-
公开(公告)号：US20210193992A1
公开(公告)日：2021-06-24
申请号：US17123963
申请日：2020-12-16
发明人： Masanori Sugimori , Yusuke Fukumoto , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
IPC分类号： H01M4/36 , H01M4/133 , H01M4/134 , H01M10/0525
摘要： A negative electrode for a nonaqueous electrolyte secondary battery, which is an example of embodiments, comprises a negative electrode core body and a negative electrode mixture layer provided on the surface of the negative electrode core body. The negative electrode mixture layer includes graphite and fibrous carbon. The BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region. In addition, the average length of the fibrous carbon included in the first region is longer than the average length of the fibrous carbon included in the second region.
-
公开(公告)号：US11728471B2
公开(公告)日：2023-08-15
申请号：US17123903
申请日：2020-12-16
发明人： Yusuke Fukumoto , Masanori Sugimori , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
摘要： A negative electrode for a nonaqueous electrolyte secondary battery, which is an example of embodiments, comprises a negative electrode core body and a negative electrode mixture layer provided on the surface of the negative electrode core body. The negative electrode mixture layer includes graphite and fibrous carbon. The BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region. In addition, the average length of the fibrous carbon included in the second region is longer than the average length of the fibrous carbon included in the first region.
-
公开(公告)号：US20210202932A1
公开(公告)日：2021-07-01
申请号：US17127098
申请日：2020-12-18
发明人： Yusuke Fukumoto , Masanori Sugimori , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
IPC分类号： H01M4/36 , H01M10/0525 , H01M4/587 , H01M4/48 , H01M4/38
摘要： A negative electrode for a nonaqueous electrolyte secondary battery comprises a negative electrode core body and a negative electrode mixture layer provided. When the range of 40% of the thickness of the negative electrode mixture layer from the surface of the negative electrode mixture layer is defined as a first region and the range of 40% of the thickness of the negative electrode mixture layer from the surface of the negative electrode core body is defined as a second region, the BET specific surface area of the graphite included in the first region is smaller than that of the graphite included in the second region. The first region includes the multiwalled fibrous carbon more than the single wall fibrous carbon in terms of mass and the second region includes the single wall fibrous carbon more than the multiwalled fibrous carbon in terms of mass.
-
公开(公告)号：US11721802B2
公开(公告)日：2023-08-08
申请号：US17127098
申请日：2020-12-18
发明人： Yusuke Fukumoto , Masanori Sugimori , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
CPC分类号： H01M4/364 , H01M4/386 , H01M4/483 , H01M4/587 , H01M10/0525 , H01M2004/021 , H01M2004/027
摘要： A negative electrode for a nonaqueous electrolyte secondary battery comprises a negative electrode core body and a negative electrode mixture layer provided. When the range of 40% of the thickness of the negative electrode mixture layer from the surface of the negative electrode mixture layer is defined as a first region and the range of 40% of the thickness of the negative electrode mixture layer from the surface of the negative electrode core body is defined as a second region, the BET specific surface area of the graphite included in the first region is smaller than that of the graphite included in the second region. The first region includes the multiwalled fibrous carbon more than the single wall fibrous carbon in terms of mass and the second region includes the single wall fibrous carbon more than the multiwalled fibrous carbon in terms of mass.
-
公开(公告)号：US11728472B2
公开(公告)日：2023-08-15
申请号：US17123963
申请日：2020-12-16
发明人： Masanori Sugimori , Yusuke Fukumoto , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
CPC分类号： H01M4/364 , H01M4/133 , H01M4/134 , H01M4/366 , H01M10/0525 , H01M2004/021 , H01M2004/027
摘要： A negative electrode for a nonaqueous electrolyte secondary battery, which is an example of embodiments, comprises a negative electrode core body and a negative electrode mixture layer provided on the surface of the negative electrode core body. The negative electrode mixture layer includes graphite and fibrous carbon. The BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region. In addition, the average length of the fibrous carbon included in the first region is longer than the average length of the fibrous carbon included in the second region.
