Patents by Inventor STEPHEN E. BURKHARDT
STEPHEN E. BURKHARDT 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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Publication number: 20230395858Abstract: The present disclosure is related to an electrolyte composition comprising from 30 to 80% by weight of CH3CO2CH2CF2H, from 10 to 60% by weight of ethylene carbonate or propylene carbonate, from 0.1 to 1.0% by weight of lithium bis(oxalate) borate, from 0.2 to 2.0 moles/L of lithium hexafluorophosphate and from 0.1 to 2% by weight of fluoroethylene carbonate, where the amounts of compounds are based on the total weight of the electrolyte composition, and where when used as an electrolyte in a lithium-ion battery, the composition exhibits an 80% cycle life of at least 250 at a cycling rate is 240 mA/g.Type: ApplicationFiled: August 17, 2023Publication date: December 7, 2023Applicant: Solvay SAInventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Mark Gerrit Roelofs, Charles J. Dubois
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Patent number: 11489198Abstract: Disclosed herein are electrolyte compositions comprising a fluorinated solvent, at least one silyl oxalate represented by the formulas RR?Si(C2O4), wherein R and R? are each the same or different from each other and independently selected from C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C6-C10 aryl radical, optionally comprising at least one substituent selected from halogen, hydroxyl, alkoxy, carbonyl, and carboxyl groups; and LiPF6. Also disclosed herein are electrolyte compositions comprising a fluorinated solvent and a lithium oxalato phosphate salt represented by the formula LiPF(6-2q)(C2O4)q, wherein q is 1, 2 or 3; wherein the oxalato phosphate salt comprises at least a portion that is derived from at least one silyl oxalate as defined herein. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: GrantFiled: July 27, 2017Date of Patent: November 1, 2022Assignee: Solvay SAInventors: Kenneth Gene Moloy, Stephen E. Burkhardt, Kostantinos Kourtakis, Brian Levy-Polis
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Patent number: 11476502Abstract: Disclosed herein are electrolyte compositions comprising: a) a first solvent comprising a cyclic carbonate; b) a second solvent comprising a non-fluorinated acyclic carbonate; c) at least one electrolyte component selected from: i) a fluorinated acyclic carboxylic acid ester; ii) a fluorinated acyclic carbonate; iii) a fluorinated acyclic ether; or iv) a mixture thereof; and d) an electrolyte salt; wherein the electrolyte component is present in the electrolyte composition in the range of from about 0.05 weight percent to about 10 weight percent, based on the total weight of the first and second solvents.Type: GrantFiled: July 6, 2017Date of Patent: October 18, 2022Assignee: Solvay SAInventors: Stephen E. Burkhardt, Jun J. Liu, Sang-Hwan Kim, Kostantinos Kourtakis
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Patent number: 11374260Abstract: Disclosed herein are electrolyte compositions comprising a fluorinated solvent, a fluorinated sulfone, at least one component selected from a borate salt, and/or an oxalate salt, and/or a fluorinated cyclic carbonate, and at least one electrolyte salt. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or combinations thereof. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: GrantFiled: June 3, 2016Date of Patent: June 28, 2022Inventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Mark Gerrit Roelofs
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Patent number: 11289738Abstract: Described herein are: An electrolyte composition comprising a) a fluorinated solvent for an electrolyte salt; b) an oxalate salt represented by the Formula LiPF(6-2q)(Ox)q, wherein Ox is an oxalate moiety and q is 1, 2 or 3; and c) optionally, at least one electrolyte salt. In some embodiments, the electrolyte composition comprises a mole ratio of Ox/P in the range of from 0.001 to 5. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: GrantFiled: June 3, 2016Date of Patent: March 29, 2022Assignee: Solvay SAInventors: Samuel David Arthur, Stephen E. Burkhardt, Kostantinos Kourtakis, Brian Levy-Polis, Jun J. Liu, Mark Gerrit Roelofs
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Patent number: 11038196Abstract: Disclosed herein are electrolyte compositions comprising at least one electrolyte component comprising a cyclic carbonate, such as a fluoroethylene carbonate, and at least one additive comprising a 6-member ring heterocyclic sulfate, such as a 1,3 propylene sulfate. The disclosed electrolyte compositions can comprise additional electrolyte components, such as fluorinated acyclic carboxylic acid esters, and additional additives, such as lithium boron compounds, and cyclic carboxylic acid anhydrides, such as maleic anhydride. The improved battery performances, which include high temperature cycling conditions and/or room temperature stability, make these electrolyte compositions useful in electrochemical cells, such as lithium ion batteries.Type: GrantFiled: September 12, 2017Date of Patent: June 15, 2021Assignee: Solvay SAInventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Brian Levy-Polis
