Electrode binder comprising cationic semi-ipn polymer, electrode and cell comprising the same
AssigneeUIF (University Industry Foundation), Yonsei University
InventorsSang-Young LEE, Jung-Hui KIM
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Abstract
The present invention relates to an electrode binder containing a cationic semi-interpenetrating network polymer, as well as to electrodes and batteries incorporating such binder. The electrode binder of the present invention can enhance both the physical properties (dispersion, flexibility, and adhesion) and the electrochemical properties (performance, charge/discharge, and lifespan) of the electrodes.
Claims20
A binder for secondary battery electrodes, the binder comprising a cationic semi-interpenetrating network polymer (semi-IPN).
A method for manufacturing a secondary battery electrode, the method comprising:
- (a) preparing an electrode slurry by adding a binder and an electrode active material to a solvent;
- and
- (b) obtaining the electrode by applying the electrode slurry, wherein the binder includes a cationic monomer, a crosslinking monomer containing a multifunctional group, and a linear polymer.
A secondary battery electrode binder comprising a cationic semi-interpenetrating network polymer (semi-IPN),
- wherein the cationic semi-interpenetrating network polymer (semi-IPN) comprises a crosslinked polymer and a linear polymer,
- where the crosslinked polymer is obtained by polymerizing a cationic monomer and a multifunctional crosslinking monomer, and
- wherein the cationic monomer comprises both (vinylbenzyl)trimethylammonium chloride and 1-methyl-1-(4-nitrobenzyl) piperidinium chloride.
A secondary battery electrode binder comprising a cationic semi-interpenetrating network polymer (semi-IPN),
- wherein the cationic semi-interpenetrating network polymer (semi-IPN) comprises a crosslinked polymer and a linear polymer,
- where the crosslinked polymer is obtained by polymerizing a cationic monomer and a multifunctional crosslinking monomer, and
- wherein the cationic monomer comprises both 1-vinyl-3-allylimidazolium bis(trifluoromethanesulfonyl)imide (VAI-TFSI) and 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride.
Dependencies are inferred from the claim text.