Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS20040151951 A1
Publication typeApplication
Application numberUS 10/738,400
Publication dateAug 5, 2004
Filing dateDec 17, 2003
Priority dateDec 17, 2002
Also published asUS8168325, US20080070121
Publication number10738400, 738400, US 2004/0151951 A1, US 2004/151951 A1, US 20040151951 A1, US 20040151951A1, US 2004151951 A1, US 2004151951A1, US-A1-20040151951, US-A1-2004151951, US2004/0151951A1, US2004/151951A1, US20040151951 A1, US20040151951A1, US2004151951 A1, US2004151951A1
InventorsYoo-Eup Hyung, Donald Vissers, Khalil Amine
Original AssigneeThe University Of Chicago
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lithium based electrochemical cell systems
US 20040151951 A1
Abstract
Primary and secondary Li-ion and lithium-metal based electrochemical cell systems. Suppression of gas generation is achieved in the cell through the addition of an additive or additives to the electrolyte system of the respective cell, or to the cell whether it be a liquid, a solid- or plastized polymer electrolyte system. The gas suppression additives are preferably based on unsaturated hydrocarbons.
Images(4)
Previous page
Next page
Claims(20)
1. A lithium electrochemical cell system, comprising:
a secondary lithium ion cell including:
a lithium metal oxide positive electrode, and
a negative electrode having a crystalline carbon, a first electrolyte composed of a lithium salt, and a blend of at least two aprotic solvents;
a lithium ion secondary electrochemical cell including:
a lithium metal oxide positive electrode, and
a negative electrode having a crystalline carbon, a second electrolyte having a first degassing agent, and a blend of at least two aprotic solvents; and
a lithium-metal based primary or secondary electrochemical cell.
2. The cell system of claim 1, wherein the at least two aprotic solvents of the negative electrode of the secondary lithium ion cell are selected from the group consisting of ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate, propylene carbonate, diethyl carbonate, and an agent that reduces cell gassing.
3. The cell system of claim 2, wherein the lithium salt of the negative electrode of the secondary lithium ion cell is selected from the group consisting of LiPF6, LiBF4 and LiAsF6.
4. The cell system of claim 3, wherein the electrolyte of the lithium ion secondary electrochemical cell comprises at least one of a liquid gel and solid polymer with a dissolved salt selected from the group consisting of LiClO4, LiPF6, LiBF4, LiAsF6, LiCF3SO3, Li(CF3SO2)2N, Li(CF3SO2)3C, LiN(SO2C2F5)2, lithium alkyl fuorophosphate, lithium bis(chelato)borates and mixtures thereof.
5. The cell system of claim 3, wherein at least one of the lithium-metal based primary and the secondary electrochemical cell comprise:
a negative electrode including lithium metal;
a metal oxide positive electrode selected from the group consisting of LiCoO2, LiNiO2, LiNi1-xCoyMezO2, LiMn0.5Ni0.5O2, LiMn0.3Co0.3Ni0.3O2, LiFePO4, LiMn2O4, LiFeO2, LiMc0.5Mn1.5O4, vanadium oxide, and mixtures thereof, wherein Me is selected from the group consisting of Al, Mg, Ti, B, Ga, or Si, and Mc is a divalent metal;
at least one of a liquid electrolyte comprising a lithium salt, a liquid polymer, a solid polymer and a plastized electrolyte; and
a second degassing agent.
6. The cell system of claim 1, wherein the first degassing agent comprises a constituent from the class of organic compounds having the structure CH2═R1═CH2, wherein R1 is an aliphatic carbon chain of 1 to 7 carbons, either linear or branched.
7. The cell system of claim 1, wherein the first degassing agent comprises a compound having a formula selected from the group consisting of CH≡R1≡CH, CH2═R1, and CH≡R1, wherein R1 is an aliphatic carbon chain of 1 to 7 carbons.
