POSITIVE POLE MATERIAL OF LITHIUM ION BATTERY, METHOD FOR PREPARING THE SAME, POSITIVE POLE, AND LITHIUM ION BATTERY
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United States of America Patent
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Sep 25, 2012
filing date -
Feb 13, 2012
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Abstract
The present invention, relating to the battery field, discloses a positive pole material of a lithium ion battery and method for preparing the same, a positive pole of a lithium ion battery, and a lithium ion battery, which are capable of effectively preventing precipitation of metal impurity ions on a negative pole, and improving the cycle performance and high-temperature storage performance of the lithium ion battery. The positive pole material of the lithium ion battery includes: a conductive additive; nano phosphate, where the formula of the nano phosphate is LiMPO4, M being one or multiple of Co, Ni, Mn, Fe, and V; and a functional polymer material, where the functional polymer material contains a transition metal ion chelating function group. The present invention also provides a method for preparing a lithium ion battery and a communication device. The present invention is applicable to the battery field.
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