Coating solution
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasaru KUBOTA
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Abstract
A coating solution used for forming a coating film on a surface of a positive electrode active material, wherein the coating solution includes a solvent and a solute, the solvent includes water, the solute includes M element, the M element includes at least one selected from the group consisting of phosphorus and boron, a content of the M element in the coating solution is 0.05% by mass or more and 3.0% by mass or less, a content of lithium in the coating solution is less than 0.1% by mass, an absorbance in a wavelength 660 nm of the coating solution is 0.1 or less, and a surface energy of the coating solution is 50 mN/m or less.
Claims4
A coating solution to be used to form a coating film on a surface of a positive electrode active material, wherein:
- the coating solution comprises a solvent and a solute;
- the solvent contains water;
- the solute contains an M element;
- the M element contains at least one kind selected from the group consisting of phosphorus and boron;
- a content of the M element in the coating solution is 0.05% by mass or more and 3.0% by mass or less;
- a content of lithium in the coating solution is less than 0.1% by mass;
- absorbance of the coating solution at a wavelength of 660 nm is 0.1 or less;
- and
- surface energy of the coating solution is 50 mN/m or less.
A coating solution to be used to form a coating film on a surface of a positive electrode active material, wherein:
- the coating solution comprises a solvent, a solute, and a surfactant;
- the solvent contains water;
- the solute contains an M element;
- the M element contains at least one kind selected from the group consisting of phosphorus and boron;
- a content of the M element in the coating solution is 1.5% by mass or more and 2.6% by mass or less;
- a content of lithium in the coating solution is less than 0.1% by mass;
- absorbance of the coating solution at a wavelength of 660 nm is 0.1 or less;
- surface energy of the coating solution is 15 mN/m or more and 30 mN/m or less;
- and
- a content of the surfactant in the coating solution is 0.1% by mass or more and 1.0% by mass or less.
Dependencies are inferred from the claim text.