Additives for electrolyte and cathode material in Li-ion batteries comprising metal-based cathode material which produces M2+ metal ions
AssigneesHydro-Quebec, Murata Manufacturing Co., Ltd.
InventorsCharlotte Mallet, Jean-Christophe Daigle, Sylviane Rochon, Karim Zaghib
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Abstract
Method of improving the performance of a Li-ion battery comprising metal-based cathode material which produces M2+ metal ions. The method comprises using a small organic compound in association with the electrolyte of the battery or using a polymer compound in association with the cathode active material of the battery. The small organic compound and the polymer compound comprise at least one chemical group suitable for forming complexes with the M2+ metal ions thereby preventing dissolution thereof.
Claims6
A method for preventing metal ions dissolution in a Li-ion battery comprising metal-based cathode material which produces M2+ metal ions, the method comprising:
- adding an organic compound to an electrolyte of the Li-ion battery, wherein the organic compound comprises at least one chemical group suitable for forming complexes with the M2+ metal ions, and wherein the organic compound has a general formula V
- wherein:
- R′ is a cyano alkene;
- R3 and R4 are each independently H or a C1-6 alkyl;
- and
- X1 and X2 are each O.
Dependencies are inferred from the claim text.