Lithium rechargeable cell having an excess of lifepo4 based...

Details Lithium rechargeable cell having an excess of lifepo4 based... Lithium rechargeable cell having an excess of lifepo4 based...

H - Electricity

01

M

H01M 10/052 (2010.01) H01M 10/056 (2010.01) H01M 4/131 (2010.01) H01M 4/136 (2010.01)

Patent

CA 2605867

A lithium rechargeable battery comprising a series of electrochemical cells each having an Li4Ti5012 based anode, an LiFeP.OMICRON.4 based cathode, an electrolyte and a separator between the anode from the cathode, wherein each electrochemical cell comprises an excess of LiFePO4 based cathode relative to the Li4Ti5012 based anode to prevent permanently damaging the electrochemical cell in an over-discharge.

L~invention décrit une batterie rechargeable au lithium comprenant une série de cellules électrochimiques ayant chacune une anode à base de Li4Ti5O12, une cathode à base de LiFePO4, un électrolyte et un séparateur placé entre l~anode et la cathode. Chacune desdites cellules comprend un excès de cathode à base de LiFePO4 par rapport à l~anode à base de Li4Ti5012, de manière à éviter un endommagement irréversible desdites cellules lors d~une décharge excessive.

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