Organic electrolyte and organic electrolyte storage battery

• US 9,419,307 B2
• Filed: 11/20/2012
• Issued: 08/16/2016
• Est. Priority Date: 11/22/2011
• Status: Expired due to Fees

• Current Assignee: JX Nippon Oil & Energy Corporation (ENEOS Holdings, Inc.)
• Original Assignee: JX Nippon Oil & Energy Corporation (ENEOS Holdings, Inc.)
• Inventors: Nishizawa, Takeshi, Omaru, Atsuo
• Primary Examiner(s): Slifka, Sarah A
• Application Number:
  US14/355,627
• Publication Number:
  US 20140302387A1
• Time in Patent Office: 1,365 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0567 characterised by the additives
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 2300/0025 Organic electrolyte
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

An organic electrolyte improves the organic electrolyte storage battery of an electric vehicle in the initial storage capacity that affects the possible cruising range. The electrolyte includes a compound represented by formula (1) below and a compound represented by formula (2) below:

wherein R₁ to R₅ are each independently hydrogen, an alkyl group, a halogenated alkyl group, or halogen, R₆ is an alkylene group or a halogenated alkylene group and R₇ is a group having a symmetrical structure about R₆ as the rotational axis;
R₁—R₂—R₃  (2)
wherein R₂ is a vinyl group, a cyclic carbonic acid ester group, cyclic sulfite group, chain carbonic acid ester group or chain sulfite group, or —SO₃—, R₁ and R₃ are each independently hydrogen, a halogen, an alkyl group, a halogenated alkyl group, or a vinyl, phenyl or cyclohexyl group, and when R₂ is —SO₃—, R₁ and R₃ may bond to each other to form a ring.

Claims

1. An organic electrolyte comprising 1,1-diphenylethane and a compound represented by formula (2) below:

R₁—

R₂—

R₃ 

 

(2)

wherein R₂ is a vinyl group having no substituent or having a substituent bonded thereto, a cyclic carbonic acid ester group, cyclic sulfite group, chain carbonic acid ester group or chain sulfite group, having no substituent or having a substituent bonded thereto, or —

SO₃—

, R₁ and R₃ are each independently hydrogen, a halogen, a straight-chain or branched alkyl group having one to four carbon atoms, a halogen-containing straight-chain or branched alkyl group having one to four carbon atoms, or a vinyl, phenyl or cyclohexyl group, having no substituent or having a substituent bonded thereto, and when R₂ is —

SO₃—

, R₁ and R₃ may bond to each other to form a ring.

2. The organic electrolyte according to claim 1, wherein 1,1-diphenylethane is contained in an amount of 0.04 to 15 percent by mass in the organic electrolyte.

3. The organic electrolyte according to claim 1, wherein the compound represented by formula (2) is contained in an amount of 0.005 to 20 percent by mass in the organic electrolyte.

4. The organic electrolyte according to claim 1, wherein the blend ratio of 1,1-diphenylethane and the compound represented by formula (2) is 1:

0.01 to 10 by weight ratio.

5. The organic electrolyte according to claim 1, wherein the compound represented by formula (2) is 1,1-diphenylethylene.

6. The organic electrolyte according to claim 1, wherein the compound represented by formula (2) is fluoroethylene carbonate.

7. The organic electrolyte according to claim 1, wherein the compound represented by formula (2) is vinylene carbonate and contained in an amount of 0.005 to 7 percent by mass in the organic electrolyte.

8. The organic electrolyte according to claim 1, wherein the compound represented by formula (2) is vinylethylene carbonate and contained in an amount of 0.005 to 5 percent by mass in the organic electrolyte.

9. The organic electrolyte according to claim 1, wherein it contains a high-dielectric solvent in an amount of 5 to 45 percent by volume.

10. An organic electrolyte storage battery comprising the organic electrolyte according to claim 1.