8. The cell system of claim 1, wherein the first degassing agent comprises a compound or a blend of compounds having a formula selected from the group consisting of R2—C═R1═CH2, R2—C≡R1≡CH, R2—CH═R1 and R2—C≡R1, wherein R2 is an aromatic, a cyclic hydrocarbon, or an aromatic or cyclic hydrocarbon blended with a material selected from the group consisting of a pyrrole, a piperazine, a piperidine molecule, a vinyl phrrole, a vinyl piperazine, and a vinyl piperidine, and wherein R1 is an aliphatic carbon chain of 1 to 7 carbons.
9. The cell system of claim 1, wherein the first degassing agent comprises styrene carbonate, aromatic carbonates a blend of styrene carbonate and an aromatic carbonate, or a blend of styrene carbonate or an aromatic carbonate and a material selected from the group consisting of vinyl pyrrole, vinyl piperazine, vinyl piperidine, vinyl pyridine, pyrrole, a piperazine, a piperidine molecule, and a triphenyl phosphate.
10. The cell system of claim 1, wherein the first degassing agent comprises a compound selected from the group consisting of 2,3 dimethyl-1,3 butadiene, 1,3 butadiene, 2,3 dimethyl-1,4 pentadiene, and 1,5 hexadiene.
11. The cell system of claim 1, wherein the first degassing agent comprises a blend of 2,3 dimethyl-1,3 butadiene and vinyl ethylene carbonate.
12. The cell system of claim 1, wherein the first degassing agent comprises a blend of 2,3 dimethyl-1,4 pentadiene and vinyl pyridine.
13. The cell system of claim 1, wherein the first degassing agent comprises a blend of 1,5 hexadiene and piperazine.
14. The cell system of claim 1, wherein the first degassing agent comprises a blend of 2,3 dimethyl-1,3 butadiene and styrene.
15. The cell system of claim 1, wherein the first degassing agent comprises a blend of 2,3 dimethyl-1,3 butadiene and piperidine.
16. The cell system of claim 1, wherein the first degassing agent comprises a blend of hexadiene and vinyl pyridine.
17. The cell system of claim 1, wherein the first degassing agent comprises a blend of 2,3 dimethyl-1,3 butadiene and triphenyl phosphate.
18. The cell system of claim 1, wherein the first degassing agent comprises a blend of 2,3 dimethyl-1,3 butadiene and vinyl pyridine.
19. The cell system of claim 1, wherein the first degassing agent comprises styrene carbonate.
20. The cell system of claim 1, wherein the first degassing agent comprises a blend of styrene carbonate and vinyl piperazine.
Description
  • [0001]
    This application claims priority to U.S. Provisional Patent Application No. 60/434,214, filed on Dec. 17, 2002 and incorporated herein by reference.
  • [0002] This invention was made with government support under Contract No. W-31-109-ENG-38 awarded to the Department of Energy. The Government has certain rights in this invention.
  • BACKGROUND OF THE INVENTION
  • [0003]
    Gas generation in both Li-ion and lithium-metal based primary and secondary electrochemical cells may become a serious problem both during normal cell operation at room temperature and, more especially, at elevated temperatures. The consequence of gas build up includes cell can expansion and subsequent can rupture, leading to cell and or battery failure. For example, the gassing problem has been observed to be extremely serious in large electric vehicle type cell systems and in pouch type cell systems where rupture of the cell containment leads to serious safety problems. The gassing problem is also very serious in lithium-metal based primary cells using liquid and/or solid electrolytes in vivo applications such as for heart pacemakers and similar devices.
  • [0004]
    Because both the negative and positive electrodes in the charged states of nearly all lithium based electrochemical cell systems are thermodynamically unstable in respect to the electrolyte, it is especially important that electrolyte additives be developed to stabilize the electrodes by decreasing the kinetics of the respective electrode reactions and thereby reducing the gas generation.
