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公开(公告)号：US10270099B2
公开(公告)日：2019-04-23
申请号：US15555104
申请日：2016-03-04
发明人： Yuuhi Sato , Manabu Miyoshi , Tatsuya Eguchi , Atsushi Saito
IPC分类号： H01M4/38 , H01M4/58 , H01M10/052 , H01M10/0566 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/62 , H01M4/02
摘要： A positive electrode for lithium-ion secondary battery includes: a lithium metallic oxide with a lamellar rock-salt structure including nickel, cobalt, and manganese; and a phosphate/carbon composite including an olivine-type phosphate compound at least some of which is coated with carbon partially. A rate of a volume resistivity of the phosphate/carbon composite to a volume resistivity of the lithium metallic oxide is 0.034 or less. The olivine-type phosphate compound is expressed by a general formula: LiMhPO4 (where “M” is at least one element selected from the group consisting of Mn, Fe, Co, Ni, Cu, Mg, Zn, V, Ca, Sr, Ba, Ti, Al, Si, B, Te and Mo, and 0
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公开(公告)号：US09716267B2
公开(公告)日：2017-07-25
申请号：US15124766
申请日：2014-12-26
发明人： Tatsuya Eguchi , Takeshi Maki , Manabu Miyoshi , Yuuhi Sato , Jun Kaneda , Yusuke Yamamoto , Takahiro Sugioka
IPC分类号： H01M4/36 , H01M4/62 , H01M4/505 , H01M4/58 , H01M10/0525 , H01M4/525 , H01M4/13 , H01M4/139 , H01M4/04 , H01M10/052 , H01M4/02
CPC分类号： H01M4/364 , H01M4/0404 , H01M4/0433 , H01M4/13 , H01M4/139 , H01M4/366 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M4/625 , H01M10/052 , H01M10/0525 , H01M2004/028
摘要： A parameter for producing a positive electrode having excellent safety, and a positive electrode active material layer satisfying the parameter. The positive electrode active material layer includes a first positive electrode active material, a second positive electrode active material having a lower charge/discharge potential than the first positive electrode active material, and an additive. When the first positive electrode active material tap density is defined as dt1, the second positive electrode active material tap density is defined as dt2, a true density of the additive is defined as d3, a mass percentage of the first positive electrode active material is defined as Wt1, a mass percentage of the second positive electrode active material is defined as Wt2, a mass percentage of the additive is defined as Wt3, and a porosity of the positive electrode active material layer is defined as p, the positive electrode active material layer satisfies (1−p)×(Wt1/dt1)/((Wt1/dt1)+(Wt2/dt2)+(Wt3/d3))
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公开(公告)号：US11721805B2
公开(公告)日：2023-08-08
申请号：US17002304
申请日：2020-08-25
发明人： Masanori Harata , Tatsuya Eguchi , Masakazu Murase , Jun Yoshida , Kazuhiro Suzuki , Daichi Kosaka , Shinji Nakanishi
CPC分类号： H01M4/386 , C01B33/02 , C22C24/00 , H01B1/04 , H01M4/381 , H01M10/0525 , C01P2002/54 , C01P2002/72 , C01P2006/14 , C01P2006/16 , C01P2006/40 , H01M2004/027
摘要： Provided is a negative electrode active material that contains silicon clathrate II and that is suitable for a negative electrode of a lithium ion secondary battery. The negative electrode active material includes a silicon material in which silicon clathrate II represented by composition formula NaxSi136 (0≤x≤10) is contained and a volume of a pore having a diameter of not greater than 100 nm is not less than 0.025 cm3/g.
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公开(公告)号：US10559813B2
公开(公告)日：2020-02-11
申请号：US15565006
申请日：2016-04-05
发明人： Atsushi Saito , Tatsuya Eguchi , Manabu Miyoshi , Jun Kaneda , Tomokuni Abe , Hiroki Oshima
IPC分类号： H01M4/134 , H01M4/587 , H01M4/36 , H01M4/62 , H01M4/133 , H01M4/38 , H01M10/0525 , H01M10/052 , H01M4/02
摘要： The negative electrode includes a current collector, a negative electrode active material layer arranged on a surface of the current collector, and a protective layer arranged on a surface of the negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material having an aspect ratio defined as “a”/“b” to fall in a range of from two or more to eight or less when a length of the major axis is defined “a” and a length of the minor axis is defined “b.” The protective layer includes a ceramic powder.
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公开(公告)号：US09812702B2
公开(公告)日：2017-11-07
申请号：US14912971
申请日：2014-07-17
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
发明人： Yuta Ikeuchi , Toshikatsu Kojima , Tetsuo Sakai , Tatsuya Eguchi , Hitoshi Aikiyo , Akira Kojima
IPC分类号： H01M4/00 , H01M4/131 , H01M4/38 , H01M4/62 , H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/36 , H01M10/052 , H01M4/02
CPC分类号： H01M4/131 , H01M4/366 , H01M4/386 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/052 , H01M10/0525 , H01M2004/028
摘要： To provide a lithium ion secondary battery capable of suppressing thermal run-away when internal short circuiting occurs. The lithium ion secondary battery includes: a positive electrode including a current collector, a positive electrode active material layer that is formed on the current collector and that contains a lithium-containing complex oxide having a layered rock salt structure and being represented by general formula: LiaNibCocMndDeOf (0.2≦a≦1; b+c+d+e=1; 0≦e
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公开(公告)号：US20150280242A1
公开(公告)日：2015-10-01
申请号：US14440384
申请日：2013-11-05
发明人： Tatsuya Eguchi , Takeshi Maki
IPC分类号： H01M4/66 , H01M4/52 , H01M4/62 , H01M10/052 , H01M10/0568 , H01M4/505 , H01M4/525
CPC分类号： H01M4/667 , H01M4/505 , H01M4/523 , H01M4/525 , H01M4/622 , H01M4/623 , H01M4/625 , H01M10/052 , H01M10/0568 , H01M2004/028 , Y02T10/7011
摘要： Providing a nonaqueous-electrolyte secondary battery exhibiting superior rate characteristic and cyclability even under high-voltage application environments.The nonaqueous-electrolyte secondary battery includes: a positive-electrode current collector for nonaqueous-electrolyte secondary battery including: a current-collector body; and a film formed on a surface of the current-collector body, and composed of SnO2, a conductive carbon material and a binder for film; and a nonaqueous electrolyte containing LiPF6 (i.e., lithium hexafluorophosphate) as an electrolytic salt.
摘要翻译： 即使在高压施加环境下，也提供具有优异的速率特性和循环性的非水电解质二次电池。 非水电解质二次电池包括：非水电解质二次电池用正极集电体，其包括：集电体; 以及形成在集电体主体的表面上的由SnO 2，导电性碳材料和膜用粘合剂构成的膜; 和含有作为电解质盐的LiPF 6（即六氟磷酸锂）的非水电解质。
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