MANGANESE RICH CATHODE COMPOSITION

MANGANESE RICH CATHODE COMPOSITION

A cathode composition for a battery has the general formula: Li1+aMn1-bAl1-cO2; wherein the values of a, b and c are greater than 0. A method of making the cathode composition is also disclosed, wherein a lithium manganese nickel oxide precursor is subjected to high energy ball milling, the precurso...

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Hauptverfasser: BILLAUD EP. BOUVILLE, Juliette, ROBERTS, Matthew, GUERRINI, Niccolo
Format: Patent
Sprache:eng ; fre ; ger
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CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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creator BILLAUD EP. BOUVILLE, Juliette
ROBERTS, Matthew
GUERRINI, Niccolo
description A cathode composition for a battery has the general formula: Li1+aMn1-bAl1-cO2; wherein the values of a, b and c are greater than 0. A method of making the cathode composition is also disclosed, wherein a lithium manganese nickel oxide precursor is subjected to high energy ball milling, the precursor having oxidation states that are equal to the oxidation states of the respective elements in the final cathode composition. The composition preferably has a single phase rock salt structure, wherein there are no peaks below a 2ϴ value of 35 in the XRD pattern. Preferably, the manganese component in the composition comprises a plurality of oxidation states, in particular a mixture of Mn(III) and Mn(IV). A cathode comprising the cathode composition and an electrochemical cell comprising the cathode are also claimed.
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subjects CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
title MANGANESE RICH CATHODE COMPOSITION
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