- Patent Number:
10950,891
- Appl. No:
16/445140
- Application Filed:
June 18, 2019
- نبذة مختصرة :
New homopolymers and copolymers of diester-based polymers have been synthesized. When these polymers are combined with electrolyte salts, such polymer electrolytes have shown excellent electrochemical oxidation stability in lithium battery cells. Their stability along with their excellent ionic conductivities make them especially suitable as electrolytes in high energy density lithium battery cells.
- Inventors:
Robert Bosch GmbH (Stuttgart, DE)
- Assignees:
Robert Bosch GmbH (Stuttgart, DE)
- Claim:
1. A polymer, comprising: a first diester-based polymer having a structure: [chemical expression included] wherein: each Z and Z 1 is selected independently from the group consisting of —F, —CF 3 , and —CF 2 CF 3 ; each X is selected independently from the group consisting of —F and —CF 3 ; a is an integer that ranges from 1 to 2; c and d are each integers that range independently from 1 to 10; and n is an integer that ranges from 1 to 1000.
- Claim:
2. The polymer of claim 1 further comprising an electrolyte salt, wherein the polymer is an electrolyte.
- Claim:
3. A positive electrode comprising: a positive electrode active material; and a catholyte comprising the electrolyte according to claim 2 ; wherein the positive electrode active material particles and the catholyte are mixed together.
- Claim:
4. The positive electrode of claim 3 wherein the catholyte further comprises a second polymer selected from the group consisting of polystyrene, hydrogenated polystyrene, polymethacrylate, poly(methyl methacrylate), polyvinylpyridine, polyvinylcyclohexane, polyimide, polyamide, polypropylene, polyolefins, poly(t-butyl vinyl ether), poly(cyclohexyl methacrylate), poly(cyclohexyl vinyl ether), poly(t-butyl vinyl ether), polyethylene, poly(phenylene oxide), poly(2,6-dimethyl-1,4-phenylene oxide), poly(phenylene sulfide), poly(phenylene sulfide sulfone), poly(phenylene sulfide ketone), poly(phenylene sulfide amide), polysulfone, polyvinylidene fluoride, and combinations thereof, and wherein the catholyte is a copolymer.
- Claim:
5. The positive electrode of claim 3 wherein the catholyte is crosslinked.
- Claim:
6. The positive electrode of claim 3 wherein the positive electrode active material is selected from the group consisting of lithium iron phosphate, lithium metal phosphate, divanadium pentoxide, lithium nickel cobalt aluminum oxide, lithium nickel cobalt manganese oxide, magnesium-rich lithium nickel cobalt manganese oxide, lithium manganese spinel, lithium nickel manganese spinel, and combinations thereof.
- Claim:
7. The positive electrode of claim 3 wherein the electrolyte salt is a lithium salt.
- Claim:
8. An electrochemical cell, comprising: an anode configured to absorb and release lithium ions; a cathode comprising cathode active material particles, an electronically-conductive additive, and a first catholyte; a current collector adjacent to an outside surface of the cathode; and a separator region between the anode and the cathode, the separator region comprising a separator electrolyte configured to facilitate movement of lithium ions back and forth between the anode and the cathode; wherein the first catholyte comprises the electrolyte according to claim 2 , and the electrolyte salt is a lithium salt.
- Claim:
9. The electrochemical cell of claim 8 wherein the first catholyte further comprises a second polymer selected from the group consisting of polystyrene, hydrogenated polystyrene, polymethacrylate, poly(methyl methacrylate), polyvinylpyridine, polyvinylcyclohexane, polyimide, polyamide, polypropylene, polyolefins, poly(t-butyl vinyl ether), poly(cyclohexyl methacrylate), poly(cyclohexyl vinyl ether), poly(t-butyl vinyl ether), polyethylene, poly(phenylene oxide), poly(2,6-dimethyl-1,4-phenylene oxide), poly(phenylene sulfide), poly(phenylene sulfide sulfone), poly(phenylene sulfide ketone), poly(phenylene sulfide amide), polysulfone, polyvinylidene fluoride, and combinations thereof, and wherein the first catholyte is a copolymer.
- Claim:
10. The electrochemical cell of claim 8 wherein the first catholyte and the separator electrolyte are the same.
- Claim:
11. The electrochemical cell of claim 8 wherein the separator electrolyte comprises a solid polymer electrolyte.
- Claim:
12. The electrochemical cell of claim 8 further comprising an overlayer between the cathode and the separator region, the overlayer comprising a second catholyte, the second catholyte comprising the electrolyte according to claim 2 .
- Claim:
13. The electrochemical cell of claim 12 wherein the first catholyte and the second catholyte are the same.
- Claim:
14. The electrochemical cell of claim 8 wherein the anode comprises a material selected from the group consisting of lithium metal, lithium alloy, lithium titanate, graphite and silicon.
