Saft America

Carine Margez

Thomas A Greszler

Saori Tokuoka

Frank Cao

Xilin Chen

Jian Dong

Joong Sun Park

Owen Ou

Provided is a positive electrode active material for a lithium-ion battery, the positive electrode active material including a blend of a doped lithium manganese iron phosphate (dLMFP) according to the formula: LiMnFeMPO, wherein 0.9&#x3c;x+y&#x3c;1; and M is one or more selected from the group consisting of Mg, Ca and Ba with one or both of a lithium nickel cobalt manganese oxide (NMC) compound having a Ni content greater than 0.6 relative to a total amount of metals other than Li and a lithium nickel cobalt aluminum oxide (NCA) compound. In particular, provided is a blend at a weight ratio of dLMFP to NMC and/or NCA (i.e., dLMFP:(NMC+NCA)) of &#x3e;70:&#x3c;30, such as 75:25, 80:20, 85:15, 90:10, etc.

Cathode materials for lithium ion batteries

Provided are an electrolyte for low temperature operation of lithium titanate electrodes, graphite electrodes, and lithium-ion batteries as well as electrodes and batteries employing the same. The electrolyte contains 1 to 30 vol % of a low molecular weight ester having a molecular weight of less than 105 g/mol and at least one non-fluorinated carbonate. An electrolyte additive may include 0.1 to 10 wt % of fluorinated ethylene carbonate, particularly when used with a graphite anode. Another electrolyte contains a high content of the low molecular weight ester of at least 70 vol %.

Electrolyte including low molecular weight ester and non-fluorinated carbonate for low temperature operation of lithium titanate and graphite electrodes, and lithium-ion batteries

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Parkville, MD, United States of America

Carine Margez