LITHIUM ION BATTERY ELECTRODE MATERIAL WITH COMPOSITE FUNCTIONAL COATING
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United States of America Patent
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Issued Date -
Feb 4, 2016
app pub date -
Jul 10, 2015
filing date -
Jul 30, 2014
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Abstract
A method of coating electrode material, for a lithium ion battery, that involves chemically grafting an organic layer to the electrode material. The method includes carbonizing the organic layer to form a doped carbon layer chemically bonded to the electrode material. A dopant included in the carbon layer is adapted to react with harmful material formed in the operation of the lithium ion battery and thereby protect the electrode material. Further, a dopant included in the carbon layer may improve the carbon layer's conductivity. A lithium ion battery that includes an electrode fabricated from electrode material that has doped carbon chemically bonded to the electrode material. A dopant included in the doped carbon is capable of reacting with harmful products formed in the electrolyte of the lithium ion battery during its charging and discharging process. A dopant included in the doped carbon improves electron transfer and thereby improves conductivity of the electrode material and the electrode fabricated from the electrode material.
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