Positive electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
A positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector and a positive electrode active substance layer formed upon the positive electrode current collector. The positive electrode active substance layer has a positive electrode active substance and a melamine-acid salt being a salt comprising melamine and acid.
1. A positive electrode for use in a non-aqueous electrolyte secondary battery,
the positive electrode comprising a positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector,
the positive electrode active material layer having a positive electrode active material and a melamine-acid salt being a salt comprising melamine and acid,
wherein the melamine-acid salt is melamine polyphosphate having a solubility of 0.5% or less in a non-aqueous electrolytic solution serving as a liquid non-aqueous electrolyte, and represented by chemical formula (2):
wherein content of the melamine-acid salt is 3% or less by mass based on the positive electrode active material layer,
and wherein a particle of the melamine polyphosphate is in contact with the positive electrode active material.
2. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 ,
wherein the melamine-acid salt is contained at 1% or more by mass based on the positive electrode active material layer.
3. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 ,
wherein the positive electrode active material layer comprises an electrically conductive material and a binder.
4. A non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte,
the positive electrode comprising a positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector,
the positive electrode active material layer having a positive electrode active material and a melamine-acid salt being a salt comprising melamine and acid
wherein the melamine-acid salt is melamine polyphosphate having a solubility of 0.5% or less in a non-aqueous electrolytic solution serving as a liquid non-aqueous electrolyte, and represented by chemical formula (2):
wherein content of the melamine-acid salt is 3% or less by mass based on the positive electrode active material layer
and wherein a particle of the melamine polyphosphate is in contact with the positive electrode active material.
5. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 ,
wherein a plurality of particles of the melamine polyphosphate are in contact with a surface of the positive electrode active material.