Composition for non-aqueous secondary battery functional layer, functional layer for non-aqueous secondary battery, and non-aqueous secondary battery
A composition for a non-aqueous secondary battery functional layer contains a binder and inorganic particles including a sulfonate group. A non-aqueous secondary battery includes a functional layer for a non-aqueous secondary battery that is formed using this composition for a non-aqueous secondary battery functional layer.
1. A composition for a non-aqueous secondary battery functional layer comprising:
a binder; and
inorganic particles including a sulfonate group,
wherein the inorganic particles have a percentage content of 80 mass % or more relative to total solid content.
2. The composition for a non-aqueous secondary battery functional layer according to claim 1 , wherein
the inorganic particles have a sulfonate group content of at least 0.1 μmol/g and not more than 1,200 μmol/g.
3. The composition for a non-aqueous secondary battery functional layer according to claim 1 , wherein
the binder includes a sulfonate group.
4. A functional layer for a non-aqueous secondary battery formed using the composition for a non-aqueous secondary battery functional layer according to claim 1 .
5. A non-aqueous secondary battery comprising the functional layer for a non-aqueous secondary battery according to claim 4 .
6. The non-aqueous secondary battery according to claim 5 , comprising a positive electrode, a negative electrode, an electrolysis solution, and a separator, wherein
the separator includes the functional layer for a non-aqueous secondary battery.
7. The non-aqueous secondary battery according to claim 5 , wherein
the positive electrode contains a positive electrode active material including one or more of Co, Mn, Fe, and Ni.