  • SUMMARY OF THE INVENTION
  • [0005]
    This invention is directed toward the development of both primary and secondary Li-ion and lithium-metal based electrochemical cell systems in which the suppression of gas generation is achieved through the addition of an additive or additives to the electrolyte system of the respective cell, or to the cell whether it be a liquid, a solid- or plastized polymer electrolyte system. The gas suppression additives in this patent application are primarily based on unsaturated hydrocarbons and nitrogen containing organic materials.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0006]
    [0006]FIG. 1 shows cycle life characteristics of a Li-ion cell (ANL-1) containing 1.0 wt % 2,3 dimethyl-1,3 butadiene with the 1 M LiPF6 dissolved in ethylene carbonate (30%) and ethyl-methyl carbonate (70%);
  • [0007]
    [0007]FIG. 2 shows cycle life characteristics of a Li-ion cell (ANL-2) containing 2.0 wt % VEC and 1.0 wt % 2,3 dimethyl-1,3 butadiene with the 1 M LiPF6 dissolved in ethylene carbonate (20%), propylene carbonate (20%), and diethyl carbonate (60%); and
  • [0008]
    [0008]FIG. 3 shows changes of gas pressure change during ARC measurements of negative electrodes and electrolytes from Li-ion (ANL-1) cells with additives and a reference cell negative electrode and electrolyte from a (ANL-1) cell, but without additives.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0009]
    By use of appropriate additive or additives, the primary and secondary electrochemical Li-ion cells of this invention have minimal gassing and possess high specific energy and power, as well as excellent calendar and cycle life across a broad temperature range. The additives that are capable of ameliorating gas generation in the lithium based electrochemical cells include at least the following class of organic compounds, which will be described in more detail hereinafter: (a) CH2═R1═CH2, where R1 is an aliphatic carbon chain of 1 to 7 carbons, either linear or branched (b) CH≡R1≡CH, (c) CH2═R1, (d) CH≡R1, (e) R2—CH═R1═CH2, where R2 is an aromatic (toluene or benzene), a cyclic hydrocarbon, (f) R2—C≡R1≡CH, (g) R2—CH═R1, (h) R2—C≡R1, (i) styrene carbonate, (j) aromatic carbonates, (k) vinyl pyrrole, (l) vinyl piperazine, (m) vinyl piperidine, (n) vinyl pyridine, (o) triphenyl phosphate and blends thereof. These blends may involve other additives such as vinyl ethylene carbonate to protect against exfoliation in propylene carbonate based Li-ion electrolyte systems.
  • [0010]
    The present invention provides electrochemical lithium-based primary and secondary cells with excellent calendar life across a broad temperature, and includes cells with liquid and solid- and plastized polymer electrolytes.
  • [0011]
    [0011]FIG. 1 shows the improved cycle life characteristics of a Li-ion cell (ANL-1) containing 1.0 wt % 2,3 dimethyl-1,3 butadiene (DMB). The cell utilized a crystalline graphite anode, a LiNi0.8Co0.2O2 cathode and an electrolyte containing 1 M LiPF6 dissolved in a blend of ethylene carbonate and ethyl-methyl carbonate.
  • [0012]
    [0012]FIG. 2 shows the improved cycle life characteristics of a Li-ion cell (ANL-2) containing 2.0 wt % VEC and 1.0 wt % 2,3 dimethyl-1,3 butadiene with the 1 M LiPF6 dissolved in blend of ethylene carbonate, propylene carbonate, and dimethyl carbonate. The cell utilized the same cathode and anode as cell (ANL-1).
  • [0013]
    [0013]FIG. 3 shows the gas pressures developed by studies of the respective negative electrodes with electrolyte from cell (ANL-1) and compares the pressures developed by the negative electrodes and electrolyte from a similar cell that did not contain the 2,3 dimethyl-1,3 butadiene. The results of these studies indicate the additives significantly reduce the degree of gassing in the negative electrodes of cell (ANL-1), as compared to the negative electrode/electrolyte gassing from a similar cell but without the additive package. The additive effects in reducing pressure buildup are especially effective with the negative electrodes. The additives were also found to increase the activation energy and decrease the heat of reaction around the onset temperature that is believed to be the onset temperature for thermal runaway in the commercial lithium ion cells. The result of these studies indicate that these additives may be very effective in reducing gas buildup in high energy lithium-based cells for many different applications such as electric and hybrid vehicles, as well as in vivo applications such as for heart pacemakers and other implantable devices for the human body.
