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公开(公告)号：US20180287190A1
公开(公告)日：2018-10-04
申请号：US15715834
申请日：2017-09-26
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hirofumi YASUMIISHI , Ryuuta YAMAYA
IPC: H01M10/0525 , H01M4/133 , H01M4/1393
CPC classification number: H01M10/0525 , H01M4/133 , H01M4/1393
Abstract: A cathode material for a lithium-ion secondary battery which is made of agglomerated secondary particles formed by agglomeration of a plurality of primary particles of electrode active material particles made of a transition metal lithium phosphate compound having an olivine structure that is coated with a carbonaceous material, in which an arithmetic average roughness Ra of agglomerated secondary particle surfaces observed using a three-dimensional scanning electron microscope is 3 nm or more and less than 15 nm.
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2.发明申请公开(公告)号：US20180277887A1
公开(公告)日：2018-09-27
申请号：US15710175
申请日：2017-09-20
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hirofumi YASUMIISHI , Ryuuta YAMAYA
IPC: H01M10/0525 , H01M4/136
CPC classification number: H01M10/0525 , C01B25/45 , H01M4/136 , H01M4/366 , H01M4/5825 , H01M4/621 , H01M4/624 , H01M2004/021 , H01M2004/028 , Y02T10/7011
Abstract: An electrode material for a lithium-ion secondary battery includes an electrode active material made of a transition metal lithium phosphate compound having an olivine structure and a carbonaceous film coating the electrode active material, the specific surface area of the electrode active material is 10 m2/g to 25 m2/g, the average particle diameter of spherical secondary particles formed by granulating the primary particles of the electrode active material is 0.5 μm to 15 μm, and, regarding the content of spherical secondary particles having a circularity of, measured using a flow-type particle image analyzer, of 0.90 to 0.95, the proportion of the number of the spherical secondary particles in the total number of all of single particles and spherical secondary particles present during the measurement of the degree of circularity is 18% or more. In a lithium-ion secondary battery, a cathode includes a cathode mixture layer formed using the electrode material.
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公开(公告)号：US20180277845A1
公开(公告)日：2018-09-27
申请号：US15706384
申请日：2017-09-15
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Ryuuta YAMAYA , Masataka OYAMA
IPC: H01M4/58 , H01M10/0525 , H01M4/62
CPC classification number: H01M4/5805 , H01M4/136 , H01M4/366 , H01M4/5825 , H01M4/625 , H01M10/0525 , H01M2004/028
Abstract: A cathode material for a lithium-ion secondary battery of the present invention is active material particles including central particles represented by General Formula LixAyDzPO4 (0.9
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公开(公告)号：US20170279112A1
公开(公告)日：2017-09-28
申请号：US15280488
申请日：2016-09-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hirofumi YASUMIISHI , Ryuuta YAMAYA
IPC: H01M4/136 , H01M4/133 , H01M4/587 , H01M4/1393 , H01M4/36 , H01M4/58 , H01M10/0525 , H01M4/1397
CPC classification number: H01M4/136 , H01M4/0471 , H01M4/133 , H01M4/1393 , H01M4/1397 , H01M4/366 , H01M4/5825 , H01M4/587 , H01M4/625 , H01M10/0525 , H01M2220/30
Abstract: An electrode material includes inorganic particles of LiFexMn1-x-yMyPO4 and a carbonaceous film coating surfaces of the inorganic particles, and volume of micropores having micropore diameter of 2 to 10 nm is 3 to 11 cm3/g. A method for manufacturing an electrode material includes immersing the inorganic particles in an aqueous solution having pH of 7.0 to 10.0; producing a slurry including the inorganic particles, a carbonaceous film precursor, and water; producing a dried substance of the slurry by drying the slurry; and calcinating the dried substance in a non-oxidative atmosphere of 500° C. to 1,000° C., and an amount of the carbonaceous film precursor blended into 100 parts by mass of the inorganic particles when converted to a carbon element is 1.0 to 5.0 parts by mass. An electrode includes the electrode material. A lithium-ion secondary battery includes a cathode; an anode; and a non-aqueous electrolyte, the cathode being the electrode.
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公开(公告)号：US20200067082A1
公开(公告)日：2020-02-27
申请号：US16544704
申请日：2019-08-19
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Tsutomu NOZOE , Ryuuta YAMAYA
Abstract: A method of producing a positive electrode material for lithium-ion secondary batteries, which includes a pyrolyzed carbon coating, the method including a heat treatment step of thermally decomposing an organic compound using a rotary kiln to form a pyrolyzed carbon coating, wherein the organic compound is a carbon source that forms the pyrolyzed carbon coating of a positive electrode material.
