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公开(公告)号:JP5293046B2
公开(公告)日:2013-09-18
申请号:JP2008244642
申请日:2008-09-24
申请人: Tdk株式会社
摘要: An electrode having a current collector with a plurality of through holes, and active material layers provided on both sides of the current collector. The current collector has projections extending on the top side or on the back side of the current collector from edges of the through holes, and an angle between each of the projections and a surface direction of the current collector is in the range of 30 to 80°.
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公开(公告)号:JP5526488B2
公开(公告)日:2014-06-18
申请号:JP2008081212
申请日:2008-03-26
申请人: Tdk株式会社
IPC分类号: H01M10/04 , H01G11/10 , H01G11/14 , H01G11/22 , H01G11/52 , H01M2/16 , H01M4/02 , H01M4/13 , H01M10/0585
CPC分类号: H01M4/13 , H01M2/162 , H01M2/1653 , H01M2/1673 , H01M2/18 , H01M4/624 , H01M10/4235 , H01M2004/024
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公开(公告)号:JP5163439B2
公开(公告)日:2013-03-13
申请号:JP2008295604
申请日:2008-11-19
申请人: Tdk株式会社
IPC分类号: C08J5/18 , H01M2/16 , H01M10/0565
CPC分类号: H01M2/162 , C08J7/047 , C08J2309/02 , C08J2327/00 , H01M2/1653 , H01M10/0565 , Y10T428/24132
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6.
公开(公告)号:JP5365106B2
公开(公告)日:2013-12-11
申请号:JP2008224899
申请日:2008-09-02
申请人: Tdk株式会社
IPC分类号: H01M4/139 , H01G11/22 , H01G11/38 , H01G11/56 , H01G11/86 , H01M4/02 , H01M4/04 , H01M4/13 , H01M4/62 , H01M10/0565
CPC分类号: H01M4/0404 , H01M4/0435 , H01M4/139 , H01M4/366 , H01M4/62 , H01M4/622
摘要: An electrode manufacturing method which can form a flat short-circuit prevention coating film (solid polyelectrolyte layer) having a uniform thickness and prevent short circuits from occurring in an electrochemical device is provided. The electrode manufacturing method comprises a first step of applying an active material layer coating material containing an active material particle, an active material layer binder, and a first solvent to a current collector so as to form a coating film made of the active material layer coating material; a second step of applying a second solvent to the coating film; and a third step of applying a solid polyelectrolyte layer coating material containing a solid polyelectrolyte, a solid polyelectrolyte layer binder, and a third solvent to the coating film coated with the second solvent. The first solvent is a good solvent for the active material layer binder, the second solvent is a poor solvent for the solid polyelectrolyte layer binder, and the third solvent is a good solvent for the solid polyelectrolyte layer binder.
摘要翻译: 提供一种电极制造方法,其可以形成具有均匀厚度并防止在电化学装置中发生短路的扁平短路防止涂膜(固体聚电解质层)。 电极制造方法包括:将第一工序,将含有活性物质粒子,活性物质层粘合剂和第一溶剂的活性物质层涂料涂布在集电体上,形成由活性物质层涂层 材料; 将第二溶剂施加到涂膜的第二步骤; 以及第三步骤,将包含固体聚电解质,固体聚电解质层粘合剂和第三溶剂的固体聚电解质层涂料涂覆到涂覆有第二溶剂的涂膜上。 第一溶剂是活性物质层粘合剂的良溶剂,第二溶剂是固体聚电解质层粘合剂的不良溶剂,第三溶剂是用于固体聚电解质层粘合剂的良溶剂。
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公开(公告)号:JP5195341B2
公开(公告)日:2013-05-08
申请号:JP2008295608
申请日:2008-11-19
申请人: Tdk株式会社
IPC分类号: H01M2/16
CPC分类号: H01M2/1653 , B32B1/00 , B32B3/02 , B32B7/02 , B32B27/08 , B32B27/281 , B32B27/306 , B32B27/308 , B32B27/32 , B32B27/34 , B32B2250/40 , B32B2270/00 , B32B2307/306 , B32B2307/718 , B32B2457/10 , H01M2/145 , H01M2/1686 , H01M4/139 , H01M10/0525
摘要: A lithium-ion secondary battery separator has a porous structure formed by laminating a second polymer layer, a first polymer layer, and a second polymer layer in sequence. The second polymer layer has a melting point lower than that of the first polymer layer. The second polymer layer has a higher molecular part formed on a side in contact with the first polymer layer and a lower molecular part formed on a side farther from the first polymer layer than is the higher molecular part. The higher and lower molecular parts have a weight-average molecular weight ratio (higher molecular part/lower molecular part) of 4 to 19 therebetween.
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8.
公开(公告)号:JP4683044B2
公开(公告)日:2011-05-11
申请号:JP2007340256
申请日:2007-12-28
申请人: Tdk株式会社
IPC分类号: H01M10/04 , H01G11/00 , H01G11/22 , H01G11/84 , H01G11/86 , H01M10/052 , H01M10/0587 , H01M10/36
CPC分类号: H01M10/0431 , H01M10/052 , H01M10/0587 , Y10T29/49112
摘要: The invention provides a wound-type electrochemical device capable of increasing the capacity. A wound-type electrochemical device comprises a wound body formed by winding a belt-like positive electrode and a belt-like negative electrode, each of the electrodes being a current collector having an active material layer formed on both sides thereof, so as to sandwich a belt-like separator therebetween, wherein both sides of an end on a center side of the wound body of the positive electrode adjoin the negative electrode via the separator, respectively, while both sides of an end on the center side of the wound body of the negative electrode adjoin the positive electrode via the separator, respectively.
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公开(公告)号:JP5239445B2
公开(公告)日:2013-07-17
申请号:JP2008081294
申请日:2008-03-26
申请人: Tdk株式会社
CPC分类号: H01M10/0525 , H01M10/058 , H01M10/4235 , H01M2200/10
摘要: An electrochemical device comprises an electrode matrix including a multilayer structure composed of a positive electrode, a negative electrode, and a first separator, and first and second dummy electrodes electrically connected to the positive and negative electrodes, respectively. The first and second dummy electrodes have respective opposing parts opposing each other through a second separator at an outer peripheral part of the electrode matrix. One or each of the first and second dummy electrodes has a resistance control layer at least on a side where the opposing parts oppose each other. The resistance control layer has such a resistance value that an estimated internal short circuit current between the first and second dummy electrodes is equivalent to 0.09 C to 1.00 C. The first and second dummy electrodes are adapted to short-circuit each other at a lower temperature than the positive and negative electrodes do.
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