Patents by Inventor TAKAYUKI NAKATSUTSUMI
TAKAYUKI NAKATSUTSUMI 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).
-
Publication number: 20240063436Abstract: A non-aqueous secondary battery including a positive electrode including a lithium-transition metal composite oxide containing at least nickel as a transition metal, a negative electrode including a silicon-containing material, a separator interposed between the positive electrode and the negative electrode, and a liquid electrolyte. The liquid electrolyte contains a sultone compound and an isocyanate compound, and 1?A/B?10 is satisfied, where a concentration of the sultone compound in the liquid electrolyte is A mass %, and a concentration of the isocyanate compound in the liquid electrolyte is B mass %.Type: ApplicationFiled: February 10, 2022Publication date: February 22, 2024Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takayuki Nakatsutsumi, Masaki Deguchi
-
Patent number: 11894521Abstract: A secondary battery includes a negative electrode containing a lithium silicate phase and silicon particles dispersed in the lithium silicate phase and an electrolytic solution containing a fluorine-containing linear carboxylic acid ester represented by R1—(CO)O—CH2—R2 (wherein R1 is an alkyl group and R2 is an alkyl group in which at least one hydrogen atom is substituted with fluorine).Type: GrantFiled: February 21, 2019Date of Patent: February 6, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazuhiro Iida, Takayuki Nakatsutsumi, Atsushi Fukui
-
Patent number: 11876253Abstract: An alkaline dry battery, including: a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolyte. The positive electrode includes a manganese dioxide, the negative electrode includes zinc and/or a zinc alloy, and the alkaline electrolyte includes at least one sulfonyl group-containing anion selected from the group consisting of a bis(perfluoroalkylsulfonyl)imide anion, a bis(fluorosulfonyl)imide anion, and a fluorosulfonate anion.Type: GrantFiled: October 25, 2019Date of Patent: January 16, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takayuki Nakatsutsumi, Yasuyuki Kusumoto, Yasufumi Takahashi, Atsushi Fukui
-
Publication number: 20230369610Abstract: A lithium primary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode contains a positive electrode material mixture that contains LixMnO2 (0?x?0.05). The negative electrode contains at least one of metal lithium and a lithium alloy. The non-aqueous electrolyte contains at least one of a cyclic imide component and a parole component as a first component and an oxalate phosphate complex component as a second component. The concentration of the first component in the non-aqueous electrolyte is 1 mass % or less. The concentration of the second component in the non-aqueous electrolyte is 6 mass % or less. The mass ratio of the first component relative to the second component in the non-aqueous electrolyte is 0.02 or more and 10 or less.Type: ApplicationFiled: April 27, 2021Publication date: November 16, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kohei Saito, Takayuki Nakatsutsumi, Masanobu Takeuchi
-
Patent number: 11799067Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyO?F?, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, ?, and ? satisfy the following requirements: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2. The additive is at least one selected from dinitrile compounds and diisocyanate compounds.Type: GrantFiled: September 16, 2020Date of Patent: October 24, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takayuki Nakatsutsumi, Ryuichi Natsui, Nobuhiko Hojo
-
Patent number: 11721800Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a lithium hexafluorophosphate and an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyO?F?. The additive is at least one selected from the group consisting of difluorophosphates, tetrafluoroborates, bis(oxalate)borate salts, bis(trifluoromethanesulfonyl)imide salts, and bis(fluorosulfonyl)imide salts.Type: GrantFiled: September 24, 2020Date of Patent: August 8, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takayuki Nakatsutsumi, Ryuichi Natsui, Nobuhiko Hojo
-
Patent number: 11710816Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a nonaqueous solvent. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyO?F?, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, ?, and ? satisfy the following requirements: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2. The nonaqueous solvent includes a solvent having at least one fluoro group.Type: GrantFiled: September 14, 2020Date of Patent: July 25, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takayuki Nakatsutsumi, Ryuichi Natsui, Nobuhiko Hojo
-
Patent number: 11646446Abstract: A rechargeable battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The electrolyte solution contains water and one or more lithium salts, and the lithium salts include lithium fluorophosphate.Type: GrantFiled: November 30, 2018Date of Patent: May 9, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kenji Matsubara, Nobuhiko Hojo, Hiroyuki Matsumoto, Takayuki Nakatsutsumi, Kazuhiro Iida, Atsushi Fukui
-
Publication number: 20230111757Abstract: A lithium primary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode contains a positive electrode material mixture including LixMnO2 where 0 ? x ? 0.05. The negative electrode contains at least one of metal lithium and a lithium alloy. The non-aqueous electrolyte contains an oxalate borate complex component and a cyclic imide component. In the non-aqueous electrolyte, the concentration of the oxalate borate complex component is 5.5 mass% or less, and the concentration of the cyclic imide component is 1 mass% or less. The mass ratio of the cyclic imide component to the oxalate borate complex component contained in the non-aqueous electrolyte is 0.02 or more and 10 or less.Type: ApplicationFiled: October 15, 2020Publication date: April 13, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kohei Saito, Takayuki Nakatsutsumi, Atsushi Fukui
-
Publication number: 20230109610Abstract: A lithium primary battery includes a positive electrode, a negative electrode, and a liquid non-aqueous electrolyte. The positive electrode contains a positive electrode material mixture including LixMnO2 where 0?x?0.05. The negative electrode contains at least one of metal lithium and a lithium alloy. The liquid non-aqueous electrolyte contains a cyclic imide component and an organic silyl borate component. The concentration of the cyclic imide component in the liquid non-aqueous electrolyte is 1 mass % or less, the concentration of the organic silyl borate component in the liquid non-aqueous electrolyte is 5.5 mass % or less, and the mass ratio of the cyclic imide component to the organic silyl borate component contained in the liquid non-aqueous electrolyte is 0.02 or more and 10 or less.Type: ApplicationFiled: December 10, 2020Publication date: April 6, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kohei Saito, Takayuki Nakatsutsumi, Atsushi Fukui
