Patents Assigned to Sumitomo Chemical Co., Ltd.
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Publication number: 20200044248Abstract: There is provided a production method of a lithium-containing composite oxide capable of improving performances of cycle characteristics, rate characteristics, and the like of a lithium ion secondary battery. A production method of a lithium-containing composite oxide is characterized in that when producing a lithium-containing composite oxide by mixing a transition metal hydroxide containing Ni and Mn essentially and a lithium source and heating the mixture, a transition metal hydroxide having a crystallite diameter of the (100) plane being 35 nm or less in a crystal structure model in the space group P-3m1 of an X-ray diffraction pattern is used.Type: ApplicationFiled: October 8, 2019Publication date: February 6, 2020Applicant: SUMITOMO CHEMICAL CO., LTD.Inventors: Masahiko TAMURA, Takeshi KAWASATO, Satoshi ASAKURA
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Patent number: 10532374Abstract: A thin film production method according to one embodiment includes: a coating film forming step of forming a coating film by discharging a coating liquid on a support from first to M-th line heads (M is 2 or larger and N or smaller) while allowing the support to pass through N line heads once; and a drying step of obtaining a thin film by drying the coating film. A thin film forming nozzle hole 28 of the m-th line head (m is 2 or larger and M or smaller) is arranged to be positioned between adjacent thin film forming nozzle holes in an (m?1)-th thin film forming nozzle hole array Qm-1. Every time the first line head discharges the coating liquid, the m-th line head applies the coating liquid onto the support at a predetermined delay time with respect to a discharge time of the first line head. The first to M-th line heads discharge the coating liquid from the film forming nozzle hole selected in accordance with a shape of a thin film formation region onto the support.Type: GrantFiled: September 6, 2016Date of Patent: January 14, 2020Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Motoo Noda, Hidekazu Shiomi, Akihide Suzuki
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Patent number: 10483536Abstract: There is provided a production method of a lithium-containing composite oxide capable of improving performances of cycle characteristics, rate characteristics, and the like of a lithium ion secondary battery. A production method of a lithium-containing composite oxide is characterized in that when producing a lithium-containing composite oxide by mixing a transition metal hydroxide containing Ni and Mn essentially and a lithium source and heating the mixture, a transition metal hydroxide having a crystallite diameter of the (100) plane being 35 nm or less in a crystal structure model in the space group P-3m1 of an X-ray diffraction pattern is used.Type: GrantFiled: August 12, 2015Date of Patent: November 19, 2019Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Masahiko Tamura, Takeshi Kawasato, Satoshi Asakura
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Publication number: 20190296350Abstract: To provide a lithium-containing composite oxide capable of obtaining a lithium ion secondary battery having a large discharge capacity wherein the deterioration of the discharge voltage due to repetition of a charge and discharge cycle is suppressed, a cathode active material, a positive electrode for a lithium ion secondary battery and a lithium ion secondary battery. A lithium-containing composite oxide, which is represented by the formula I: LiaiNibCOcMndMeO2??Formula I, wherein M is at least one member selected from the group consisting of Na, Mg, Ti, Zr, Al, W and Mo, a+b+c+d+e=2, 1.1?a/(b+c+d+e)?1.4, 0.2?b/(b+c+d+e)?0.5, 0?c/(b+c+d+e)?0.25, 0.3?d/(b+c+d+e)?0.6, and 0?e/(b+c+d+e)?0.1, and wherein the valence of Ni is from 2.15 to 2.45.Type: ApplicationFiled: June 3, 2019Publication date: September 26, 2019Applicant: SUMITOMO CHEMICAL CO., LTD.Inventors: Ryo EGUCHI, Takeshi KAWASATO
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Patent number: 10424777Abstract: To provide a cathode active material for a lithium ion secondary battery, which has high packing properties and high volume capacity density, and a method for its production.Type: GrantFiled: November 5, 2014Date of Patent: September 24, 2019Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Satoshi Takamatsu, Yukimitsu Wakasugi, Megumi Uchida
