Patents by Inventor Donald R. Vissers
Donald R. Vissers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9012096Abstract: The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In certain electrolytes, the alkali metal salt is a bis(chelato)borate and the additives include substituted or unsubstituted linear, branched or cyclic hydrocarbons comprising at least one oxygen atom and at least one aryl, alkenyl or alkynyl group. In other electrolytes, the additives include a substituted aryl compound or a substituted or unsubstituted heteroaryl compound wherein the additive comprises at least one oxygen atom. There are also provided methods of making the electrolytes and batteries employing the electrolytes. The invention also provides for electrode materials.Type: GrantFiled: January 24, 2006Date of Patent: April 21, 2015Assignee: UChicago Argonne, LLCInventors: Khalil Amine, Jun Liu, Donald R. Vissers, Wenquan Lu
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Patent number: 8551661Abstract: The present invention relates to non-aqueous electrolytes having stabilization additives and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, a first additive that is a substituted or unsubstituted organoamine, substituted or unsubstituted alkane, substituted or unsubstituted alkene, or substituted or unsubstituted aryl compound, and/or a second additive that is a metal (chelato)borate. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes, the new electrolytes provide batteries with improved calendar and cycle life.Type: GrantFiled: May 26, 2011Date of Patent: October 8, 2013Assignee: Uchicago Argonne, LLCInventors: Khalil Amine, Jaekook Kim, Donald R. Vissers
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Publication number: 20120115041Abstract: One example of the disiloxanes include a backbone with a first silicon and a second silicon. The first silicon is linked to a first substituent selected from a group consisting of: a first side chain that includes a cyclic carbonate moiety; a first side chain that includes a poly(alkylene oxide) moiety; and a first cross link links the disiloxane to a second siloxane and that includes a poly(alkylene oxide) moiety. In some instance, the second silicon is linked to a second substituent selected from a group consisting of: a second side chain that includes a cyclic carbonate moiety, and a second side chain that includes a poly(alkylene oxide) moiety.Type: ApplicationFiled: December 12, 2011Publication date: May 10, 2012Inventors: Robert C. West, Khalil Amine, Zhengcheng Zhang, Qingzheng Wang, Nicholas Agostino Antonio Rossi, Donald R. Vissers
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Patent number: 8168325Abstract: A lithium based electrochemical cell system includes a positive electrode; a negative electrode; an electrolyte; and a degassing agent.Type: GrantFiled: November 20, 2007Date of Patent: May 1, 2012Assignee: UChicago Argonne, LLCInventors: Yoo-Eup Hyung, Donald R. Vissers, Khalil Amine
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Patent number: 8076031Abstract: One example of the disiloxanes include a backbone with a first silicon and a second silicon. The first silicon is linked to a first substituent selected from a group consisting of: a first side chain that includes a cyclic carbonate moiety; a first side chain that includes a poly(alkylene oxide) moiety; and a first cross link links the disiloxane to a second siloxane and that includes a poly(alkylene oxide) moiety. In some instance, the second silicon is linked to a second substituent selected from a group consisting of: a second side chain that includes a cyclic carbonate moiety, and a second side chain that includes a poly(alkylene oxide) moiety.Type: GrantFiled: February 10, 2005Date of Patent: December 13, 2011Inventors: Robert C. West, Khalil Amine, Zhengcheng Zhang, Qingzheng Wang, Nicholas Agostino Antonio Rossi, Donald R. Vissers
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Publication number: 20110287326Abstract: The present invention relates to non-aqueous electrolytes having stabilization additives and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, a first additive that is a substituted or unsubstituted organoamine, substituted or unsubstituted alkane, substituted or unsubstituted alkene, or substituted or unsubstituted aryl compound, and/or a second additive that is a metal (chelato)borate. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes, the new electrolytes provide batteries with improved calendar and cycle life.Type: ApplicationFiled: May 26, 2011Publication date: November 24, 2011Inventors: Khalil Amine, Jaekook Kim, Donald R. Vissers
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Patent number: 7968235Abstract: The present invention relates to non-aqueous electrolytes having stabilization additives and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, a first additive that is a substituted or unsubstituted organoamine, substituted or unsubstituted alkane, substituted or unsubstituted alkene, or substituted or unsubstituted aryl compound, and/or a second additive that is a metal(chelato)borate. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes, the new electrolytes provide batteries with improved calendar and cycle life.Type: GrantFiled: May 28, 2004Date of Patent: June 28, 2011Assignee: UChicago Argonne LLCInventors: Khalil Amine, Jaekook Kim, Donald R. Vissers
