Patents by Inventor Kensuke Takechi
Kensuke Takechi 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: 11777135Abstract: 3-D magnesium voltaic cells have a magnesium anode coated on multiple opposing surfaces with a continuous protective/electrolyte layer that is ionically conductive and electronically insulating. The resulting protected 3-D magnesium anode is coated on multiple opposing surfaces with a continuous cathode layer that is electronically and ionically conductive, and includes a magnesium storage medium. Suitable magnesium anodes, in particular, magnesium foam anodes, can be made by pulsed galvanostatic deposition of magnesium on a copper substrate. The protective layer can be formed by electropolymerization of a suitable methylacrylate ester. The continuous cathode layer can be a slurry cathode having powders of an electronic conductor and a reversible magnesium storage component suspended in a magnesium electrolyte solution.Type: GrantFiled: May 14, 2020Date of Patent: October 3, 2023Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki KaishaInventors: Fuminori Mizuno, Rana Mohtadi, Oscar Tutusaus, Nikhilendra Singh, Timothy S. Arthur, Ruidong Yang, Kensuke Takechi, Chen Ling, Ruigang Zhang
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Patent number: 11335959Abstract: An anode for a lithium or lithium-ion cell, protected with an SEI by pre-treatment in an SEI-formation cell, is stable for cell cycling even in the presence of substantial water in the cell electrolyte. A method for making the protected anode includes forming an SEI on a lithium or lithium-ion electrode by performing multiple charge/discharge cycles on the electrode in a first cell having an SEI formation electrolyte to produce the protected anode. The SEI formation electrolyte includes an ionic liquid having at least one of eight organic cations.Type: GrantFiled: July 31, 2019Date of Patent: May 17, 2022Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Nikhilendra Singh, Timothy S. Arthur, Kensuke Takechi, Patrick Howlett, Maria Forsyth, Robert Kerr
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Patent number: 11189870Abstract: A lithium-air flow battery has minimal cathodic product precipitation, thus extending capacity. The lithium-air flow battery includes a flow electrolyte, flowing proximal to the air cathode, the flow electrolyte having little to no intrinsic lithium ion content. Operation of the lithium-air flow battery generates a lithium-ion concentration gradient across the flow electrolyte, with the lowest lithium-ion concentration adjacent to the air cathode. The extremely low lithium-ion concentration at the cathode, combined with the flow condition at the cathode, results in a minimum of solid product accumulation at the cathode, enabling the cathode to catalyze oxygen reduction for an extended duration.Type: GrantFiled: April 13, 2017Date of Patent: November 30, 2021Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., The Board of Trustees of the University of IllinoisInventors: Kensuke Takechi, Byoungsu Kim, Paul J. A. Kenis
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Patent number: 11133523Abstract: An aqueous electrolyte composition suitable for a lithium ion battery is provided. The aqueous electrolyte composition contains water, an ionic liquid which is a salt of a protonic cation and an anion comprising a fluoroalkylsulfonyl group and a lithium fluoroalkylsulfonyl salt. A lithium ion battery containing the aqueous electrolyte and a vehicle at least partially powered by the battery are also provided.Type: GrantFiled: July 28, 2017Date of Patent: September 28, 2021Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: Kensuke Takechi, Ruidong Yang
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Patent number: 10892523Abstract: An electrolyte composition has a fluoroalkylsulfonyl salt and water. The water is present, relative to the fluoroalkylsulfonyl salt, at a molar ratio within a range of 0.1:1 to 10:1, inclusive. This creates a “water-in-salt” in which individual water molecules are surrounded by salt rather than vice versa. Water contained in this environment is electrochemically stabilized relative to a bulk water. The electrolyte also has an organic carbonate present, relative to the fluoroalkylsulfonyl salt, at a molar ratio within a range of 0.1:1 to 50:1, inclusive. It has been discovered that inclusion of the organic carbonate further increases the electrochemical stability of the water within the “in-salt” environment.Type: GrantFiled: October 27, 2016Date of Patent: January 12, 2021Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Kensuke Takechi, Ruidong Yang
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Patent number: 10868339Abstract: An aqueous electrolyte composition suitable for a lithium secondary battery is provided. The aqueous electrolyte composition contains water; lithium bis(fluorosulfonyl) imide (LiFSI); and an ionic liquid comprising an organic cation and a bis(fluorosulfonyl) imide anion (FSI); wherein the ionic liquid is a liquid at 20° C. A lithium secondary battery containing the aqueous electrolyte and a vehicle at least partially powered by the battery are also provided.Type: GrantFiled: December 5, 2017Date of Patent: December 15, 2020Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Kensuke Takechi, Ruidong Yang
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Patent number: 10763543Abstract: A zinc ion hybrid battery is provided. The battery contains an anode capable of intercalation and de-intercalation of zinc ions, a cathode having a 4V active material capable of intercalation and de-intercalation of zinc ions, lithium ions and both zinc and lithium ions; and an aqueous electrolyte which comprises: water, and a zinc salt of an anion comprising a fluoroalkylsulfonyl group of formula (I): R—SO2-??(I) wherein R is a perfluoroalkyl group of 1-5 carbons.Type: GrantFiled: April 10, 2018Date of Patent: September 1, 2020Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: Ruidong Yang, Kensuke Takechi, Koji Suto
