{
  "$type": "site.standard.document",
  "description": "Provide is a separator for a power storage device, which is able to reliably prevent short circuit between a positive electrode layer and a negative electrode layer while maintaining the function of permeating ions, and able to effectively suppress shrinkage, and a power storage device using the…",
  "path": "/patents/981883",
  "publishedAt": "2013-11-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01G11/52",
    "MURATA MANUFACTURING CO [JP]"
  ],
  "textContent": "Provide is a separator for a power storage device, which is able to reliably prevent short circuit between a positive electrode layer and a negative electrode layer while maintaining the function of permeating ions, and able to effectively suppress shrinkage, and a power storage device using the separator. In a separator for a power storage device, which is composed of a composite material including inorganic microparticles and an organic binder, the separator being for use in a power storage device structured such that a positive electrode layer and a negative electrode layer are stacked so as to be opposed to each other with a separator interposed therebetween, and housed along with an electrolyte solution in an outer packaging, (a) the composite material has a pigment volume concentration PVC of 55% or more, and (b) the inorganic microparticles have an average particle size in the range of 0.2 to 3.0 µm, and a general particle shape index in the range of 0.50 to 0.85. In addition, the composite material has a pigment volume concentration PVC in the range of 55 to 80%. Furthermore, the composite material has a pigment volume concentration PVC in the range of 55 to 65%.",
  "title": "SEPARATOR FOR POWER STORAGE DEVICE AND POWER STORAGE DEVICE"
}