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1.发明申请公开(公告)号：US20190341202A1
公开(公告)日：2019-11-07
申请号：US16349489
申请日：2017-11-13
申请人： KURARAY CO., LTD.
摘要： A carbonaceous material for electric double-layer capacitors that is based on a plant-derived carbon precursor, in which carbonaceous material: a BET specific surface area is 1,900 to 2,500 m2/g; an average pore size is 2.2 to 2.6 nm as determined by a nitrogen adsorption method; a volume of micropores having a pore size of 2 nm or smaller is 0.84 to 1.30 cm3/g as determined by the MP method; a ratio of a volume of micropores having a pore size of 1 to 2 nm with respect to the volume of the micropores having a pore size of 2 nm or smaller is 25 to 50% as determined by the MP method; and a volume of mesopores having a pore size of 2 to 50 nm is 0.16 to 0.4 cm3/g as determined by the BJH method.
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公开(公告)号：US20210269315A1
公开(公告)日：2021-09-02
申请号：US17260601
申请日：2019-07-17
申请人： KURARAY CO., LTD.
IPC分类号： C01B32/336 , C01B32/318 , C01B32/384 , H01G11/24 , H01G11/34
摘要： A carbonaceous material may have a high capacitance per volume as well as a high durability, and/or may have a BET specific surface area is 1,500 to 1,900 m2/g, an average pore size is 1.84 to 2.05 nm at a nitrogen relative pressure P/P0 of 0.93 in a nitrogen adsorption isotherm measured at 77.4 K, a ratio of pore volume having a pore size of 3 nm or smaller, determined by the BJH method, is 65 to 90% relative to total pore volume calculated based on a nitrogen adsorption amount at a relative pressure P/P0 of 0.93 in the nitrogen adsorption isotherm, and a ratio of pore volume having a pore size of 1 to 2 nm, determined by the MP method, is 10 to 20% relative to total pore volume calculated based on the nitrogen adsorption amount at a relative pressure P/P0 of 0.93 in the nitrogen adsorption isotherm.
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公开(公告)号：US20220278327A1
公开(公告)日：2022-09-01
申请号：US17627825
申请日：2020-07-14
申请人： KURARAY CO., LTD.
摘要： An object of the present invention is to provide a carbonaceous material from which an electrochemical device having a high initial electrostatic capacitance, an excellent effect of suppressing gas generation during charging and discharging, and excellent durability can be obtained, and a method for producing the carbonaceous material, an electrode active material for an electrochemical device containing the carbonaceous material, an electrode for an electrochemical device containing the electrode active material, and an electrochemical device. The present invention relates to a carbonaceous material having a BET specific surface area of 1550 to 2500 m2/g, a value of an oxygen content/hydrogen content per specific surface area of 1.00 to 2.10 mg/m2, and an electrical conductivity of 10 to 15 S/cm determined by powder resistance measurement at a load of 12 kN.
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公开(公告)号：US20230178748A1
公开(公告)日：2023-06-08
申请号：US17912096
申请日：2021-03-12
申请人： KURARAY CO., LTD.
发明人： Kengo TACHIKAWA , Mao TAKAYAMA , Yoshihisa INUI , Hiroyuki NISHINAMI , Yumika NISHITA , Shushi NISHIMURA
IPC分类号： H01M4/62 , H01M10/0525 , C01B32/318 , C01B32/336 , C01B32/378 , H01G11/34
CPC分类号： H01M4/625 , H01M10/0525 , C01B32/318 , C01B32/336 , C01B32/378 , H01G11/34 , H01M2004/021
摘要： The present invention relates to an additive for an electrochemical element positive electrode comprising an activated carbon, wherein the activated carbon has a specific surface area in accordance with BET method of 1300-2500 m2/g, a pore volume of pores having a diameter of 2 nm or more of 0.35 cm3/g or less, a pore volume of pores having a diameter less than 2 nm of 0.5 cm3/g or more, and an ash content of 0.5% by weight or less.
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公开(公告)号：US20220002161A1
公开(公告)日：2022-01-06
申请号：US17291676
申请日：2019-11-07
申请人： KURARAY CO., LTD.
IPC分类号： C01B32/336
摘要： The present invention relates to a carbonaceous material having a BET specific surface area of 1550 to 2500 m2/g and a value of an oxygen content/hydrogen content per specific surface area of 1.00 to 2.04 mg/m2.
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公开(公告)号：US20210020385A1
公开(公告)日：2021-01-21
申请号：US16948816
申请日：2020-10-01
申请人： KURARAY CO., LTD.
摘要： A carbonaceous material for electric double-layer capacitors that is based on a plant-derived carbon precursor, in which carbonaceous material: a BET specific surface area is 1,900 to 2,500 m2/g; an average pore size is 2.2 to 2.6 nm as determined by a nitrogen adsorption method; a volume of micropores having a pore size of 2 nm or smaller is 0.84 to 1.30 cm3/g as determined by the MP method; a ratio of a volume of micropores having a pore size of 1 to 2 nm with respect to the volume of the micropores having a pore size of 2 nm or smaller is 25 to 50% as determined by the MP method; and a volume of mesopores having a pore size of 2 to 50 nm is 0.16 to 0.4 cm3/g as determined by the BJH method; and a method of producing same.
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