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Publication number: 20200321657Abstract: Disclosed herein are electrolyte compositions comprising a fluorinated solvent, a fluorinated sulfone, at least one component selected from a borate salt, and/or an oxalate salt, and/or a fluorinated cyclic carbonate, and at least one electrolyte salt. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or combinations thereof. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: ApplicationFiled: June 3, 2016Publication date: October 8, 2020Inventors: Stephen E. BURKHARDT, Kostantinos KOURTAKIS, Mark Gerrit ROELOFS
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Patent number: 10686220Abstract: Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.Type: GrantFiled: April 4, 2014Date of Patent: June 16, 2020Assignee: Solvay SAInventors: Stephen E. Burkhardt, Xudong Chen, Charles J. Dubois, William L. Holstein, Kostantinos Kourtakis, Mark Gerrit Roelofs
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Patent number: 10673096Abstract: Described are electrolyte compositions comprising a fluorinated solvent, an organic carbonate, a sultone, and optionally a borate. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or mixtures thereof. The organic carbonate may be fluorinated or non-fluorinated. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: GrantFiled: August 12, 2015Date of Patent: June 2, 2020Assignee: Solvay SAInventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Jun J. Liu, Mark Gerrit Roelofs, Sang-Hwan Kim
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Publication number: 20190334197Abstract: Disclosed herein are electrolyte compositions comprising at least one electrolyte component comprising a cyclic carbonate, such as a fluoroethylene carbonate, and at least one additive comprising a 6-member ring heterocyclic sulfate, such as a 1,3 propylene sulfate. The disclosed electrolyte compositions can comprise additional electrolyte components, such as fluorinated acyclic carboxylic acid esters, and additional additives, such as lithium boron compounds, and cyclic carboxylic acid anhydrides, such as maleic anhydride. The improved battery performances, which include high temperature cycling conditions and/or room temperature stability, make these electrolyte compositions useful in electrochemical cells, such as lithium ion batteries.Type: ApplicationFiled: September 12, 2017Publication date: October 31, 2019Inventors: Stephen E. BURKHARDT, Kostantinos KOURTAKIS, Brian LEVY-POLIS
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Publication number: 20190296398Abstract: Disclosed herein are electrolyte compositions comprising: a) a first solvent comprising a cyclic carbonate; b) a second solvent comprising a non-fluorinated acyclic carbonate; c) at least one electrolyte component selected from: i) a fluorinated acyclic carboxylic acid ester; ii) a fluorinated acyclic carbonate; iii) a fluorinated acyclic ether; or iv) a mixture thereof; and d) an electrolyte salt; wherein the electrolyte component is present in the electrolyte composition in the range of from about 0.05 weight percent to about 10 weight percent, based on the total weight of the first and second solvents.Type: ApplicationFiled: July 6, 2017Publication date: September 26, 2019Inventors: Stephen E. BURKHARDT, Jun J. LIU, Sang-Hwan KIM, Kostantinos KOURTAKIS
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Publication number: 20190245243Abstract: Disclosed herein are electrolyte compositions comprising a fluorinated solvent, at least one silyl oxalate represented by the formulas RR?Si(C2O4), wherein R and R? are each the same or different from each other and independently selected from C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C6-C10 aryl radical, optionally comprising at least one substituent selected from halogen, hydroxyl, alkoxy, carbonyl, and carboxyl groups; and LiPF6. Also disclosed herein are electrolyte compositions comprising a fluorinated solvent and a lithium oxalato phosphate salt represented by the formula LiPF(6-2q)(C2O4)q, wherein q is 1, 2 or 3; wherein the oxalato phosphate salt comprises at least a portion that is derived from at least one silyl oxalate as defined herein. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: ApplicationFiled: July 27, 2017Publication date: August 8, 2019Inventors: Kenneth Gene MOLOY, Stephen E. BURKHARDT, Kostantinos KOURTAKIS, Brian LEVY-POLIS