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Publication number: 20190245202Abstract: To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of elements in Groups 3 and 13 of the periodic table and lanthanoid elements, and a compound (II) containing Li and P, on the surface of a lithium-containing composite oxide comprising lithium and a transition metal element, wherein the atomic ratio of said P to said metal element (P/metal element) contained within 5 nm of the surface layer of the particles (III) is from 0.03 to 0.45.Type: ApplicationFiled: April 17, 2019Publication date: August 8, 2019Applicant: SUMITOMO CHEMICAL CO., LTDInventors: Takeshi KAWASATO, Kentaro Tsunozaki, Haisheng Zeng, Yasuyuki Takimoto, Toshio Suzuki, Tegi Ri
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Patent number: 10355276Abstract: To provide a lithium-containing composite oxide capable of obtaining a lithium ion secondary battery having a large discharge capacity wherein the deterioration of the discharge voltage due to repetition of a charge and discharge cycle is suppressed, a cathode active material, a positive electrode for a lithium ion secondary battery and a lithium ion secondary battery. A lithium-containing composite oxide, which is represented by the formula I: LiaiNibCocMndMeO2??Formula I, wherein M is at least one member selected from the group consisting of Na, Mg, Ti, Zr, Al, W and Mo, a+b+c+d+e=2, 1.1?a/(b+c+d+e)?1.4, 0.2?b/(b+c+d+e)?0.5, 0?c/(b+c+d+e)?0.25, 0.3?d/(b+c+d+e)?0.6, and 0?e/(b+c+d+e)?0.1, and wherein the valence of Ni is from 2.15 to 2.45.Type: GrantFiled: May 26, 2016Date of Patent: July 16, 2019Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Ryo Eguchi, Takeshi Kawasoto
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Patent number: 10326127Abstract: To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of elements in Groups 3 and 13 of the periodic table and lanthanoid elements, and a compound (II) containing Li and P, on the surface of a lithium-containing composite oxide comprising lithium and a transition metal element, wherein the atomic ratio of said P to said metal element (P/metal element) contained within 5 nm of the surface layer of the particles (III) is from 0.03 to 0.45.Type: GrantFiled: March 31, 2014Date of Patent: June 18, 2019Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Takeshi Kawasato, Kentaro Tsunozaki, Haisheng Zeng, Yasuyuki Takimoto, Toshio Suzuki, Tegi Ri
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Patent number: 10153489Abstract: A lithium-containing composite oxide essentially containing Li, Ni, Co and Mn, which has a crystal structure with space group R-3m, with a c-axis lattice constant being from 14.208 to 14.228 ?, and with an a-axis lattice constant and the c-axis lattice constant satisfying the relation of 3a+5.615?c?3a+5.655, and of which the integrated intensity ratio (I003/I104) of the (003) peak to the (104) peak in an XRD pattern is from 1.21 to 1.39.Type: GrantFiled: April 21, 2015Date of Patent: December 11, 2018Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Takeshi Kawasato, Masahiko Tamura, Ryo Eguchi
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Patent number: 10135064Abstract: To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of Al, Y, Ga, In, La, Pr, Nd, Gd, Dy, Er and Yb, and a compound (II) containing Li and at least one non-metal element selected from the group consisting of S and B, on the surface of a lithium-containing composite oxide, wherein the atomic ratio (the non-metal element/the metal element) contained within 5 nm of the surface layer of the particles (III) is within a specific range.Type: GrantFiled: February 5, 2014Date of Patent: November 20, 2018Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Takeshi Kawasato, Kentaro Tsunozaki, Haisheng Zeng, Yasuyuki Takimoto, Toshio Suzuki