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Publication number: 20200274187Abstract: 3-D magnesium voltaic cells have a magnesium anode coated on multiple opposing surfaces with a continuous protective/electrolyte layer that is ionically conductive and electronically insulating. The resulting protected 3-D magnesium anode is coated on multiple opposing surfaces with a continuous cathode layer that is electronically and ionically conductive, and includes a magnesium storage medium. Suitable magnesium anodes, in particular, magnesium foam anodes, can be made by pulsed galvanostatic deposition of magnesium on a copper substrate. The protective layer can be formed by electropolymerization of a suitable methylacrylate ester. The continuous cathode layer can be a slurry cathode having powders of an electronic conductor and a reversible magnesium storage component suspended in a magnesium electrolyte solution.Type: ApplicationFiled: May 14, 2020Publication date: August 27, 2020Inventors: Fuminori Mizuno, Rana Mohtadi, Oscar Tutusaus, Nikhilendra Singh, Timothy S. Arthur, Ruidong Yang, Kensuke Takechi, Chen Ling, Ruigang Zhang
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Patent number: 10680280Abstract: 3-D magnesium voltaic cells have a magnesium anode coated on multiple opposing surfaces with a continuous protective/electrolyte layer that is ionically conductive and electronically insulating. The resulting protected 3-D magnesium anode is coated on multiple opposing surfaces with a continuous cathode layer that is electronically and ionically conductive, and includes a magnesium storage medium. Suitable magnesium anodes, in particular, magnesium foam anodes, can be made by pulsed galvanostatic deposition of magnesium on a copper substrate. The protective layer can be formed by electropolymerization of a suitable methylacrylate ester. The continuous cathode layer can be a slurry cathode having powders of an electronic conductor and a reversible magnesium storage component suspended in a magnesium electrolyte solution.Type: GrantFiled: September 26, 2017Date of Patent: June 9, 2020Assignees: Toyota Jidosha Kabushiki Kaisha, Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Fuminori Mizuno, Rana Mohtadi, Oscar Tutusaus, Nikhilendra Singh, Timothy S. Arthur, Ruidong Yang, Kensuke Takechi, Chen Ling, Ruigang Zhang
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Patent number: 10505219Abstract: An anode for a Li-ion cell, protected with an SEI by pre-treatment in an SEI-formation cell, is stable for cell cycling even in the presence of substantial water in the cell electrolyte. A method for making the protected anode includes forming an SEI on a lithium electrode by performing multiple charge/discharge cycles on the electrode in a first cell having an SEI formation electrolyte to produce the protected anode. The SEI formation electrolyte includes an ionic liquid having at least one of eight organic cations.Type: GrantFiled: May 26, 2017Date of Patent: December 10, 2019Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Deakin UniversityInventors: Nikhilendra Singh, Timothy S. Arthur, Kensuke Takechi, Patrick Howlett, Maria Forsyth, Robert Kerr
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Patent number: 10446875Abstract: An electrolyte for Li-ion and other secondary electrochemical cells includes an FSI anion and at least one of methyltriethylphosphonium; trimethylisobutylphosphonium; methyltributylphosphonium; and trihexyltetradecylphosphonium. The electrolyte uniquely enables stable cell cycling even when water is present in the electrolyte at levels as high as 5000 ppm. Methyltriethylphosphonium and trimethylisobutylphosphonium-containing electrolytes are particularly effective in this water-stabilizing capacity.Type: GrantFiled: May 26, 2017Date of Patent: October 15, 2019Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Deakin UniversityInventors: Nikhilendra Singh, Timothy S. Arthur, Kensuke Takechi, Patrick Howlett, Maria Forsyth, Robert Kerr, Fuminori Mizuno
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Publication number: 20190312303Abstract: A zinc ion hybrid battery is provided. The battery contains an anode capable of intercalation and de-intercalation of zinc ions, a cathode having a 4V active material capable of intercalation and de-intercalation of zinc ions, lithium ions and both zinc and lithium ions; and an aqueous electrolyte which comprises: water, and a zinc salt of an anion comprising a fluoroalkylsulfonyl group of formula (I): R—SO2—??(I) wherein R is a perfluoroalkyl group of 1-5 carbons.Type: ApplicationFiled: April 10, 2018Publication date: October 10, 2019Applicant: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: Ruidong Yang, Kensuke Takechi, Koji Suto
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Publication number: 20190173131Abstract: An aqueous electrolyte composition suitable for a lithium secondary battery is provided. The aqueous electrolyte composition contains water; lithium bis(fluorosulfonyl) imide (LiFSI); and an ionic liquid comprising an organic cation and a bis(fluorosulfonyl) imide anion (FSI); wherein the ionic liquid is a liquid at 20° C. A lithium secondary battery containing the aqueous electrolyte and a vehicle at least partially powered by the battery are also provided.Type: ApplicationFiled: December 5, 2017Publication date: June 6, 2019Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Kensuke TAKECHI, Ruidong YANG
