Patents by Inventor John T. Vaughey
John T. Vaughey 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: 11145905Abstract: A lithium-ion electrochemical cell comprises a first electrode, a second electrode comprising elemental silicon, a microporous separator membrane between the first and second electrodes, and an electrolyte in contact with the electrodes and the membrane. The electrolyte comprises a lithium salt at a concentration in the range of about 0.1 M to about 5 M, and an additional metal salt at a concentration in the range of about 0.001 to about 5 M dissolved in an organic solvent. The additional metal salt comprises a metal cation that can form a lithium-silicon-metal Zintl phase; and the first electrode comprises metallic lithium or a cathode active material capable of donating and accepting lithium ions to and from the second electrode during electrochemical cycling. Electrolytes for use with silicon-containing electrodes also are described.Type: GrantFiled: April 4, 2019Date of Patent: October 12, 2021Assignee: UCHICAGO ARGONNE, LLCInventors: John T. Vaughey, Binghong Han, Baris Key, Fulya Dogan Key, Chen Liao
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Publication number: 20200321655Abstract: A lithium-ion electrochemical cell comprises a first electrode, a second electrode comprising elemental silicon, a microporous separator membrane between the first and second electrodes, and an electrolyte in contact with the electrodes and the membrane. The electrolyte comprises a lithium salt at a concentration in the range of about 0.1 M to about 5 M, and an additional metal salt at a concentration in the range of about 0.001 to about 5 M dissolved in an organic solvent. The additional metal salt comprises a metal cation that can form a lithium-silicon-metal Zintl phase; and the first electrode comprises metallic lithium or a cathode active material capable of donating and accepting lithium ions to and from the second electrode during electrochemical cycling. Electrolytes for use with silicon-containing electrodes also are described.Type: ApplicationFiled: April 4, 2019Publication date: October 8, 2020Applicant: UCHICAGO ARGONNE, LLCInventors: John T. VAUGHEY, Binghong HAN, Baris KEY, Fulya Dogan KEY, Chen LIAO
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Patent number: 10593996Abstract: An electrochemical cell includes a high voltage cathode configured to operate at 1.5 volts or greater, an anode including Mg0, and an electrolyte including an at least one organic solvent, at least one magnesium salt, and at least one additive agent including a Lewis base, wherein the electrolyte is halogen-free.Type: GrantFiled: August 24, 2017Date of Patent: March 17, 2020Assignee: UCHICAGO ARGONNE, LLCInventors: John T. Vaughey, Niya Sa, Hao Wang, Baris Key
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Publication number: 20190067743Abstract: An electrochemical cell includes a high voltage cathode configured to operate at 1.5 volts or greater, an anode including Mg0, and an electrolyte including an at least one organic solvent, at least one magnesium salt, and at least one additive agent including a Lewis base, wherein the electrolyte is halogen-free.Type: ApplicationFiled: August 24, 2017Publication date: February 28, 2019Inventors: John T. Vaughey, Niya Sa, Hao Wang, Baris Key
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Patent number: 10090519Abstract: An electrochemical cell includes a cathode including an early transition metal fluoro-bronze; an anode including magnesium metal; and an electrolyte; wherein: the early transition metal fluoro-bronze is configured for intercalation of magnesium ions.Type: GrantFiled: April 20, 2015Date of Patent: October 2, 2018Assignees: UCHICAGO ARGONNE, LLC, NORTHWESTERN UNIVERSITYInventors: Kenneth Poeppelmeier, John T. Vaughey, Jared Incorvati, Lindsay Fuoco
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Patent number: 9698448Abstract: An electrochemical cell includes a high voltage cathode configured to operate at 1.5 volts or greater; an anode including Mg0; and an electrolyte including an ether solvent and a magnesium salt; wherein: a concentration of the magnesium salt in the ether is 1 M or greater.Type: GrantFiled: April 20, 2015Date of Patent: July 4, 2017Assignee: UCHICAGO ARGONNE, LLCInventors: Anthony K. Burrell, Niya Sa, Danielle Lee Proffit, Albert Lipson, Chen Liao, John T. Vaughey, Brian J. Ingram
