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US 10,707,490 B2Granted
Polymer compound, intermediate composition, negative electrode, electricity storage device, slurry for negative electrodes, method for producing polymer compound, and method for producing negative electrode
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsYusuke Sugiyama, Takeshi Kondo, Nobuhiro Goda, Masakazu Murase
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Abstract
A polymer compound, which is used as a binder for a negative electrode of an electricity storage device, is obtained by condensation of a vinyl polymer that contains a carboxyl group and a third compound that is selected from among an aromatic multifunctional amine, phosphorous acid, phosphorous acid ester, trialkoxysilane, and phosphoric acid.
Claims8
A negative electrode of an electrical storage device, comprising:
- a binder for a negative electrode, including a polymer compound obtained by condensing:
- a carboxy group-containing vinyl polymer;
- an aromatic multifunctional amine;
- and
- a third compound selected from phosphorous acid, phosphorous acid ester, trialkoxysilane, and phosphoric acid,
- wherein the aromatic multifunctional amine is a multifunctional amine represented by the following formula (1),
- wherein Y represents a straight chain alkyl group having 1 to 4 carbon atoms, a phenylene group, or an oxygen atom, R1 and R2 each independently represent one or more hydrogen atoms, methyl groups, ethyl groups, trifluoromethyl groups, or methoxy groups;
- and
- a negative electrode active material,
- wherein the negative electrode active material is at least one selected from carbon-based materials capable of intercalating and deintercalating lithium, elements capable of producing alloy with lithium, and compounds including an element capable of producing alloy with lithium.
7 more elements
A negative electrode of an electrical storage device, comprising:
- a binder for a negative electrode, including a polymer compound obtained by condensing a carboxy group-containing vinyl polymer and an aromatic multifunctional amine,
- wherein at least one selected from a phosphoric acid group, a phosphoric acid ester group, and a trialkoxysilane groups is added to a carboxy group in the polymer compound, and
- wherein the aromatic multifunctional amine is a multifunctional amine represented by the following formula (1),
- wherein Y represents a straight chain alkyl group having 1 to 4 carbon atoms, a phenylene group, or an oxygen atom, R1 and R2 each independently represent one or more hydrogen atoms, methyl groups, ethyl groups, trifluoromethyl groups, or methoxy groups;
- and
- a negative electrode active material,
- wherein the negative electrode active material is at least one selected from carbon-based materials capable of intercalating and deintercalating lithium, elements capable of producing alloy with lithium, and compounds including an element capable of producing alloy with lithium.
4 more elements
Dependencies are inferred from the claim text.