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Publication number: 20190058221Abstract: Disclosed herein are non-aqueous electrolyte compositions comprising a fluorinated solvent, a carbonate co-solvent, at least one 2-furanone derivative, and at least one electrolyte salt. In some embodiments, the electrolyte compositions further comprise a cyclic sulfate. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or combinations thereof. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: ApplicationFiled: September 1, 2016Publication date: February 21, 2019Applicant: SOLVAY SAInventors: Stephen E. BURKHARDT, Stephen MANZO
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Publication number: 20180241086Abstract: Described herein are: An electrolyte composition comprising a) a fluorinated solvent for an electrolyte salt; b) an oxalate salt represented by the Formula LiPF(6-2q)(Ox)q, wherein Ox is an oxalate moiety and q is 1, 2 or 3; and c) optionally, at least one electrolyte salt. In some embodiments, the electrolyte composition comprises a mole ratio of Ox/P in the range of from 0.001 to 5. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: ApplicationFiled: June 3, 2016Publication date: August 23, 2018Inventors: Samuel David ARTHUR, Stephen E. BURKHARDT, Kostantinos KOURTAKIS, Brian LEVY-POLIS, Jun J. LIU, Mark Gerrit ROELOFS
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Patent number: 9908992Abstract: Curing fluoroelastomers with curing agents of formulas (I), (II), (III), and (IV): wherein each of R1, R2, R3, R4, R6, R7, R8, and R9, is selected from the group consisting of H; halogen atom; C1 to C4 alkyl groups in which the alkyl group is linear, branched, or cyclic; OR?; and aromatic groups; R5 is H; and R? is selected from the group consisting of C1 to C4 alkyl groups in which the alkyl group is linear, branched, or cyclic; and phenyl.Type: GrantFiled: September 26, 2015Date of Patent: March 6, 2018Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Peter Anthony Fox, Stephen E Burkhardt, Christopher P Junk, Shuhong Wang
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Publication number: 20170373360Abstract: This invention is related to articles containing a heat source and a heat spreader to conduct heat from the heat source. The heat spreader comprises a core of one or more drawn UHMWPE sheets. The sheets are planar, i.e., have dimensions in two directions that are considerably greater than that of the third dimension. No solvent is used during the drawing process. The draw ratio is typically 100 to 150. The density of a sheet is less than 0.90 g/cm3. A sheet has good thermal conductivity k? the direction of the draw. k? is at least 30 W/mK. The thermal conductivity perpendicular to the plane of the sheet k? is greatly reduced. k? is less than. 0.20 W/mK.Type: ApplicationFiled: May 23, 2017Publication date: December 28, 2017Inventors: Stephen E. Burkhardt, Owen C. Compton, Thomas D. Lantzer, Jeffrey Scott Meth, James Neal Singletary
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Publication number: 20170250445Abstract: Described are electrolyte compositions comprising a fluorinated solvent, an organic carbonate, a sultone, and optionally a borate. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or mixtures thereof. The organic carbonate may be fluorinated or non-fluorinated. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.Type: ApplicationFiled: August 12, 2015Publication date: August 31, 2017Applicant: Solvay SAInventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Jun J. Liu, Mark Gerrit Roelofs, Sang-Hwan Kim
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Publication number: 20170088693Abstract: Curing fluoroelastomers with curing agents of formulas (I), (II), (III), and (IV): wherein each of R1, R2, R3, R4, R6, R7, R8, and R9, is selected from the group consisting of H; halogen atom; C1 to C4 alkyl groups in which the alkyl group is linear, branched, or cyclic; OR?; and aromatic groups; R5 is H; and R? is selected from the group consisting of C1 to C4 alkyl groups in which the alkyl group is linear, branched, or cyclic; and phenyl.Type: ApplicationFiled: September 26, 2015Publication date: March 30, 2017Inventors: Peter Anthony Fox, STEPHEN E. BURKHARDT, CHRISTOPHER V. JUNK, SHUHONG WANG
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Publication number: 20160087307Abstract: The present disclosure is related to an electrolyte composition comprising a fluorinated ester solvent, a non-fluorinated carbonate, a lithium/boron compound and a lithium salt. Electrochemical cells comprising the electrolyte solvent have increased cycle life.Type: ApplicationFiled: September 19, 2014Publication date: March 24, 2016Inventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Mark Gerrit Roelofs, Charles J Dubois
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Publication number: 20140302401Abstract: Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.Type: ApplicationFiled: April 4, 2014Publication date: October 9, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: STEPHEN E. BURKHARDT, Xudong Chen, Charles J. Dubois, William L. Holstein, Kostantinos Kourtakis, Mark Gerrit Roelofs