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Patent number: 9647266Abstract: An isolated salt comprising a compound of formula (H2X)(TiO(Y)2) or a hydrate thereof, wherein X is 1,4-diazabicyclo[2.2.2]octane (DABCO), and Y is oxalate anion (C2O4?2), when heated in an oxygen-containing atmosphere at a temperature in the range of at least about 275° C. to less than about 400° C., decomposes to form an amorphous titania/carbon composite material comprising about 40 to about 50 percent by weight titania and about 50 to about 60 percent by weight of a carbonaceous material coating the titania. Heating the composite material at a temperature of about 400 to 500° C. crystallizes the titania component to anatase. The titania materials of the invention are useful as components of the cathode or anode of a lithium or lithium ion electrochemical cell.Type: GrantFiled: October 24, 2014Date of Patent: May 9, 2017Assignee: UCHICAGO ARGONNE, LLCInventors: John T. Vaughey, Andrew Jansen, Christopher D. Joyce
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Patent number: 9601801Abstract: An electrolyte includes compounds of formula M1Xn and M2Zm; and a solvent wherein M1 is Mg, Ca, Sr, Ba, Sc, Ti, Al, or Zn; M2 is Mg, Ca, Sr, Ba, Sc, Ti, Al, or Zn; X is a group forming a covalent bond with M1; Z is a halogen or pseudo-halogen; n is 1, 2, 3, 4, 5, or 6; and m is 1, 2, 3, 4, 5, or 6.Type: GrantFiled: July 18, 2014Date of Patent: March 21, 2017Assignee: UCHICAGO ARGONNE, LLCInventors: Chen Liao, Zhengcheng Zhang, Anthony Burrell, John T. Vaughey
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Publication number: 20160308203Abstract: An electrochemical cell includes a cathode including an early transition metal fluoro-bronze; an anode including magnesium metal; and an electrolyte; wherein: the early transition metal fluoro-bronze is configured for intercalation of magnesium ions.Type: ApplicationFiled: April 20, 2015Publication date: October 20, 2016Inventors: Kenneth Poeppelmeier, John T. Vaughey, Jared Incorvati, Lindsay Fuoco
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Publication number: 20160308248Abstract: An electrochemical cell includes a high voltage cathode configured to operate at 1.5 volts or greater; an anode including Mg0; and an electrolyte including an ether solvent and a magnesium salt; wherein: a concentration of the magnesium salt in the ether is 1 M or greater.Type: ApplicationFiled: April 20, 2015Publication date: October 20, 2016Inventors: Anthony K. Burrell, Niya Sa, Danielle Lee Proffit, Albert Lipson, Chen Liao, John T. Vaughey, Brian J. Ingram
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Patent number: 9300000Abstract: The present invention provides a non-aqueous redox flow battery comprising a negative electrode immersed in a non-aqueous liquid negative electrolyte, a positive electrode immersed in a non-aqueous liquid positive electrolyte, and a cation-permeable separator (e.g., a porous membrane, film, sheet, or panel) between the negative electrolyte from the positive electrolyte. During charging and discharging, the electrolytes are circulated over their respective electrodes. The electrolytes each comprise an electrolyte salt (e.g., a lithium or sodium salt), a transition-metal free redox reactant, and optionally an electrochemically stable organic solvent. Each redox reactant is selected from an organic compound comprising a conjugated unsaturated moiety, a boron cluster compound, and a combination thereof. The organic redox reactant of the positive electrolyte is selected to have a higher redox potential than the redox reactant of the negative electrolyte.Type: GrantFiled: February 28, 2012Date of Patent: March 29, 2016Assignee: UCHICAGO ARGONNE, LLCInventors: Andrew N. Jansen, John T. Vaughey, Zonghai Chen, Lu Zhang, Fikile R. Brushett
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Publication number: 20160020485Abstract: An electrolyte includes compounds of formula M1Xn and M2Zm; and a solvent wherein M1 is Mg, Ca, Sr, Ba, Sc, Ti, Al, or Zn; M2 is Mg, Ca, Sr, Ba, Sc, Ti, Al, or Zn; X is a group forming a covalent bond with M1; Z is a halogen or pseudo-halogen; n is 1, 2, 3, 4, 5, or 6; and m is 1, 2, 3, 4, 5, or 6.Type: ApplicationFiled: July 18, 2014Publication date: January 21, 2016Inventors: Chen Liao, Zhengcheng Zhang, Anthony Burrell, John T. Vaughey