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Patent number: 7695860Abstract: Disclosed is a nonaqueous liquid electrolyte comprising poly(siloxane-g-3 ethylene oxide) and its synthesis. This electrolyte provides significant safety, improved electrochemical stability, improved conductivity, lower impedance, and lower manufacturing costs.Type: GrantFiled: March 20, 2003Date of Patent: April 13, 2010Assignee: Quallion LLCInventors: Khalil Amine, Robert C. West, Qingzheng Wang, Bookeun Oh, Donald R. Vissers, Hisashi Tsukamoto
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Patent number: 7507503Abstract: The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In some embodiments the additives include a substituted or unsubstituted cyclic or spirocyclic hydrocarbon containing at least one oxygen atom and at least one alkenyl or alkynyl group. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes or olivine or carbon-coated olivine electrodes, the new electrolytes provide batteries with improved calendar and cycle life.Type: GrantFiled: December 8, 2005Date of Patent: March 24, 2009Assignee: U Chicago Argonne LLCInventors: Khalil Amine, Jun Liu, Donald R. Vissers, Wenquan Lu
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Patent number: 7498102Abstract: Disclosed is a nonaqueous and nonvolatile liquid type polymeric electrolyte comprising poly(siloxane-g-ethylene oxide). This electrolyte provides significant safety and stability. The present invention solves the problems of volatility, flammability and chemical reactivity of lithium ion type electrolytes. The disclosed electrolyte exhibits excellent stability, conductivity and low impedance characteristics. The electrolyte comprises a new class of structural siloxane polymers with one or more poly(ethylene oxide) side chains. The inorganic siloxanes comprising the main backbone of the copolymers are thermally very stable and resistant to decomposition by heat. Because the main chain of the disclosed class of electrolytes is an Si—O linkage, initiation of the combustion cycle is inhibited or prevented.Type: GrantFiled: June 12, 2002Date of Patent: March 3, 2009Inventors: Bookeun Oh, Khalil Amine, Yoo-Eup Hyung, Donald R. Vissers, Hisashi Tsukamoto
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Patent number: 7226702Abstract: Disclosed is an improved solid electrolyte made of an interpenetrating network type solid polymer comprised of two compatible phases: a crosslinked polymer for mechanical strength and chemical stability, and an ionic conducting phase. The highly branched siloxane polymer of the present invention has one or more poly(ethylene oxide) (“PEO”) groups as a side chain. The PEO group is directly grafted to silicon atoms in the siloxane polymer. This kind of branched type siloxane polymer is stably anchored in the network structure and provides continuous conducting paths in all directions throughout the IPN solid polymer electrolyte. Also disclosed is a method of making an electrochemical cell incorporating the electrolyte. A cell made accordingly has an extremely high cycle life and electrochemical stability.Type: GrantFiled: January 22, 2003Date of Patent: June 5, 2007Assignee: Quallion LLCInventors: Bookeun Oh, Khalil Amine, Donald R. Vissers
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Patent number: 7026074Abstract: A lithium battery with improved safety that utilizes one or more additives in the battery electrolyte solution wherein a lithium salt is dissolved in an organic solvent, which may contain propylene, carbonate. For example, a blend of 2 wt % triphenyl phosphate (TPP), 1 wt % diphenyl monobutyl phosphate (DMP) and 2 wt % vinyl ethylene carbonate additives has been found to significantly enhance the safety and performance of Li-ion batteries using a LiPF6 salt in EC/DEC electrolyte solvent. The invention relates to both the use of individual additives and to blends of additives such as that shown in the above example at concentrations of 1 to 4-wt % in the lithium battery electrolyte. This invention relates to additives that suppress gas evolution in the cell, passivate graphite electrode and protect it from exfoliating in the presence of propylene carbonate solvents in the electrolyte, and retard flames in the lithium batteries.Type: GrantFiled: February 15, 2002Date of Patent: April 11, 2006Assignee: The University of ChicagoInventors: Chun-hua Chen, Yoo Eup Hyung, Donald R. Vissers, Khalil Amine
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Publication number: 20040197665Abstract: Disclosed is a nonaqueous liquid electrolyte comprising poly(siloxane-g-3 ethylene oxide) and its synthesis. This electrolyte provides significant safety, improved electrochemical stability, improved conductivity, lower impedance, and lower manufacturing costs.Type: ApplicationFiled: February 23, 2004Publication date: October 7, 2004Inventors: Khalil Amine, Robert C West, Qingzheng Wang, Bookeun Oh, Donald R Vissers, Hisashi Tsukamoto
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Publication number: 20040151951Abstract: 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.Type: ApplicationFiled: December 17, 2003Publication date: August 5, 2004Applicant: The University of ChicagoInventors: Yoo-Eup Hyung, Donald R. Vissers, Khalil Amine
