Phosphate additives for nonaqueous electrolyte rechargeable...

Details Phosphate additives for nonaqueous electrolyte rechargeable... Phosphate additives for nonaqueous electrolyte rechargeable...

H - Electricity

01

M

H01M 10/40 (2006.01) H01M 4/02 (2006.01) H01M 4/58 (2006.01) H01M 4/62 (2006.01)

Patent

CA 2353751

A lithium ion electrochemical cell having high charge/discharge capacity, long cycle life and exhibiting a reduced first cycle irreversible capacity, is described. The stated benefits are realized by the addition of at least one phosphate additive having the formula: (R1O) P (=O) (OR2) (OR3) and wherein R1, R2 and R3 are the same or different, wherein at least one, but not all three, of the R groups is hydrogen, or at least one of the R groups has at least 3 carbon atoms and contains an sp or sp2 hybridized carbon atom bonded to an sp3 hybridized carbon atom bonded to the oxygen atom bonded to the phosphorous atom.

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