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Publication number: 20150180027Abstract: Multi-component intermetallic negative electrodes prepared by electrochemical deposition for non-aqueous lithium cells and batteries are disclosed. More specifically, the invention relates to composite intermetallic electrodes comprising two or more compounds containing metallic or metaloid elements, at least one element of which can react with lithium to form binary, ternary, quaternary or higher order compounds, these compounds being in combination with one or more other metals that are essentially inactive toward lithium and act predominantly, but not necessarily exclusively, to the electronic conductivity of, and as current collection agent for, the electrode. The invention relates more specifically to negative electrode materials that provide an operating potential between 0.05 and 2.0 V vs. metallic lithium.Type: ApplicationFiled: January 27, 2015Publication date: June 25, 2015Applicant: UCHICAGO ARGONNE, LLCInventors: Michael M. THACKERAY, Lynn TRAHEY, John T. Vaughey
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Patent number: 8974959Abstract: Multi-component intermetallic negative electrodes prepared by electrochemical deposition for non-aqueous lithium cells and batteries are disclosed. More specifically, the invention relates to composite intermetallic electrodes comprising two or more compounds containing metallic or metaloid elements, at least one element of which can react with lithium to form binary, ternary, quaternary or higher order compounds, these compounds being in combination with one or more other metals that are essentially inactive toward lithium and act predominantly, but not necessarily exclusively, to the electronic conductivity of, and as current collection agent for, the electrode. The invention relates more specifically to negative electrode materials that provide an operating potential between 0.05 and 2.0 V vs. metallic lithium.Type: GrantFiled: July 16, 2009Date of Patent: March 10, 2015Assignee: UChicago Argonne, LLCInventors: Michael M. Thackeray, Lynn Trahey, John T. Vaughey
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Publication number: 20150044542Abstract: An isolated salt comprising a compound of formula (H2X)(TiO(Y)2) or a hydrate thereof, wherein X is 1,4-diazabicyclo[2.2.2]octane (DABCO), and Y is oxalate anion (C2O4?2), when heated in an oxygen-containing atmosphere at a temperature in the range of at least about 275° C. to less than about 400° C., decomposes to form an amorphous titania/carbon composite material comprising about 40 to about 50 percent by weight titania and about 50 to about 60 percent by weight of a carbonaceous material coating the titania. Heating the composite material at a temperature of about 400 to 500° C. crystallizes the titania component to anatase. The titania materials of the invention are useful as components of the cathode or anode of a lithium or lithium ion electrochemical cell.Type: ApplicationFiled: October 24, 2014Publication date: February 12, 2015Applicant: UCHICAGO ARGONNE, LLCInventors: John T. Vaughey, Andrew Jansen, Christopher D. Joyce
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Patent number: 8871374Abstract: An isolated salt comprising a compound of formula (H2X)(TiO(Y)2) or a hydrate thereof, wherein X is 1,4-diazabicyclo[2.2.2]octane (DABCO), and Y is oxalate anion (C2O4?2), when heated in an oxygen-containing atmosphere at a temperature in the range of at least about 275° C. to less than about 400° C., decomposes to form an amorphous titania/carbon composite material comprising about 40 to about 50 percent by weight titania and about 50 to about 60 percent by weight of a carbonaceous material coating the titania. Heating the composite material at a temperature of about 400 to 500° C. crystallizes the titania component to anatase. The titania materials of the invention are useful as components of the anode of a lithium or lithium ion electrochemical cell.Type: GrantFiled: October 28, 2010Date of Patent: October 28, 2014Assignee: Uchicago Argonne, LLCInventors: John T. Vaughey, Andrew Jansen, Christopher D. Joyce