-
公开(公告)号：US20210202933A1
公开(公告)日：2021-07-01
申请号：US17130840
申请日：2020-12-22
发明人： Masanori Sugimori , Yusuke Fukumoto , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
摘要： A negative electrode for a nonaqueous electrolyte secondary battery comprises a negative electrode core body, and a negative electrode mixture layer. When the range of 40% of the thickness of the negative electrode mixture layer from the surface of the negative electrode mixture layer on the side opposite to the negative electrode core body is defined as a first region and the range of 40% of the thickness of the negative electrode mixture layer from the interface between the negative electrode mixture layer and the negative electrode core body is defined as a second region, the BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region.
-
公开(公告)号：US20210193991A1
公开(公告)日：2021-06-24
申请号：US17123903
申请日：2020-12-16
发明人： Yusuke Fukumoto , Masanori Sugimori , Yuji Yokoyama , Nobuhiro Hirano , Yo Kato
摘要： A negative electrode for a nonaqueous electrolyte secondary battery, which is an example of embodiments, comprises a negative electrode core body and a negative electrode mixture layer provided on the surface of the negative electrode core body. The negative electrode mixture layer includes graphite and fibrous carbon. The BET specific surface area of the graphite included in the first region is smaller than the BET specific surface area of the graphite included in the second region. In addition, the average length of the fibrous carbon included in the second region is longer than the average length of the fibrous carbon included in the first region.
-
公开(公告)号：US10964970B2
公开(公告)日：2021-03-30
申请号：US15516228
申请日：2015-08-31
IPC分类号： H01M10/04 , H01M4/04 , H01M10/052
摘要： A flat-plate portion of a negative electrode composite material layer includes a first end portion at one end portion in a direction of axis of winding of a flat electrode winding assembly, a second end portion located opposite to the first end portion, and a central portion lying between the first end portion and the second end portion. The flat-plate portion of the negative electrode composite material layer is provided with a plurality of communication grooves. The communication groove includes a first terminal end portion at the first end portion, includes a second terminal end portion at the second end portion, includes in the central portion, a starting portion located closer to a bottom portion of a prismatic case relative to the first terminal end portion and the second terminal end portion, and extends from the starting portion toward the first terminal end portion and the second terminal end portion.
-
公开(公告)号：US10461310B2
公开(公告)日：2019-10-29
申请号：US15019499
申请日：2016-02-09
发明人： Hiroya Umeyama , Yusuke Fukumoto , Naoyuki Wada , Yuji Yokoyama , Tatsuya Hashimoto , Naoto Onodera
摘要： A manufacturing method for a non-aqueous electrolyte secondary battery includes: forming a powder; forming a sheet-like green compact; and forming a heat-resistant layer. The powder contains composite particles and a solvent. The composite particles contain inorganic filler particles and a binder. The green compact is formed by pressing the powder in a state in which the solvent remains. The heat-resistant layer is formed by disposing the green compact on a surface of at least any of a positive electrode mixture layer and a negative electrode mixture layer after the green compact is formed.
-
公开(公告)号：US09647261B2
公开(公告)日：2017-05-09
申请号：US14440369
申请日：2012-11-12
IPC分类号： H01M4/13 , H01M10/04 , H01M10/0587 , H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/13 , H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0431 , H01M10/0525 , H01M10/0587 , H01M2004/021 , H01M2220/20 , Y02E60/122
摘要： The present invention provides a non-aqueous electrolyte secondary battery that comprises a positive electrode sheet comprising a positive electrode active material layer, and a negative electrode sheet comprising a negative electrode active material layer. The positive electrode sheet and the negative electrode sheet are arranged such that the positive electrode active material layer and the negative electrode active material layer face each other. The negative electrode active material layer comprises a face-to-face region NF that faces the positive electrode active material layer and a non-face-to-face region NNF that does not face the positive electrode active material layer. The non-face-to-face region NNF includes a high density part NHD having a density higher than that of the region face-to-face NF.
-
-
-
-
-
-
-
-
-
搜索结果
27 条记录 (耗时 0.02 秒)