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Patent number: 10122013Abstract: To provide a cathode active material having excellent cycle characteristics and a small decrease in the discharge voltage, and a process for its production. A process for producing a cathode active material, which comprises a step of mixing at least one sulfate (A) selected from the group consisting of a sulfate of Ni, a sulfate of Co and a sulfate of Mn with at least one carbonate (B) selected from the group consisting of sodium carbonate and potassium carbonate in an aqueous solution state to obtain a coprecipitated compound, a step of mixing the coprecipitated compound with an aqueous phosphate solution, a step of volatilizing a water content from the mixture of the coprecipitated compound and the aqueous phosphate solution to obtain a precursor compound, and a step of mixing the precursor compound with lithium carbonate and firing the mixture at from 500 to 1000° C.Type: GrantFiled: March 19, 2015Date of Patent: November 6, 2018Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Tomohiro Sakai, Kentaro Tsunozaki, Michinori Suehara
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Patent number: 10074851Abstract: Surface modified lithium-containing composite oxide particles include base material particles of lithium-containing composite oxide, zirconium hydroxide or zirconium oxide, and at least one lithium salt selected from the group consisting of Li2ZrF6, Li2TiF6, Li3PO4, Li2SO4 and Li2SO4.H2O. The zirconium hydroxide or zirconium oxide, and the at least one lithium salt are attached to a surface of the base material particle. The lithium-containing composite oxide is represented by the formula: LipNxMyOzFa. N is at least one element selected from the group consisting of Co, Mn and Ni; M is at least one element selected from the group consisting of Al, elements of group 2, and transition metal elements other than N; 0.9<p<1.1; 0.85<x<1.0; 0<y<0.15; 1.9<z<2.1; x+y=1; and 0<a<0.05.Type: GrantFiled: May 28, 2015Date of Patent: September 11, 2018Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Tomoo Kato, Remi Hiraki
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Patent number: 10062905Abstract: To provide a process for producing a cathode active material for a lithium ion secondary battery which can improve the initial charge and discharge efficiency (initial efficiency) and the cycle retention of a lithium ion secondary battery. A process for producing a cathode active material for a lithium ion secondary battery, which comprises a step (I) of bringing a lithium-containing composite oxide (I) containing Li element and a transition metal element into contact with a washing liquid and then separating it from the washing liquid to obtain a lithium-containing composite oxide (II), a step (II) of bringing the lithium-containing composite oxide (II) into contact with a composition (1) consisting of an aqueous solution containing an anion (A) preferably containing F and a composition (2) consisting of an aqueous solution containing a cation (M) preferably containing Al or Zr, and a step (III) of heating the lithium-containing composite oxide (II) after the step (II), in this order.Type: GrantFiled: December 16, 2015Date of Patent: August 28, 2018Assignee: SUMITOMO CHEMICAL CO., LTD.Inventor: Kentaro Tsunozaki
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Patent number: 10038188Abstract: To provide a cathode active material with which a lithium ion secondary battery having favorable cycle characteristics and having a high energy density even when discharged at a high voltage can be obtained; a cathode comprising the cathode active material; and a lithium ion secondary battery having the cathode. A cathode active material comprising a composite oxide (A) containing Li and at least one transition metal element selected from the group consisting of Ni, Co and Mn, and the following particles (B) and the following fluorinated carbon material (C) present on the surface of the composite oxide (A): particles (B): particles containing an oxide of at least one metal element selected from the group consisting of Ti, Sn, Si, Al, Ce, Y, Zr, Co, W, V, Nb, Ta, La and Mg; and fluorinated carbon material (C): a fluorinated carbon material in the form of particles or fibers.Type: GrantFiled: April 23, 2015Date of Patent: July 31, 2018Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Widjaja Hardiyanto, Chikaya Tamitsuji, Naoki Yoshida, Sadatatsu Ikeda