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Patent Agency Ranking
公开(公告)号：US20180287152A1
公开(公告)日：2018-10-04
申请号：US15716858
申请日：2017-09-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hirofumi YASUMIISHI , Ryuuta YAMAYA
IPC: H01M4/58 , H01M10/0525 , H01M4/62
CPC classification number: H01M4/5805 , H01M4/0404 , H01M4/0435 , H01M4/136 , H01M4/1397 , H01M4/366 , H01M4/5825 , H01M4/625 , H01M4/661 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A cathode material for a lithium-ion secondary battery which is made of agglomerated secondary particles formed by agglomeration of a plurality of primary particles of electrode active material particles made of a transition metal lithium phosphate compound having an olivine structure that is coated with a carbonaceous material, in which an arithmetic average roughness Ra of agglomerated secondary particle surfaces observed using a three-dimensional scanning electron microscope is 15 nm or more and 25 nm or less.
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公开(公告)号：US20180277838A1
公开(公告)日：2018-09-27
申请号：US15716883
申请日：2017-09-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Hirofumi YASUMIISHI , Ryuuta YAMAYA
CPC classification number: H01M4/366 , H01M4/0416 , H01M4/0471 , H01M4/133 , H01M4/136 , H01M4/1397 , H01M4/5825 , H01M4/583 , H01M4/625 , H01M10/0525 , H01M2004/021
Abstract: An electrode material includes an inorganic particle and a carbonaceous film coating a surface of the inorganic particle, in which an amount of carbon is 0.8 to 2.5% by mass, and volume of micropores in a micropore diameter range of 2 to 200 nm is 3×10−2 to 3×10−1 cm3/g. A method for manufacturing an electrode material includes a step of immersing the inorganic particle in an aqueous solution, a step of producing a slurry including the inorganic particle immersed in an aqueous solution, a carbonaceous film precursor, and water, a step of producing a dried substance of the slurry, and a step of calcinating the dried substance in a non-oxidative atmosphere, in which an amount of the carbonaceous film precursor blended into the inorganic particle is 1.0 to 5.0 parts by mass. A lithium-ion secondary battery includes a cathode that is the electrode; an anode; and a non-aqueous electrolyte.
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公开(公告)号：US20180097225A1
公开(公告)日：2018-04-05
申请号：US15461146
申请日：2017-03-16
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Ryuuta YAMAYA , Susumu MURATA , Satoru OSHITARI , Hirofumi YASUMIISHI
IPC: H01M4/36 , H01M10/0525 , H01M4/66 , H01M4/58 , H01M4/62
CPC classification number: H01M4/366 , H01M4/5825 , H01M4/625 , H01M4/661 , H01M10/0525 , H01M2004/028
Abstract: A lithium-ion secondary battery including a cathode, an anode, and an electrolyte, in which the cathode includes an aluminum current collector and a cathode mixture layer formed on the aluminum current collector, and an interface resistance value between the cathode mixture layer and the aluminum current collector is 1 Ω·cm2 or less.
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公开(公告)号：US20180097222A1
公开(公告)日：2018-04-05
申请号：US15470397
申请日：2017-03-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Satoru OSHITARI , Masataka OYAMA , Naoyuki KUROSAWA , Ryuuta YAMAYA
IPC: H01M4/134 , H01M4/48 , H01M4/50 , H01M4/52 , H01M10/052
CPC classification number: H01M4/134 , H01M4/364 , H01M4/366 , H01M4/483 , H01M4/502 , H01M4/505 , H01M4/523 , H01M4/525 , H01M4/5825 , H01M10/052
Abstract: An electrode material for a lithium-ion secondary battery of the present invention is a mixture including an electrode active material A made of LiFexMn1−x−yMyPO4 (0.05≦x≦0.40, 0≦y≦0.14, 1−x−y≧0, here, M represents at least one element selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and an electrode active material B made of a lithium-containing metal oxide, in which a volume change percentage due to lithium ions absorbed into and emitted from the electrode active material A is 6.2% or more and 8.3% or less.
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10.发明申请公开(公告)号：US20190305363A1
公开(公告)日：2019-10-03
申请号：US16139679
申请日：2018-09-24
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Tsutomu NOZOE , Ryuuta YAMAYA
Abstract: An electrode material for a lithium ion secondary battery of the present invention is an electrode material for a lithium ion secondary battery, which comprises a mixture of an oxide-based electrode active material and a granulated body generated from primary particles, wherein the primary particles include an olivine-type electrode active material represented by General Formula LixAyDzPO4 and a carbonaceous film that coats a surface of the olivine-type electrode active material, and wherein an average particle diameter of the primary particles is 30 nm or more and 500 nm or less, an average particle diameter of the granulated body is 0.5 μm or more and 60 μm or less, a tensile strength α of the granulated body is 4 MPa or more, and a brittleness of the granulated body that is defined as a ratio (α/b) of the tensile strength α of the granulated body to a compression constant b of the granulated body is 0.2 or more.
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