that the mixed conducting matrices (MCM) can be prepared by the addition of MoS 2 , V 2 O 5 or MoO 3 to improve the electrochemical performance of the metal fluoride [13].…”

“…The MCM approach focuses mainly on effective transport of both ions and electrons to the metal fluoride nanodomain. It has been found that introduction of V 2 O 5 to the electro-active material can markedly enhance the electrochemical performance of the composite cathode [17,18]. Additionally, the density of V 2 O 5 is much higher than that of carbon, and the addition of V 2 O 5 is in favor of enhancing the specific energy density of cathode material.…”

Modified coin cells to evaluate the electrochemical properties of solid-state fluoride-ion batteries at 150 °C

“…[23][24][25] It is generally attributable to the volumetric variations of the active material upon cycling (lithium input and output), leading to a partial loss of contact with the conductive additive, creating isolated particles of active materials which cannot contribute to the electrochemical reactions. Similar considerations can be made for FIBs.…”