CPC H01M 4/64 (2013.01) [H01M 4/13 (2013.01); H01M 4/621 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01); H01M 10/0562 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0082 (2013.01)] | 12 Claims |
1. A lithium secondary battery comprising an electrode and a gel polymer electrolyte,
wherein the electrode comprises an electrode current collector; and an electrode active material layer which is formed on one surface of the electrode current collector and includes an electrode active material and an organic binder containing an ethylenically unsaturated group and a main chain or a side chain, wherein the ethylenically unsaturated group is substituted into the main chain or the side chain, and the main chain or the side chain comprises a unit containing at least one selected from an alkylene group having 1 to 5 carbon atoms, which is substituted with at least one halogen element, an alkylene oxide group having 1 to 5 carbon atoms, which is substituted with at least one halogen element, an imide group, or celluloid, and
the gel polymer electrolyte comprises a polymer network having a three-dimensional structure formed by a radical polymerization of an oligomer containing a (meth)acrylate group wherein the oligomer is bonded with the organic binder.
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