  • [0014]
    According to one embodiment of the invention, lithium electrochemical cell systems include:
  • [0015]
    (i) A secondary Li-ion cell comprising a lithium metal oxide positive electrode, a negative electrode containing a crystalline carbon like graphite, an electrolyte composed of a lithium salt, and a blend of at least two aprotic solvents. The solvents include ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate, propylene carbonate, or diethyl carbonate, and finally a compound that reduces cell gassing. The salts include LiPF6, LiBF4, LiAsF6, and other salts currently being used or being developed such as the lithium bisoxlatoborate (LiBOB) salts.
  • [0016]
    (ii) A Li-ion secondary electrochemical cell similar to the cell type (i) described above except that the electrolyte is either a liquid gel or solid polymer with a dissolved salt such as LiClO4, LiPF6, LiBF4, LiAsF6, LiCF3SO3, Li(CF3SO2)2N, Li(CF3SO2)3C, LiN(SO2C2F5)2, lithium alkyl fuorophosphate, lithium bis(chelato)borates and mixtures thereof; or a solid polymer blended with the electrolyte described above in cell type (i), called a plastized electrolyte. These electrolytes also contain a degassing agent.
  • [0017]
    (iii) A lithium-metal based primary or secondary electrochemical cell. This cell is similar to those described above except that they use lithium metal as the negative electrode, a metal oxide positive electrode such as LiCoO2, LiNiO2, LiNi1-xCoyMezO2, LiMn0.5Ni0.5O2, LiMn0.3Co0.3Ni0.3O2, LiFePO4, LiMn2O4, LiFeO2, LiMc0.5Mn1.5O4, vanadium oxide, and mixtures thereof, wherein Me is Al, Mg, Ti, B, Ga, or Si, and Mc is a divalent metal such as Fe, Co, Cu, Cr and Ni, and either a liquid electrolyte described in (i) liquid or solid polymer or plastized electrolyte described in cell types (ii) above and that contains a degassing agent.
  • [0018]
    The agents or additives described herein include the following class of organic compounds; (a) CH2═R1═CH2, where R1 is an aliphatic carbon chain of 1 to 7 carbons, either linear or branched (b) CH≡R1≡CH, (c) CH2═R1, (d) CH≡R1, (e) R2—C═R1═CH2, where R2 is an aromatic (toluene or benzene), a cyclic hydrocarbon, a pyrrole, a piperazine, or a piperidine molecule, (f) R2—C≡R1≡CH, (g) R2—CH═R1, (h) R2—C≡R1, (i) styrene carbonate, (j) aromatic carbonates, (k) vinyl pyrrole, (l) vinyl piperazine, (m) vinyl piperidine, (n) vinyl pyridine (o) triphenyl phosphate, (p) and blends thereof. These blends may involve other additives, such as vinyl ethylene carbonate, to protect against exfoliation in propylene carbonate based Li-ion electrolyte systems.
  • [0019]
    The agents or additives described herein can include, for example, 2,3 dimethyl-1,3 butadiene, 1,3 butadiene, is 2,3 dimethyl-1,4 pentadiene, 1,5 hexadiene, a blend of 2,3 dimethyl-1,3 butadiene and vinyl ethylene carbonate, and a blend of 2,3 dimethyl-1,4 pentadiene and vinyl pyridine. Other additives or agents include a blend of 1,5 hexadiene and piperazine, a blend of 2,3 dimethyl-1,3 butadiene and styrene, a blend of 2,3 dimethyl-1,3 butadiene and piperidine, a blend of hexadiene and vinyl pyridine, a blend of 2,3 dimethyl-1,3 butadiene and triphenyl phosphate, a blend of 2,3 dimethyl-1,3 butadiene and vinyl pyridine, styrene carbonate, and a blend of styrene carbonate and vinyl piperazine. Additionally, the additive or agent can also be a blend of two or more of the additives described above. According to one embodiment of the invention, the total concentration of additives ranges from 0.1 to 25 wt %, with an optimum concentration varying from 0.1 to 10 wt %.
