Patents by Inventor Hiroyuki Uono
Hiroyuki Uono 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: 20210066707Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.Type: ApplicationFiled: September 11, 2020Publication date: March 4, 2021Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Publication number: 20190252672Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts, and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
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Publication number: 20170040593Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts; and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.Type: ApplicationFiled: October 12, 2016Publication date: February 9, 2017Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
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Publication number: 20150243936Abstract: A lithium secondary battery comprising a battery case and an electrode group is provided. The electrode group comprises a positive electrode, a negative electrode, a microporous film separator and a nonaqueous electrolyte comprising a lithium salt. The electrode group and the nonaqueous electrolyte are held in the battery case and the electrodes each comprise a current collector and an active-material layer containing an active material capable of occluding/releasing a lithium ion. The nonaqueous electrolyte comprises a difluorophosphoric acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. The battery case comprises a casing material in which at least part of the battery inner side comprises a sheet formed from a thermoplastic resin and with which the electrode group can be enclosed by placing the electrode group in the casing material and heat sealing layers of the thermoplastic resin to each other.Type: ApplicationFiled: March 17, 2015Publication date: August 27, 2015Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
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Patent number: 9029022Abstract: A lithium secondary battery is provided. The battery comprises: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound of formula (1), a fluorosilane compound of formula (2), a compound of formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte.Type: GrantFiled: September 13, 2012Date of Patent: May 12, 2015Assignee: Mitsubishi Chemical CorporationInventors: Hidekazu Miyagi, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Patent number: 8697285Abstract: To provide a carbon material capable of suppressing excessive reactivity with an electrolytic solution and excellent in a rapid charge/discharge characteristics. A carbon material for lithium ion secondary batteries, which satisfies: (i) a tap density?0.75 g/cm3; (ii) a Raman R value?0.23 and a half width of D band ??D<45 cm?1, in which the D band appears in the vicinity of 1,358 cm?1 of the Raman spectrum; and (iii) 4 m2/g?BET specific surface area (SA)?11 m2/g.Type: GrantFiled: October 30, 2009Date of Patent: April 15, 2014Assignee: Mitsubishi Chemical CorporationInventors: Hiroyuki Uono, Hideharu Sato, Hitoshi Matsumoto, Atsuyoshi Inoue
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Patent number: 8637187Abstract: A negative-electrode material is provided that can be produced at a low cost and yields a lithium secondary battery with an excellent balance of various battery characteristics even when used in high electrode densities. It has a graphite powder with a tap density of 0.80 g/cm3 or higher and 1.35 g/cm3 or lower, an amount of surface functional groups, O/C value, of 0 or larger and 0.01 or smaller, a BET specific surface area of 2.5 m2/g or larger and 70 m2/g or smaller, a Raman R value of 0.02 or larger and 0.05 or smaller.Type: GrantFiled: June 24, 2005Date of Patent: January 28, 2014Assignee: Mitsubishi Chemical CorporationInventors: Tooru Fuse, Hiroyuki Uono, Keita Yamaguchi, Tomiyuki Kamada
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Patent number: 8431270Abstract: A subject is to provide a nonaqueous secondary battery which is sufficiently low in charge/discharge irreversible capacity in initial cycling even when an active-material layer comprising a negative-electrode material and formed on a current collector is densified for capacity increase where the subject is accomplished with composite graphite particles for a nonaqueous secondary battery which comprise a composite of spherical graphite particles and a binder graphite and which satisfy at least one of (a) to (g) conditions as presently claimed and a negative electrode produced using the carbonaceous negative-electrode material according to the invention is excellent in electrolytic-solution infiltration and provides a nonaqueous secondary battery having excellent charge/discharge high-load characteristics.Type: GrantFiled: December 25, 2007Date of Patent: April 30, 2013Assignee: Mitsubishi Chemical CorporationInventors: Hitoshi Matsumoto, Hideharu Sato, Hiroyuki Uono, Keita Yamaguchi
