Polymer electrode for lithium secondary battery including the polymer and lithium second battery employing the electrode

An electrode binder composition for a rechargeable lithium battery comprising:

• an aqueous solvent;
• and
• a polymer composition comprising first and second polymer compounds, each of the first and second polymer compounds comprising a first repeating unit having a cationic group and a second repeating unit having an anionic group, wherein the cationic group of the first polymer compound forms an intermolecular ionic bond with the anionic group of the second polymer compound, and the anionic group of the first polymer compound forms an intermolecular ionic bond with the cationic group of the second polymer compound,
• wherein:
• (i) each of the first repeating unit of the first polymer compound and the first repeating unit of the second polymer compound is represented by one of Formula 1(a), 1(b) or 3:
• wherein in Formulae 1(a) and 1(b):
• each of R1 to R4 is independently hydrogen, a unsubstituted or substituted C1-C30 alkyl group, a unsubstituted or substituted C1-C30 alkoxy group, a unsubstituted or substituted C6-C30 aryl group, a unsubstituted or substituted C6-C30 aryloxy group, a unsubstituted or substituted C3-C30 heteroaryl group, a unsubstituted or substituted C3-C30 heteroaryloxy group, a unsubstituted or substituted C4-C30 cycloalkyl group, or a unsubstituted or substituted C3-C30 heterocycloalkyl group,
• is a 3 to 31 membered ring including at least one heteroatom and 2 to 30 carbon atoms,
• X is —N(R′)(R″), —S(R′), or —P(R′)(R″);
• and
• each of R′ and R″ is idependently a C1-C30 alkyl group, a C1-C30 alkoxy group, a C6-C30 aryl group, a C6-C30 aryloxy group, a C3-C30 heteroaryl group, a C3-C30 heteroaryloxy group, a C4-C30 cycloalkyl group, or a C3-C30 heterocycloalkyl group;
• wherein in Formula 3:
• X′ is —N(R′)(R″)(R′″), —S(R′), —OP(R′)(R″)(R′″), or —P(R′)(R″)(R′″),
• each of R1 to R3 is independently hydrogen, a unsubstituted or substituted C1-C30 alkyl group, a unsubstituted or substituted C1-C30 alkoxy group, a unsubstituted or substituted C6-C30 aryl group, a unsubstituted or substituted C6-C30 aryloxy group, a unsubstituted or substituted C3-C30 heteroaryl group, a unsubstituted or substituted C3-C30 heteroaryloxy group, a unsubstituted or substituted C4-C30 cycloalkyl group, or a unsubstituted or substituted C3-C30 heterocycloalkyl group,
• A is selected from the group consisting of:
• chemical bonds;
• C1-C30 alkyl groups, C6-C30 aryl groups, C7-C30 arylalkyl groups, C1-C30 heteroaryl groups, C4-C30 cycloalkyl groups, and C1-C30 heterocycloalkyl groups;
• and
• C1-C30 alkyls, C6-C30 aryls, C7-C30 arylalkyls, C1-C30 heteroaryls, C4-C30 carbon rings, and C1-C30 hetero rings substituted with at least one substituent selected from the group consisting of carbonyl groups, oxy groups, carbonyloxy groups, iminocarbonyl groups, iminosulfonyl groups, sulfanyl groups, sulfinyl groups, sulfonyl groups, sulfonyloxy groups, imino groups, methylene repeating units, methyleneoxide repeating units, ethyleneoxide repeating units, and propyleneoxide repeating units, and
• each of R′, R″ and R′″ is independently a C1-C30 alkyl group, a C1-C30 alkoxy group, a C6-C30 aryl group, a C6-C30 aryloxy group, a C3-C30 heteroaryl group, a C3-C30 heteroaryloxy group, a C4-C30 cycloalkyl group, or a C3-C30 heterocycloalkyl group;
• wherein each of the second repeating unit of the first polymer compound and the second repeating unit of the second polymer compound is represented by Formula 4:
• wherein in Formula 4:
• Z′ is a carboxylate group (—C(═O)O), a sulfate group ((—OS(═O)2O), a sulfite group (—OS(═O)O), a sulfinate group (—S(═O)O), a phosphate group ((—OP(═O)(O)2), or a phosphonate group (—P(═O)(O)2),
• each of R1 to R3 is independently hydrogen, a unsubstituted or substituted C1-C30 alkyl group, a unsubstituted or substituted C1-C30 alkoxy group, a unsubstituted or substituted C6-C30 aryl group, a unsubstituted or substituted C6-C30 aryloxy group, a unsubstituted or substituted C3-C30 heteroaryl group, a unsubstituted or substituted C3-C30 heteroaryloxy group, a unsubstituted or substituted C4-C30 cycloalkyl group, or a unsubstituted or substituted C3-C30 heterocycloalkyl group,
• A is selected from the group consisting of:
• chemical bonds;
• C1-C30 alkyl groups, C6-C30 aryl groups, C7-C30 arylalkyl groups, C1-C30 heteroaryl groups. C4-C30 cycloalkyl groups, and C1-C30 heterocycloalkyl groups;
• and
• C1-C30 alkyls C6-C30 aryls, C7-C30 arylalkyls, C1-C30 heteroaryls, C4-C30 carbon rings, and C1-C30 hetero rings substituted with at least one substituent selected from the group consisting of carbonyl groups, oxy groups, carbonyloxy groups, iminocarbonyl groups, iminosulfonyl groups, sulfanyl groups, sulfinyl groups, sulfonyl groups, sulfonyloxy groups, imino groups, methylene repeating units, methyleneoxide repeating units, ethyleneoxide repeating units, and propyleneoxide repeating units, and
• n is 1 or 2;
• or (ii) the first repeating unit is represented by Formula 3, the second repeating unit is represented by Formula 4, and each of the first and second polymer compounds further comprises a third repeating unit represented by Formula 23:
• wherein in Formula 23:
• each of R8 through R10 is independently selected from the group consisting of hydrogen, unsubstituted or substituted C1-C30 alkyl groups, unsubstituted or substituted C1-C30 alkoxy groups, unsubstituted or substituted C6-C30 aryl groups, unsubstituted or substituted C6-C30 aryloxy groups, unsubstituted or substituted C3-C30 heteroaryl groups, unsubstituted or substituted C3-C30 heteroaryloxy groups, unsubstituted or substituted C4-C30 cycloalkyl groups, and unsubstituted or substituted C3-C30 heterocycloalkyl groups,
• A is selected from the group consisting of:
• chemical bonds;
• C1-C30 alkyl groups, C6-C30 aryl groups, C7-C30 arylalkyl groups, C1-C30 heteroaryl groups, C4-C30 cycloalkyl groups, and C1-C30 heterocycloalkyl groups;
• and
• C1-C30 alkyls C6-C30 aryls, C7-C30 arylalkyls, C1-C30 heteroaryls, C4-C30 carbon rings, and C1-C30 hetero rings substituted with at least one substituent selected from the group consisting of carbonyl groups, oxy groups, carbonyloxy groups, iminocarbonyl groups, iminosulfonyl groups, sulfanyl groups, sulfinyl groups, sulfonyl groups, sulfonyloxy groups, imino groups, methylene repeating units, methyleneoxide repeating units, ethyleneoxide repeating units, and propyleneoxide repeating units;
• and
• W is selected from the group consisting of carboxyl groups, hydroxyl groups, amine groups, amide groups, imide groups, nitrile groups, sulfone groups, halogen groups, silane groups, and Si(R′)(R″)(R′″) groups wherein each of R′, R″ and R′″ is independently a C1-C20 alkyl group, a C1-C20 alkoxy group, or a halogen atom;
• or (iii) the first repeating unit is represented by Formula 3, and the second repeating unit comprises 2 or 3 repeating units independently represented by Formula 4.