  • [0020]
    It should be understood that the above description of the invention and the specific examples and embodiments therein, while indicating the preferred embodiments of the present invention, are given only by demonstration and not limitation. Many changes and modifications within the scope of the present invention may therefore be made without departing from the spirit of the invention, and the invention includes all such changes and modifications.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3567601 *Sep 12, 1968Mar 2, 1971Firestone Tire & Rubber CoProcess for polymerizing tetrahydrofuran
US4489145 *Oct 18, 1983Dec 18, 1984Abraham Kuzhikalail MLithium battery
US5654114 *Mar 23, 1995Aug 5, 1997Fuji Photo Film Co., Ltd.Nonaqueous secondary battery
US5962168 *Apr 27, 1998Oct 5, 1999Motorola, Inc.Polymer electrolyte solvent for electrochemical cell
US5993993 *Apr 6, 1998Nov 30, 1999Space Systems/Loral, Inc.Unregulated spacecraft electrical bus
US6245461 *May 24, 1999Jun 12, 2001DaimlerchryslerBattery package having cubical form
US6507378 *May 11, 1999Jan 14, 2003Nitto Denki CorporationReflection type liquid-crystal display unit
US6942949 *Aug 12, 2002Sep 13, 2005Lg Chem, Ltd.Rechargeable lithium electrochemical cell
US20020160271 *Dec 31, 2001Oct 31, 2002The Board Of Reagents Of The University Of OklahomaConductive polyamine-based electrolyte
US20030157413 *Feb 15, 2002Aug 21, 2003Chen Chun-HuaLithium ion battery with improved safety
US20040001302 *Jun 27, 2003Jan 1, 2004Nisshinbo Industries, Inc.Electrical component and method for manufacturing the same
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7238453Apr 25, 2005Jul 3, 2007Ferro CorporationNon-aqueous electrolytic solution with mixed salts
US7255965Apr 25, 2005Aug 14, 2007Ferro CorporationNon-aqueous electrolytic solution
US7261979Mar 9, 2005Aug 28, 2007A123 Systems, Inc.Lithium secondary cell with high charge and discharge rate capability
US7348101Feb 7, 2005Mar 25, 2008A123 Systems, Inc.Lithium secondary cell with high charge and discharge rate capability
US7682754May 26, 2005Mar 23, 2010Novolyte Technologies, Inc.Nonaqueous electrolytic solution for electrochemical cells
US7727669May 26, 2005Jun 1, 2010Novolyte Technologies Inc.Triazine compounds for removing acids and water from nonaqueous electrolytes for electrochemical cells
US7799461Aug 16, 2007Sep 21, 2010A123 Systems, Inc.Lithium secondary cell with high charge and discharge rate capability
US7968235 *May 28, 2004Jun 28, 2011Uchicago Argonne LlcLong life lithium batteries with stabilized electrodes
US8076032 *Feb 10, 2005Dec 13, 2011West Robert CElectrolyte including silane for use in electrochemical devices
US8080338Sep 13, 2010Dec 20, 2011A123 Systems, Inc.Lithium secondary cell with high charge and discharge rate capability
US8187752Mar 13, 2009May 29, 2012Envia Systems, Inc.High energy lithium ion secondary batteries
US8273484May 26, 2005Sep 25, 2012Novolyte Technologies, Inc.Nitrogen silylated compounds as additives in non-aqueous solutions for electrochemical cells
US8277974Apr 24, 2009Oct 2, 2012Envia Systems, Inc.High energy lithium ion batteries with particular negative electrode compositions
US8426046May 8, 2009Apr 23, 2013Robert Bosch GmbhLi-ion battery with over-charge/over-discharge failsafe
US8426052May 8, 2009Apr 23, 2013Robert Bosch GmbhLi-ion battery with porous anode support
US8551661May 26, 2011Oct 8, 2013Uchicago Argonne, LlcLong life lithium batteries with stabilized electrodes
