{
  "$type": "site.standard.document",
  "description": "The present invention aims to provide an electrochemical device excellent in high temperature storage characteristics and cycling characteristics at high voltages, and a nonaqueous electrolyte for the electrochemical device. The present invention relates to an electrochemical device including: a…",
  "path": "/patents/978878",
  "publishedAt": "2014-02-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01G11/54",
    "DAIKIN IND LTD [JP]"
  ],
  "textContent": "The present invention aims to provide an electrochemical device excellent in high temperature storage characteristics and cycling characteristics at high voltages, and a nonaqueous electrolyte for the electrochemical device. The present invention relates to an electrochemical device including: a positive electrode; a negative electrode; and a nonaqueous electrolyte containing a nonaqueous solvent and an electrolyte salt, wherein the nonaqueous solvent contains a fluorinated linear carbonate represented by the formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒRfOCOOR€ƒ€ƒ€ƒ€ƒ€ƒ(1) (wherein Rf represents a C1-4 fluorinated alkyl group and R represents a C1-4 alkyl group), and further contains following compounds of (I) to (III) in a total amount of not more than 5000 ppm relative to the fluorinated linear carbonate: (I) a compound represented by the formula (2) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒRfOH€ƒ€ƒ€ƒ€ƒ€ƒ(2) (wherein Rf is defined as above); (II) a compound represented by the formula (3) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒROH€ƒ€ƒ€ƒ€ƒ€ƒ(3) (wherein R is defined as above); and (III) a compound represented by the formula (4) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒROCOCl€ƒ€ƒ€ƒ€ƒ€ƒ(4) (wherein R is defined as above).",
  "title": "ELECTROCHEMICAL DEVICE AND NONAQUEOUS ELECTROLYTE SOLUTION FOR ELECTROCHEMICAL DEVICE"
}