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公开(公告)号：WO2022196815A1
公开(公告)日：2022-09-22
申请号：PCT/JP2022/012820
申请日：2022-03-18
发明人： SABI Yuichi , YOSHIKAWA Hikaru
摘要： A positive electrode (1) for a non-aqueous electrolyte secondary battery, including a current collector (11) and an active material layer (12) provided on the current collector (11), wherein: the active material layer (12) includes one or more positive electrode active material particles; and a true density D of the active material and a true density D1 of the active material layer (12) satisfy 0.96D ≦ D1
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公开(公告)号：WO2022196829A2
公开(公告)日：2022-09-22
申请号：PCT/JP2022/012903
申请日：2022-03-18
发明人： YOSHIKAWA Hikaru , SABI Yuichi
IPC分类号： H01M4/131 , H01M4/58 , H01M4/62 , H01M50/103 , H01M50/209 , C01B25/45 , H01M10/052 , H01M4/02
摘要： A positive electrode (1) for non-aqueous electrolyte secondary batteries, including a collector (11) and an active material layer (12), wherein a spreading resistance distribution of the layer (12) shows a profile with a sum of frequencies of resistance values 4.0 to 6.0 (logΩ) accounting for 0.0 to 5.0 % relative to a total, 100 %, of frequencies of resistance values 4.0 to 12.5 (logΩ). A positive electrode (1) for non-aqueous electrolyte secondary batteries, including a collector (11) and an active material layer (12), wherein the layer (12) includes an active material and a conductive carbon material, and an amount of a low-resistance conductive carbon material having a resistivity of 0.10 Ω・cm or less is 0.5 % by mass or less, based on a total mass of the layer (12). A positive electrode (1) for non-aqueous electrolyte secondary batteries, including a collector (11) and an active material layer (12), wherein the active material has a coated section including a conductive material, and the layer (12) has a powder resistivity of 10 to 1,000 Ω・cm.
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公开(公告)号：WO2022196814A1
公开(公告)日：2022-09-22
申请号：PCT/JP2022/012815
申请日：2022-03-18
发明人： YOSHIKAWA Hikaru , SABI Yuichi
摘要： The present relates to a positive electrode (1) for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector (11) comprising a positive electrode current collector main body (14) formed of a metal material; a positive electrode active material layer (12) provided on the positive electrode current collector (11), wherein the positive electrode active material layer (12) comprises a positive electrode active material having, on at least a part of its surface, a coated section comprising a conductive material, the positive electrode active material layer (12) has a pore specific surface area of 5.0 to 10.0 m2/g and a central pore diameter of 0.06 to 0.15 μm, and a positive electrode (1) for a non-aqueous electrolyte secondary battery, comprising a positive electrode current collector (11) and a positive electrode active material layer (12) provided on the positive electrode current collector (11), wherein a thickness of the positive electrode active material layer (12) is 10 μm or more, the positive electrode active material layer (12) comprises a positive electrode active material, and a reflectance of a surface of the positive electrode active material layer (12) is 5.5 % or higher in a wavelength range of 200 nm to 850 nm, and is not higher than a reflectance in the wavelength range of 200 nm to 850 nm peculiar to the positive electrode active material contained in the positive electrode active material layer (12).
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公开(公告)号：WO2022196831A1
公开(公告)日：2022-09-22
申请号：PCT/JP2022/012907
申请日：2022-03-18
发明人： YOSHIKAWA Hikaru , SABI Yuichi
摘要： The present invention relates to a positive electrode (1) for a non-aqueous electrolyte secondary battery, comprising a current collector (11) and an active material layer (12) which comprises active material particles, and is provided on the current collector (11), wherein a dibutyl phthalate oil absorption amount of the active material layer is 30.0 mL/100 g or more and less than 38.0 mL/100 g, and a positive electrode (1) for a non-aqueous electrolyte secondary battery, comprising: a current collector (11) comprising a current collector main body (12) formed of a metal material; and an active material layer (12) provided on the current collector, wherein: the active material layer (12) comprises an active material; the active material comprises a compound having an olivine type crystal structure; a volume density of the active material layer (12) is 2.2 to 2.7 g/cm3; and the positive electrode suffers no damage when bent once in accordance with a 90° folding endurance test method specified in JIS P 8115 (2001).
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公开(公告)号：WO2022196830A1
公开(公告)日：2022-09-22
申请号：PCT/JP2022/012904
申请日：2022-03-18
发明人： YOSHIKAWA Hikaru , SABI Yuichi
摘要： A positive electrode (1) for non-aqueous electrolyte secondary batteries, including collector (11) and active material layer (12), wherein: integrated value (a) is 3 to 15% (for frequency of diameters of 1 μm or less), and frequency (b) is 8 to 20% (for diameter with a maximum frequency). A positive electrode (1) for non-aqueous electrolyte secondary batteries, including collector (11) and active material layer (12), wherein assuming two directions perpendicular to thickness direction of collector (11) and mutually orthogonal as first and second directions, average thickness a1, maximum thickness b1, minimum thickness c1 in thickness distribution in the first direction, and thickness d1 (largest absolute value of difference from a1) satisfy 0.990≦(d1/a1)≦1.010 and (b1-c1)≦5.0μm, and average thickness a2, maximum thickness b2, minimum thickness c2 in thickness distribution in the second direction, and thickness d2 (largest absolute value of difference from a2) satisfy 0.990≦(d2/a2)≦1.010 and (b2-c2)≦5.0μm.
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