Electrode, method of preparing the same, binder composition, lithium battery containing the electrode and the binder composition
AssigneeSamsung SDI Co., Ltd.
InventorsSeung-sik Hwang, Jin-hwan Park, Myung-dong Cho
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Abstract
An electrode including a binder comprising a waterborne polyurethane polymer compound and an electrode active material is provided. The waterborne polyurethane polymer compound improves the binding properties of the electrode. In addition, the polymer compound disperses well in water and is hardened through a crosslinking reaction to increase elastic force, thereby enabling adjustment of elastic and binding forces. As a result, a battery including the polymer compound has excellent recovery and charge/discharge properties.
Claims20
A binder for an energy storage device, the binder comprising a waterborne polyurethane polymer compound.
A binder for an energy storage device, the binder comprising a crosslinked polyurethane polymer compound, wherein the crosslinked polyurethane polymer compound comprises a reactant of a waterborne polyurethane polymer and a crosslinking agent.
A method of producing an electrode, the method comprising:
- mixing a waterborne polyurethane polymer compound, an electrode active material, and a crosslinking agent to prepare an electrode slurry;
- coating the electrode slurry on a collector before performing a crosslinking reaction;
- and
- performing the crosslinking reaction.
A polymer electrolyte composition comprising;
- an ion conductive salt;
- a polar solvent;
- and
- a crosslinked polyurethane polymer compound.
Dependencies are inferred from the claim text.