- Claim:
15. The electrochemical cell of claim 8 wherein the first catholyte is crosslinked.
- Claim:
16. The polymer of claim 1 wherein the polymer is crosslinked.
- Claim:
17. The polymer of claim 16 further comprising an electrolyte salt, wherein the polymer is an electrolyte.
- Claim:
18. The polymer of claim 1 , further comprising: a second polymer selected from the group consisting of polystyrene, hydrogenated polystyrene, polymethacrylate, poly(methyl methacrylate), polyvinylpyridine, polyvinylcyclohexane, polyimide, polyamide, polypropylene, polyolefins, poly(t-butyl vinyl ether), poly(cyclohexyl methacrylate), poly(cyclohexyl vinyl ether), poly(t-butyl vinyl ether), polyethylene, poly(phenylene oxide), poly(2,6-dimethyl-1,4-phenylene oxide), poly(phenylene sulfide), poly(phenylene sulfide sulfone), poly(phenylene sulfide ketone), poly(phenylene sulfide amide), polysulfone, polyvinylidene fluoride, and combinations thereof; wherein the first polymer and the second polymer form a copolymer.
- Claim:
19. The polymer of claim 18 further comprising an electrolyte salt, wherein the copolymer is an electrolyte.
- Claim:
20. The polymer of claim 18 wherein the copolymer is crosslinked.
- Claim:
21. The polymer of claim 18 wherein the copolymer is a block copolymer comprising a first block comprising the first polymer and a second block comprising the second polymer.
- Claim:
22. The polymer of claim 21 further comprising an electrolyte salt, wherein the copolymer is an electrolyte.
- Patent References Cited:
5275750 January 1994 Sato et al.
8268197 September 2012 Singh et al.
8563168 October 2013 Balsara et al.
8889301 November 2014 Balsara et al.
9054372 June 2015 Singh et al.
9136562 September 2015 Singh et al.
9893337 February 2018 Pratt et al.
2002/0102464 August 2002 Yoshida et al.
2003/0031932 February 2003 Okumura et al.
2004/0130061 July 2004 Lavoie et al.
2005/0054804 March 2005 Dams
2007/0287822 December 2007 Pearson et al.
2010/0105794 April 2010 Dietliker et al.
2012/0321966 December 2012 Wallin et al.
2013/0084459 April 2013 Larson
2013/0149616 June 2013 Lee et al.
2013/0189592 July 2013 Roumi et al.
2017/0187063 June 2017 Pistorino et al.
2018/0248225 August 2018 Cheng
2018/0316043 November 2018 Jung et al.
102924704 February 2013
1620884 May 2008
2657003 October 2013
- Other References:
Singh et al., “Bridged Tetraquaternary Salts from N,N-polyfluoroalkyl-4,4-bipyridine”, Inorganic Chemistry Article, Jul. 12, 2003, Idaho, 6 pages. cited by applicant
Zhang et al., “Direct methylation and trifluoroethylation of imidazole and pyridine derivatives”, ChemComm, Aug. 5, 2003, South Carolina, 2 pages. cited by applicant
Bonhote et al., “Hydrophoic, Highly Conductive Ambient-Temperature Molten Salts”, Inorganic Chemistry Article, Aug. 15, 1995, Switzerland, 11 pages. cited by applicant
Madria et al., “Ionic liquid electrolytes for lithium batteries: Synthesis, electrochemical, and cytotoxicity studies”, Journal of Power Sources, Feb. 9, 2013, Missouri, 8 pages. cited by applicant
Xue et al., “Ionic Liquids with Fluorine-Containing Cations”, Microreview, Apr. 27, 2005, Idaho, 8 pages. cited by applicant
Singh et al., “New dense fluoroalkyl-substituted imidazolium ionic liquids”, Tetrahedron Letters, Oct. 30, 2002, Idaho, 3 pages. cited by applicant
Singh et al., “Syntheses of the first N-mono- and N,N-dipolyfluoroalkyl-4,4-bipyridinium compounds”, ChemComm, Idaho, May 9, 2003, 2 pages. cited by applicant
Del Sesto et al., “Tetraalkylphosphonium-based ionic liquids”, Journal of Organometallic Chemisty, Oct. 28, 2004, Colorado, 7 pages. cited by applicant
Garcia, “Polyoxalates from biorenewable diols via Oxalate Metathesis Polymerization,” Polymer Chemistry, Iss. 3, 2014 [retrieved on Nov. 15, 2017]. Retrieved from the Internet: pp. S1-S4, 2-17. 20-22 supplementary information. cited by applicant
International Search Report for PCT/US2017/047709 from USPTO Search Authority. cited by applicant
Lee, “Ionic conductivity in the poly(ethylene malonate) / lithium triflate system,” Solid State Ionics 138 (2001) 273-276. cited by applicant
- Primary Examiner:
Fraser, Stewart A
- Attorney, Agent or Firm:
Brooks Kushman P.C.
- الرقم المعرف:
edspgr.10950891
Processing Request
No Comments.