Resin for energy device electrode, composition for forming energy device electrode, energy device electrode, and energy device
A resin for an energy device electrode contains a structural unit derived from a nitrile group-containing monomer; and a structural unit derived from a monomer represented by the following Formula (I), wherein the resin does not contain a structural unit that is derived from a carboxy group-containing monomer and that contains a carboxy group, or the resin has a ratio of a structural unit that is derived from a carboxy group-containing monomer and that contains a carboxy group of 0.01 moles or less with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer, and a ratio of the structural unit derived from a nitrile group-containing monomer to a total of structural units derived from each monomer is from 90% by mole to less than 100%.
1. A resin for an energy device electrode, the resin comprising:
a structural unit derived from a nitrile group-containing monomer; and
a structural unit derived from 2-methoxyethyl acrylate,
wherein the resin does not comprise a structural unit that is derived from a carboxy group-containing monomer and that comprises a carboxy group, or the resin has a ratio of a structural unit that is derived from a carboxy group-containing monomer and that comprises a carboxy group of 0.01 moles or less with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer,
and a ratio of the structural unit derived from a nitrile group-containing monomer to a total of structural units derived from each monomer is from 90% by mole to less than 100%
2. The resin for an energy device electrode according to claim 1 , wherein a ratio of the structural unit derived from 2-methoxyethyl acrylate with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer is from 0.001 moles to 0.2 moles.
3. The resin for an energy device electrode according to claim 1 , further comprising a structural unit derived from a monomer represented by the following Formula (II):
wherein, in Formula (II), R 3 represents a hydrogen atom or a methyl group, and R 4 represents an alkyl group having from 4 to 100 carbon atoms.
4. The resin for an energy device electrode according to claim 3 , wherein a ratio of the structural unit derived from a monomer represented by Formula (II) with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer is from 0.001 moles to 0.2 moles.
5. The resin for an energy device electrode according to claim 1 , wherein the nitrile group-containing monomer comprises acrylonitrile.
6. A composition for forming an energy device electrode, the composition comprising the resin for an energy device electrode according to claim 1 .
7. The composition for forming an energy device electrode according to claim 6 , further comprising a positive electrode active material comprising a lithium-containing metal composite oxide comprising lithium and nickel and having a ratio of nickel to metal, excluding lithium, of 50% by mole or more.
8. The composition for forming an energy device electrode according to claim 7 , wherein the positive electrode active material comprises a compound represented by the following Formula (III):
Li a Ni b Co c M d O 2+e Formula (III)
wherein, in Formula (III), M is at least one selected from the group consisting of Al, Mn, Mg and Ca, a, b, c, d, and e satisfy 0.2≤a≤1.2, 0.5≤b≤0.9, 0.05≤c≤0.4, 0≤d≤0.2, and −0.2≤e≤0.2, respectively, and b+c+d=1.
9. An energy device electrode, comprising:
a current collector; and
an electrode mixture layer provided on at least one surface of the current collector and comprising the composition for forming an energy device electrode according to claim 6 .
10. An energy device comprising the energy device electrode according to claim 9 .
11. The energy device according to claim 10 , which is a lithium ion secondary battery.