US8617745Sep 11, 2006Dec 31, 2013A123 Systems LlcLithium secondary cell with high charge and discharge rate capability and low impedance growth
US8673490Sep 12, 2012Mar 18, 2014Envia Systems, Inc.High energy lithium ion batteries with particular negative electrode compositions
US8697288May 24, 2012Apr 15, 2014Envia Systems, Inc.High energy lithium ion secondary batteries
US8741484Apr 2, 2010Jun 3, 2014Envia Systems, Inc.Doped positive electrode active materials and lithium ion secondary battery constructed therefrom
US8765295 *Dec 12, 2011Jul 1, 2014Robert C. WestElectrolyte including silane for use in electrochemical devices
US8765306Mar 26, 2010Jul 1, 2014Envia Systems, Inc.High voltage battery formation protocols and control of charging and discharging for desirable long term cycling performance
US8808404Aug 1, 2012Aug 19, 2014Basf CorporationMethod for making electrochemical cells
US8916294Sep 29, 2009Dec 23, 2014Envia Systems, Inc.Fluorine doped lithium rich metal oxide positive electrode battery materials with high specific capacity and corresponding batteries
US8993177Dec 4, 2009Mar 31, 2015Envia Systems, Inc.Lithium ion battery with high voltage electrolytes and additives
US9012073Jul 14, 2009Apr 21, 2015Envia Systems, Inc.Composite compositions, negative electrodes with composite compositions and corresponding batteries
US9012096Jan 24, 2006Apr 21, 2015Uchicago Argonne, LlcLong life lithium batteries with stabilized electrodes
US9083062Aug 1, 2011Jul 14, 2015Envia Systems, Inc.Battery packs for vehicles and high capacity pouch secondary batteries for incorporation into compact battery packs
US9093722Sep 30, 2010Jul 28, 2015Uchicago Argonne, LlcFunctionalized ionic liquid electrolytes for lithium ion batteries
US9159990Aug 17, 2012Oct 13, 2015Envia Systems, Inc.High capacity lithium ion battery formation protocol and corresponding batteries
US9166222Nov 2, 2010Oct 20, 2015Envia Systems, Inc.Lithium ion batteries with supplemental lithium
US9553301Aug 24, 2015Jan 24, 2017Envia Systems, Inc.High capacity lithium ion battery formation protocol and corresponding batteries
US20050019670 *May 28, 2004Jan 27, 2005Khalil AmineLong life lithium batteries with stabilized electrodes
US20050233219 *Feb 7, 2005Oct 20, 2005Gozdz Antoni SLithium secondary cell with high charge and discharge rate capability
US20050233220 *Mar 9, 2005Oct 20, 2005Gozdz Antoni SLithium secondary cell with high charge and discharge rate capability
US20060147809 *Jan 24, 2006Jul 6, 2006The University Of ChicagoLong life lithium batteries with stabilized electrodes
US20060236528 *Aug 3, 2005Oct 26, 2006Ferro CorporationNon-aqueous electrolytic solution
US20060240322 *Apr 25, 2005Oct 26, 2006Ferro CorporationNon-aqueous electrolytic solution with mixed salts
US20060240327 *Apr 25, 2005Oct 26, 2006Ferro CorporationNon-aqueous electrolytic solution
US20060269844 *May 26, 2005Nov 30, 2006Ferro CorporationTriazine compounds for removing acids and water from nonaqueous electrolytes for electrochemical cells
US20060269845 *May 26, 2005Nov 30, 2006Ferro CorporationNonaqueous electrolytic solution for electrochemical cells
US20060269846 *May 26, 2005Nov 30, 2006Ferro CorporationNonaqueous electrolytic solution for electrochemicals cells
US20070111099 *Nov 15, 2005May 17, 2007Nanjundaswamy Kirakodu SPrimary lithium ion electrochemical cells
US20070166617 *Sep 11, 2006Jul 19, 2007A123 Systems, Inc.Lithium secondary cell with high charge and discharge rate capability and low impedance growth