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Publication number: 20130224538Abstract: The present invention provides a non-aqueous redox flow battery comprising a negative electrode immersed in a non-aqueous liquid negative electrolyte, a positive electrode immersed in a non-aqueous liquid positive electrolyte, and a cation-permeable separator (e.g., a porous membrane, film, sheet, or panel) between the negative electrolyte from the positive electrolyte. During charging and discharging, the electrolytes are circulated over their respective electrodes. The electrolytes each comprise an electrolyte salt (e.g., a lithium or sodium salt), a transition-metal free redox reactant, and optionally an electrochemically stable organic solvent. Each redox reactant is selected from an organic compound comprising a conjugated unsaturated moiety, a boron cluster compound, and a combination thereof. The organic redox reactant of the positive electrolyte is selected to have a higher redox potential than the redox reactant of the negative electrolyte.Type: ApplicationFiled: February 28, 2012Publication date: August 29, 2013Applicant: UCHICAGO ARGONNE LLCInventors: Andrew N. JANSEN, John T. VAUGHEY, Zonghai CHEN, Lu ZHANG, Fikile R. BRUSHETT
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Patent number: 8313721Abstract: This invention provides a lithium-oxygen or lithium-air electrochemical cell comprising a negative electrode, an electrolyte, and a porous activated positive electrode comprising lithium-rich electrocatalytic materials suitable for use in lithium-oxygen (air) cells and batteries. The activated positive electrode is produced by activating a precursor electrode formed from a material comprising one or more metal oxide compounds of general formula xLi2O.yMOz, in which 0<x?4, 0<y?1, and 0<z?3, in which M is typically, but not exclusively, a transition metal, excluding Li2MnO3 as a sole metal oxide compound in the precursor electrode. Li2O is extracted from the above-mentioned precursors to activate the electrode either by electrochemical methods or by chemical methods. The invention extends to batteries containing such electrochemical cells.Type: GrantFiled: March 25, 2010Date of Patent: November 20, 2012Assignee: UChicago Argonne, LLCInventors: Michael M. Thackeray, Christopher S. Johnson, Sun-Ho Kang, Lynn Trahey, John T. Vaughey
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Publication number: 20120107671Abstract: An isolated salt comprising a compound of formula (H2X)(TiO(Y)2) or a hydrate thereof, wherein X is 1,4-diazabicyclo[2.2.2]octane (DABCO), and Y is oxalate anion (C2O4?2), when heated in an oxygen-containing atmosphere at a temperature in the range of at least about 275° C. to less than about 400° C., decomposes to form an amorphous titania/carbon composite material comprising about 40 to about 50 percent by weight titania and about 50 to about 60 percent by weight of a carbonaceous material coating the titania. Heating the composite material at a temperature of about 400 to 500° C. crystallizes the titania component to anatase. The titania materials of the invention are useful as components of the anode of a lithium or lithium ion electrochemical cell.Type: ApplicationFiled: October 28, 2010Publication date: May 3, 2012Applicant: UCHICAGO ARGONNE, LLCInventors: John T. Vaughey, Andrew Jansen, Christopher D. Joyce
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Patent number: 8124280Abstract: This invention relates to intermetallic negative electrode compounds for non-aqueous, electrochemical lithium cells and batteries. More specifically, the invention relates to one or more electrode components or compositions, one of which contains the basic structural unit of a MM?3 intermetallic compound, in which M and M? are comprised of one or more metals. The MM?3 intermetallic electrode compounds can be mixed, blended or integrated with one or more other intermetallic compounds, such as isostructural M3M? compounds. The electrodes are of particular use in rechargeable lithium-ion cells and batteries in numerous applications such as portable electronic devices, medical devices, space, aeronautical and defense-related devices and in transportation applications such as electric and hybrid-electric vehicles.Type: GrantFiled: December 19, 2007Date of Patent: February 28, 2012Assignee: Uchicago Argonne, LLCInventors: Michael M Thackeray, John T. Vaughey