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Patent number: 9978946Abstract: A compound represented by Formula (I) or (II). wherein A is a single bond or a divalent residue of biphenyl, triphenyl, ?in each of which one or more hydrogen atoms attached in the carbon atoms may be replaced by a substituent other than hydrogen, wherein Z is any one selected from N, O, S, and SiR, Y is N—R, O, S, Si(R)2 where R is C1-20 alkyl or aryl, R1 and R2 are independently selected from hydrogen or C1-20 alkyl; X1 to X4 are independently selected from substituents other than spirobifluorenyl, A, B1 or B2 l, p and q are integers of from 0 to 4; m is an integer of from 0 to 3, wherein B1 and B2 are independently selected from hydrogen and a heterocyclic group; r is an integer of from 0 to 3; and X1 to X4, m, p, and q are as defined in Formula (I), with the proviso that B1 and B2 are not hydrogen simultaneously. The use of such compounds in OLEDs is also claimed.Type: GrantFiled: October 7, 2011Date of Patent: May 22, 2018Assignee: SUMITOMO CHEMICAL CO., LTD.Inventors: Jonathan Maunoury, Enrico Orselli, Dominique Bascour
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Publication number: 20150274890Abstract: A polymer comprising repeat units of formula (I) and repeat units of formula (II): wherein: Ar1 and Ar2 independently in each occurrence represents an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents; Ar3 represents a fused aromatic or heteroaromatic group that may be unsubstituted or substituted with one or more substituents; R is a substituent; m is 0, 1 or 2 with the proviso that Ar2 is not phenanthrene if m is 1; each R9 is independently a substituent, and the two groups R9 may be linked to form a ring; each z is independently 0, 1 or 2; and each R10 is independently a substituent. The polymer may be used in an organic light-emitting device.Type: ApplicationFiled: March 31, 2015Publication date: October 1, 2015Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Co., Ltd.Inventors: Kiran Kamtekar, Annette Steudel, Martin Humphries
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Patent number: 8981365Abstract: A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV.Type: GrantFiled: December 18, 2013Date of Patent: March 17, 2015Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Co., Ltd.Inventors: Daniel Alan Forsythe, Simon King, Matthew Roberts
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Patent number: 8878163Abstract: An organic light-emitting device comprising an anode; a hole transport layer; a light-emitting layer; and a cathode, characterized in that the hole transport layer comprises a polymer having a repeat unit comprising a 9,9 biphenyl fluorene unit wherein the 9-phenyl rings are independently and optionally substituted and the fluorene unit is optionally fused.Type: GrantFiled: November 18, 2008Date of Patent: November 4, 2014Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Co., Ltd.Inventors: Natasha M. Conway, Mary J. McKiernan, Brian Tierney
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Patent number: 8822633Abstract: Luminescent polymers having sterically twisted arylene repeat units are provided, which are particularly suited as electroluminescent polymers. Monomers necessary for the synthesis of the sterically twisted polyarylene are provided, as are electroluminescent device utilizing these polymers.Type: GrantFiled: February 22, 2006Date of Patent: September 2, 2014Assignee: Sumitomo Chemical Co., Ltd.Inventors: Matthew L. Marrocco, Virgil J. Lee, Farshad J. Motamedi
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Publication number: 20140225093Abstract: Improved electrode types and device configurations for organic electronic devices are disclosed. This improvement can be achieved by facilitating gettering or desiccating action of impurities, such as water, oxygen or residual solvents from the active layers of the device. Device structure and device layer materials can contribute to this improved gettering, which is inherently useful in printed electrode devices, but may also be useful in devices with electrodes patterned by other techniques. Improvement in impurity flow out of the active area of the device leads to improved performance and operational lifetime for as-made and encapsulated devices throughout their product lifecycle. Aspects of the present invention enables improved thin film electronic devices, such as OLEDs, organic photovoltaics (OPVs) and the like.Type: ApplicationFiled: August 27, 2012Publication date: August 14, 2014Applicant: Sumitomo Chemical Co., LtdInventor: John Devin Mackenzie