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Publication number: 20030180624Abstract: Disclosed is an improved solid electrolyte made of an interpenetrating network type solid polymer comprised of two compatible phases: a crosslinked polymer for mechanical strength and chemical stability, and an ionic conducting phase. The highly branched siloxane polymer of the present invention has one or more poly(ethylene oxide) (“PEO”) groups as a side chain. The PEO group is directly grafted to silicon atoms in the siloxane polymer. This kind of branched type siloxane polymer is stably anchored in the network structure and provides continuous conducting paths in all directions throughout the IPN solid polymer electrolyte. Also disclosed is a method of making an electrochemical cell incorporating the electrolyte. A cell made accordingly has an extremely high cycle life and electrochemical stability.Type: ApplicationFiled: March 22, 2002Publication date: September 25, 2003Inventors: Bookeun Oh, Khalil Amine, Yoo-Eup Hyung, Donald R. Vissers
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Publication number: 20030180625Abstract: Disclosed is a nonaqueous and nonvolatile liquid type polymeric electrolyte comprising poly(siloxane-g-ethylene oxide). This electrolyte provides significant safety and stability. The present invention solves the problems of volatility, flammability and chemical reactivity of lithium ion type electrolytes. The disclosed electrolyte exhibits excellent stability, conductivity and low impedance characteristics. The electrolyte comprises a new class of structural siloxane polymers with one or more poly(ethylene oxide) side chains. The inorganic siloxanes comprising the main backbone of the copolymers are thermally very stable and resistant to decomposition by heat. Because the main chain of the disclosed class of electrolytes is an Si—O linkage, initiation of the combustion cycle is inhibited or prevented.Type: ApplicationFiled: June 12, 2002Publication date: September 25, 2003Inventors: Bookeun Oh, Khalil Amine, Yoo-Eup Hyung, Donald R. Vissers, Hisashi Tsukamoto
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Publication number: 20030157413Abstract: A lithium battery with improved safety that utilizes one or more additives in the battery electrolyte solution wherein a lithium salt is dissolved in an organic solvent, which may contain propylene, carbonate. For example, a blend of 2 wt % triphenyl phosphate (TPP), 1 wt % diphenyl monobutyl phosphate (DMP) and 2 wt % vinyl ethylene carbonate additives has been found to significantly enhance the safety and performance of Li-ion batteries using a LiPF6 salt in EC/DEC electrolyte solvent. The invention relates to both the use of individual additives and to blends of additives such as that shown in the above example at concentrations of 1 to 4-wt % in the lithium battery electrolyte. This invention relates to additives that suppress gas evolution in the cell, passivate graphite electrode and protect it from exfoliating in the presence of propylene carbonate solvents in the electrolyte, and retard flames in the lithium batteries.Type: ApplicationFiled: February 15, 2002Publication date: August 21, 2003Inventors: Chun-Hua Chen, Yoo Eup Hyung, Donald R. Vissers, Khalil Amine
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Publication number: 20030047717Abstract: A cathode material and processes of preparation, including the composition, the steps of mixing and heating to obtain a crystallographically phase pure layered material which is a substituted lithium nickel oxide compositions of LiuNivTiwAlxCoyOz, where u is between about 0.8 and about 1.2, the v is between about 0.5 and about 0.99, w is between about 0.01 and about 0.5, x is between about 0.00 and about 0.5, y is between about 0.00 and about 0.5, and z is between about 1.8 and 2.3. Such a substituted lithium nickel oxide may be used for energy conversion and storage, particularly for high power application.Type: ApplicationFiled: August 28, 2001Publication date: March 13, 2003Inventors: Jaekook Kim, Donald R. Vissers, Khalil Amine
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Patent number: 6322928Abstract: Improved lithium vanadium oxide formulations are presented having a nominal formula of LixV3−&dgr;M&dgr;Oy. Herein preferred cation doped vanadium oxide materials, electrodes using such materials, and electrochemical cells including at least one electrode therein comprising such materials are provided.Type: GrantFiled: September 23, 1999Date of Patent: November 27, 2001Assignee: 3M Innovative Properties CompanyInventors: Michael M. Thackeray, Arthur J. Kahaian, Keith D. Kepler, Donald R. Vissers
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Patent number: 6004697Abstract: A method of improving certain vanadium oxide formulations is presented. The method concerns fluorine doping formulations having a nominal formula of LiV.sub.3 O.sub.8. Preferred average formulations are provided wherein the average oxidation state of the vanadium is at least 4.6. Herein preferred fluorine doped vanadium oxide materials, electrodes using such materials, and batteries including at least one electrode therein comprising such materials are provided.Type: GrantFiled: December 5, 1997Date of Patent: December 21, 1999Assignees: Minnesota Mining & Manufacturing Co., Hydro-Quebec CorporationInventors: Michael M. Thackeray, Arthur J. Kahaian, Donald R. Visser, Dennis W. Dees, Roy Benedek