-
Publication number: 20230096872Abstract: An alkaline dry battery including: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and an alkaline electrolyte retained in the positive electrode, the negative electrode, and the separator. The negative electrode includes a negative electrode active material containing zinc, and an additive. The additive includes an aromatic carboxylic acid and tin powder.Type: ApplicationFiled: December 8, 2020Publication date: March 30, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yasuyuki Kusumoto, Yasufumi Takahashi, Takayuki Nakatsutsumi, Atsushi Fukui
-
Publication number: 20230092792Abstract: An alkaline dry battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte, and the negative electrode includes a negative electrode active material containing zinc, a compound A having a P—O bond, and terephthalic acid. The molar ratio of the compound A to the terephthalic acid is 0.025 or more and 2.5 or less.Type: ApplicationFiled: October 20, 2020Publication date: March 23, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yasufumi Takahashi, Takayuki Nakatsutsumi, Yasuyuki Kusumoto, Atsushi Fukui
-
Publication number: 20220271406Abstract: A lithium primary battery including a battery case, an electrode group housed in the battery case, and a non-aqueous electrolyte. The non-aqueous electrolyte contains a non-aqueous solvent, a solute, and an additive. The electrode group includes a positive electrode, a negative electrode, and a separator interposed therebetween. The negative electrode includes a metal lithium or lithium alloy foil, and has a shape having a longitudinal direction and a lateral direction, with a long tape attached to at least one principal surface of the negative electrode along the longitudinal direction. The tape includes a resin base material and an adhesive layer, and has a width of 0.5 mm to 3 mm. The additive includes a phosphorus compound having a POn structure having a phosphorus atom and n oxygen atoms bonded to the phosphorus atom, where n=3 or 4.Type: ApplicationFiled: November 27, 2019Publication date: August 25, 2022Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Miyuki Nakai, Takayuki Nakatsutsumi, Atsushi Fukui
-
Publication number: 20220149375Abstract: An alkaline dry battery including: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and an alkaline electrolyte retained in the positive electrode, the negative electrode, and the separator. The negative electrode includes a negative electrode active material containing zinc, and an additive. The additive includes a sulfur-containing cyclic compound.Type: ApplicationFiled: December 4, 2019Publication date: May 12, 2022Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yasufumi Takahashi, Takayuki Nakatsutsumi, Atsushi Fukui
-
Publication number: 20220115676Abstract: An alkaline dry battery, including: a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolyte. The positive electrode includes a manganese dioxide, the negative electrode includes zinc and/or a zinc alloy, and the alkaline electrolyte includes at least one sulfonyl group-containing anion selected from the group consisting of a bis(perfluoroalkylsulfonyl)imide anion, a bis(fluorosulfonyl)imide anion, and a fluorosulfonate anion.Type: ApplicationFiled: October 25, 2019Publication date: April 14, 2022Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takayuki Nakatsutsumi, Yasuyuki Kusumoto, Yasufumi Takahashi, Atsushi Fukui
-
Publication number: 20210344008Abstract: A secondary battery includes a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte. The electrolyte contains a solvent, a lithium salt dissolved in the solvent, and a film forming compound. The film forming compound includes fluorine and an unsaturated bond between carbons. A surface of the positive electrode active material is at least partially covered with a film containing lithium, oxygen, carbon, and fluorine.Type: ApplicationFiled: February 21, 2019Publication date: November 4, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takayuki Nakatsutsumi, Kazuhiro Iida, Atsushi Fukui
-
Publication number: 20210218064Abstract: A secondary battery includes a negative electrode containing a lithium silicate phase and silicon particles dispersed in the lithium silicate phase and an electrolytic solution containing a fluorine-containing linear carboxylic acid ester represented by R1—(CO)O—CH2—R2 (wherein R1 is an alkyl group and R2 is an alkyl group in which at least one hydrogen atom is substituted with fluorine).Type: ApplicationFiled: February 21, 2019Publication date: July 15, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazuhiro Iida, Takayuki Nakatsutsumi, Atsushi Fukui
-
Publication number: 20210083324Abstract: A rechargeable battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The electrolyte solution contains water and one or more lithium salts, and the lithium salts include lithium fluorophosphate.Type: ApplicationFiled: November 30, 2018Publication date: March 18, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kenji Matsubara, Nobuhiko Hojo, Hiroyuki Matsumoto, Takayuki Nakatsutsumi, Kazuhiro Iida, Atsushi Fukui
-
Publication number: 20210013488Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a lithium hexafluorophosphate and an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyO?F?. The additive is at least one selected from the group consisting of difluorophosphates, tetrafluoroborates, bis(oxalate)borate salts, bis(trifluoromethanesulfonyl)imide salts, and bis(fluorosulfonyl)imide salts.Type: ApplicationFiled: September 24, 2020Publication date: January 14, 2021Inventors: Takayuki NAKATSUTSUMI, Ryuichi NATSUI, Nobuhiko HOJO
-
Publication number: 20200411849Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyO?F?, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, ?, and ? satisfy the following requirements: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2. The additive is at least one selected from dinitrile compounds and diisocyanate compounds.Type: ApplicationFiled: September 16, 2020Publication date: December 31, 2020Inventors: Takayuki NAKATSUTSUMI, Ryuichi NATSUI, Nobuhiko HOJO