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Publication number: 20190097260Abstract: 3-D magnesium voltaic cells have a magnesium anode coated on multiple opposing surfaces with a continuous protective/electrolyte layer that is ionically conductive and electronically insulating. The resulting protected 3-D magnesium anode is coated on multiple opposing surfaces with a continuous cathode layer that is electronically and ionically conductive, and includes a magnesium storage medium. Suitable magnesium anodes, in particular, magnesium foam anodes, can be made by pulsed galvanostatic deposition of magnesium on a copper substrate. The protective layer can be formed by electropolymerization of a suitable methylacrylate ester. The continuous cathode layer can be a slurry cathode having powders of an electronic conductor and a reversible magnesium storage component suspended in a magnesium electrolyte solution.Type: ApplicationFiled: September 26, 2017Publication date: March 28, 2019Inventors: Fuminori Mizuno, Rana Mohtadi, Oscar Tutusaus, Nikhilendra Singh, Timothy S. Arthur, Ruidong Yang, Kensuke Takechi, Chen Ling, Ruigang Zhang
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Publication number: 20190036151Abstract: An aqueous electrolyte composition suitable for a lithium ion battery is provided. The aqueous electrolyte composition contains water, an ionic liquid which is a salt of a protonic cation and an anion comprising a fluoroalkylsulfonyl group and a lithium fluoroalkylsulfonyl salt. A lithium ion battery containing the aqueous electrolyte and a vehicle at least partially powered by the battery are also provided.Type: ApplicationFiled: July 28, 2017Publication date: January 31, 2019Applicant: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: Kensuke TAKECHI, Ruidong YANG
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Patent number: 10193188Abstract: An aqueous electrolyte composition suitable for a lithium ion battery is provided. The aqueous electrolyte composition contains water, at least one of a linear ether and a cyclic ether and a lithium fluoroalkylsulfonyl salt. A lithium ion battery containing the aqueous electrolyte and a vehicle at least partially powered by the battery are also provided.Type: GrantFiled: August 31, 2016Date of Patent: January 29, 2019Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Kensuke Takechi, Ruidong Yang
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Publication number: 20180342773Abstract: An anode for a Li-ion cell, protected with an SEI by pre-treatment in an SEI-formation cell, is stable for cell cycling even in the presence of substantial water in the cell electrolyte. A method for making the protected anode includes forming an SEI on a lithium electrode by performing multiple charge/discharge cycles on the electrode in a first cell having an SEI formation electrolyte to produce the protected anode. The SEI formation electrolyte includes an ionic liquid having at least one of eight organic cations.Type: ApplicationFiled: May 26, 2017Publication date: November 29, 2018Inventors: Nikhilendra Singh, Timothy S. Arthur, Kensuke Takechi, Patrick Howlett, Maria Forsyth, Robert Kerr
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Publication number: 20180340000Abstract: An electrolyte for Li-ion and other secondary electrochemical cells includes an FSI anion and at least one of methyltriethylphosphonium; trimethylisobutylphosphonium; methyltributylphosphonium; and trihexyltetradecylphosphonium. The electrolyte uniquely enables stable cell cycling even when water is present in the electrolyte at levels as high as 5000 ppm. Methyltriethylphosphonium and trimethylisobutylphosphonium-containing electrolytes are particularly effective in this water-stabilizing capacity.Type: ApplicationFiled: May 26, 2017Publication date: November 29, 2018Inventors: Nikhilendra Singh, Timothy S. Arthur, Kensuke Takechi, Patrick Howlett, Maria Forsyth, Robert Kerr, Fuminori Mizuno
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Publication number: 20180301776Abstract: A lithium-air flow battery has minimal cathodic product precipitation, thus extending capacity. The lithium-air flow battery includes a flow electrolyte, flowing proximal to the air cathode, the flow electrolyte having little to no intrinsic lithium ion content. Operation of the lithium-air flow battery generates a lithium-ion concentration gradient across the flow electrolyte, with the lowest lithium-ion concentration adjacent to the air cathode. The extremely low lithium-ion concentration at the cathode, combined with the flow condition at the cathode, results in a minimum of solid product accumulation at the cathode, enabling the cathode to catalyze oxygen reduction for an extended duration.Type: ApplicationFiled: April 13, 2017Publication date: October 18, 2018Inventors: Kensuke Takechi, Byoungsu Kim, Paul J.A. Kenis
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Publication number: 20180123171Abstract: An electrolyte composition has a fluoroalkylsulfonyl salt and water. The water is present, relative to the fluoroalkylsulfonyl salt, at a molar ratio within a range of 0.1:1 to 10:1, inclusive. This creates a “water-in-salt” in which individual water molecules are surrounded by salt rather than vice versa. Water contained in this environment is electrochemically stabilized relative to a bulk water. The electrolyte also has an organic carbonate present, relative to the fluoroalkylsulfonyl salt, at a molar ratio within a range of 0.1:1 to 50:1, inclusive. It has been discovered that inclusion of the organic carbonate further increases the electrochemical stability of the water within the “in-salt” environment.Type: ApplicationFiled: October 27, 2016Publication date: May 3, 2018Inventors: Kensuke Takechi, Ruidong Yang