Chalkogenide des As, Sb und Bi als positive Elektroden in Lithium-Batterien / Chalcogenides of As, Sb and Bi as Positive Electrodes in Lithium Cells

Abstract

<jats:title>Abstract</jats:title><jats:p> Redox properties of layer type chalcogenides of main group V elements were investigated in molten salt and organic Li<jats:sup>+</jats:sup>-electrolytes. Even at room temperature, Bi<jats:sub>2</jats:sub>S<jats:sub>3</jats:sub>, Bi<jats:sub>2</jats:sub>Se<jats:sub>3</jats:sub> and Bi<jats:sub>2</jats:sub>Te<jats:sub>3</jats:sub> can be reduced with about 100% material efficiency to Li<jats:sub>3</jats:sub>Bi as final product. The reduction of Bi<jats:sub>2</jats:sub>S<jats:sub>3</jats:sub> to Bi<jats:sup>0</jats:sup> and Li<jats:sub>2</jats:sub>S can be reversed in organic electrolytes.</jats:p>

Electrochemical behavior of Bi4B2O9towards lithium-reversible conversion reactions without nanosizing

“…2 This latter finding has enabled the feasibility to reach 2 eper d-metal as for -Li 2 IrO 3 . 3 Nevertheless, electrodes functioning via conversion reactions were first mentioned back in the 1978's 4 and fully demonstrated in 2000 for 3d transition metal oxides (CoO, NiO…). 5 These reactions, demonstrated for binary metal oxides, were latter on generalized to metal sulfides, nitrides, halides, phosphides.…”

Effects of amorphous AlPO4 coating on the electrochemical performance of BiF3 cathode materials for lithium-ion batteries

“…Furthermore, the demonstration of the conversion reaction in transition metal oxides has renewed interest in conversion compounds as high-capacity electrodes [3,4]. In addition to the oxides, other conversion compounds of interest include hydrides [5], sulfides [6,7], nitrides [8,9], and fluorides [10,11]. The overall reaction for conversion reaction can be summarized as follows:…”

Conversion Reaction Cathodes By First Principles Methods

“…discharge where M the active electrode material, MX y , which is reduced by Li + to the metal, M 0 , and a corresponding lithium compound, Li z/y X. Reversible conversion reactions have been demostrated with a number of metal oxides 1 , metal nitrides 2 , and metal sulfides 3 , however these materials only display low reaction potentials. This is a consequence of the direct proportionality between discharge voltage and the strength of the metal-anion bond ionicty.…”