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Publication number: 20130022861Abstract: A lithium secondary battery is provided. The battery comprises: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound of formula (1), a fluorosilane compound of formula (2), a compound of formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte.Type: ApplicationFiled: September 13, 2012Publication date: January 24, 2013Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu Miyagi, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Publication number: 20110262802Abstract: To provide a carbon material capable of suppressing excessive reactivity with an electrolytic solution and excellent in a rapid charge/discharge characteristics. A carbon material for lithium ion secondary batteries, which satisfies: (i) a tap density?0.75 g/cm3; (ii) a Raman R value?0.23 and a half width of D band ??D<45 cm?1, in which the D band appears in the vicinity of 1,358 cm?1 of the Raman spectrum; and (iii) 4 m2/g?BET specific surface area (SA)?11 m2/g.Type: ApplicationFiled: October 30, 2009Publication date: October 27, 2011Applicant: Mitsubishi Chemical CorporationInventors: Hiroyuki Uono, Hideharu Sato, Hitoshi Matsumoto, Atsuyoshi Inoue
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Publication number: 20110059371Abstract: It is aimed at providing: a negative electrode material for a nonaqueous secondary battery, which has a higher capacity, is low in irreversible capacity upon initial charge and discharge, and has excellent cycle characteristics; and a nonaqueous secondary battery adopting the negative electrode material. The object is achieved by: a multi-layer structured carbonaceous material obtained by mixing graphitic carbon particles with an organic compound and by thermally treating the mixture, wherein loop structures are present at an edge portion of each of the graphitic carbon particles, and wherein the graphitic carbon particles have carbonized products of the organic compound affixed to surfaces of the particles, respectively, while maintaining the loop structures; and a nonaqueous secondary battery adopting the multi-layer structured carbonaceous material.Type: ApplicationFiled: February 2, 2009Publication date: March 10, 2011Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Tomiyuki Kamada, Kengo Okanishi, Keita Yamaguchi, Hideharu Satou, Hiroyuki Uono
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Publication number: 20100086856Abstract: A subject is to provide a nonaqueous secondary battery which is sufficiently low in charge/discharge irreversible capacity in initial cycling even when an active-material layer comprising a negative-electrode material and formed on a current collector is densified for capacity increase where the subject is accomplished with composite graphite particles for a nonaqueous secondary battery which comprise a composite of spherical graphite particles and a binder graphite and which satisfy at least one of (a) to (g) conditions as presently claimed and a negative electrode produced using the carbonaceous negative-electrode material according to the invention is excellent in electrolytic-solution infiltration and provides a nonaqueous secondary battery having excellent charge/discharge high-load characteristics.Type: ApplicationFiled: December 25, 2007Publication date: April 8, 2010Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hitoshi Matsumoto, Hideharu Sato, Hiroyuki Uono, Keita Yamaguchi
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Publication number: 20100015514Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.Type: ApplicationFiled: October 19, 2006Publication date: January 21, 2010Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu Miyagi, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Publication number: 20080274406Abstract: A negative-electrode material is provided that can be produced at a low cost and yields a lithium secondary battery with an excellent balance of various battery characteristics even when used in high electrode densities. It has a graphite powder with a tap density of 0.80 g/cm3 or higher and 1.35 g/cm3 or lower, an amount of surface functional groups, O/C value, of 0 or larger and 0.01 or smaller, a BET specific surface area of 2.5 m2/g or larger and 70 m2/g or smaller, a Raman R value of 0.02 or larger and 0.05 or smaller.Type: ApplicationFiled: June 24, 2005Publication date: November 6, 2008Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Tooru Fuse, Hiroyuki Uono, Keita Yamaguchi, Tomiyuki Kamada
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Publication number: 20070128518Abstract: There is provided an excellent negative-electrode material using graphite for lithium secondary battery that, when used in high electrode density, can yield an excellent lithium secondary battery which has large discharging capacity, achieves high efficiency during charging and discharging, exhibits superior load characteristics, and involves only a small amount of swelling of the electrode during charging. The material has a graphite-composite mixture powder (C) that comprises: a graphite composite powder (A) in which a graphite (D), whose aspect ratio is 1.2 or larger and 4.0 or smaller, is compounded with a graphite (E), which has orientation different from orientation of said graphite (D); and an artificial graphite powder (B).Type: ApplicationFiled: February 7, 2005Publication date: June 7, 2007Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hiroyuki Uono, Keita Yamaguchi, Tooru Fuse