Surface modified carbonaceous materials
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United States of America Patent
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Jan 14, 2003
Grant Date -
Sep 27, 2001
app pub date -
Apr 6, 2001
filing date -
Dec 30, 1996
priority date (Note) -
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Abstract
The present invention provides an electrochemical generator consisting of an anode, a cathode, and an electrolyte, wherein the anode and/or the cathode comprises a carbonaceous material obtained by a process comprising suspending a carbonaceous material containing carboxyl, amine and/or hydroxyl functions on its surface in a solution comprising at least one polymer and a solvent which dissolves the polymer, said polymer containing at least one carboxyl, amine and/or hydroxyl function, and treating the solution thus obtained under conditions promoting a dehydration reaction between at least one carboxyl function, and at least one amine and/or hydroxyl function, thereby grafting at least one said polymer onto said carbonaceous material by means of an ester or amide bond.
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