US20070231706 *May 16, 2007Oct 4, 2007Ferro CorporationNon-Aqueous Electrolytic Solution With Mixed Salts
US20080169790 *Aug 16, 2007Jul 17, 2008A123 Systems, Inc.Lithium secondary cell with high charge and discharge rate capability
US20090029248 *Jan 17, 2006Jan 29, 2009Masaki DeguchiNonaqueous electrolyte and secondary battery containing same
US20090263707 *Mar 13, 2009Oct 22, 2009Buckley James PHigh Energy Lithium Ion Secondary Batteries
US20090305131 *Apr 24, 2009Dec 10, 2009Sujeet KumarHigh energy lithium ion batteries with particular negative electrode compositions
US20100086854 *Sep 29, 2009Apr 8, 2010Sujeet KumarFluorine doped lithium rich metal oxide positive electrode battery materials with high specific capacity and corresponding batteries
US20100119942 *Jul 14, 2009May 13, 2010Sujeet KumarComposite compositions, negative electrodes with composite compositions and corresponding batteries
US20100285355 *May 8, 2009Nov 11, 2010Robert Bosch GmbhLi-ION BATTERY WITH POROUS ANODE SUPPORT
US20100285357 *May 8, 2009Nov 11, 2010Robert Bosch GmbhLi-ION BATTERY WITH OVER-CHARGE/OVER-DISCHARGE FAILSAFE
US20110017528 *Jul 24, 2009Jan 27, 2011Sujeet KumarLithium ion batteries with long cycling performance
US20110076572 *Sep 23, 2010Mar 31, 2011Khalil AmineNon-aqueous electrolytes for electrochemical cells
US20110086248 *Jun 3, 2009Apr 14, 2011Kensuke NakuraAssembled battery
US20110111298 *Nov 11, 2009May 12, 2011Lopez Herman ACoated positive electrode materials for lithium ion batteries
US20110136019 *Dec 4, 2009Jun 9, 2011Shabab AmiruddinLithium ion battery with high voltage electrolytes and additives
US20110236751 *Mar 26, 2010Sep 29, 2011Shabab AmiruddinHigh voltage battery formation protocols and control of charging and discharging for desirable long term cycling performance
US20120115041 *Dec 12, 2011May 10, 2012West Robert CElectrochemical device having electrolyte including disiloxane
US20120135313 *Dec 12, 2011May 31, 2012West Robert CElectrolyte including silane for use in electrochemical devices
WO2007057840A3 *Nov 14, 2006Sep 7, 2007Gillette CoPrimary lithium ion electrochemical cells
WO2010129859A1 *May 7, 2010Nov 11, 2010Robert Bosch GmbhLi-ion battery with over-charge/over-discharge failsafe
Classifications
U.S. Classification429/9, 429/149, 429/326, 429/231.95, 429/224, 429/231.5, 429/231.4, 429/231.3, 429/221, 429/223, 429/332, 429/57, 429/231.1, 429/231.6, 429/331
International ClassificationH01M16/00, H01M10/34, H01M10/52, H01M10/42, H01M6/16, H01M4/52, H01M10/36, H01M4/525, H01M10/052, H01M10/0567
Cooperative ClassificationH01M10/0567, H01M10/52, H01M10/4235, H01M4/525, H01M10/052, H01M6/168
European ClassificationH01M10/0567, H01M10/42M, H01M10/052, H01M6/16E5, H01M10/52
Legal Events
DateCodeEventDescription
Apr 12, 2004ASAssignment
Owner name: UNIVERSITY OF CHICAGO, THE, ILLINOIS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HYUNG, YOO-EUP;VISSERS, DONALD R.;AMINE, KHALIL;REEL/FRAME:015203/0732
Effective date: 20040123
Jun 4, 2004ASAssignment
Owner name: ENERGY, UNITED STATES DEPARTMENT OF, DISTRICT OF C
Free format text: CONFIRMATORY LICENSE;ASSIGNOR:UNIVERSITY OF CHICAGO, THE;REEL/FRAME:015411/0732
Effective date: 20040511
Sep 28, 2006ASAssignment
Owner name: U CHICAGO ARGONNE LLC, ILLINOIS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNIVERSITY OF CHICAGO, THE;REEL/FRAME:018385/0618
Effective date: 20060925
Owner name: U CHICAGO ARGONNE LLC,ILLINOIS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNIVERSITY OF CHICAGO, THE;REEL/FRAME:018385/0618
Effective date: 20060925