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公开(公告)号：JPWO2012063545A1
公开(公告)日：2014-05-12
申请号：JP2012542837
申请日：2011-09-09
Applicant: Jmエナジー株式会社
CPC classification number: H01G9/048 , H01G9/0425 , H01G9/145 , H01G11/06 , H01G11/28 , H01G11/38 , H01G11/44 , Y02E60/13
Abstract: 高負荷充放電を多数回にわたって繰り返し行っても、高い容量保持率が得られ、内部抵抗の上昇が抑制されると共に、負極に対するリチウムの析出による短絡が生じることがなく、従って、長い使用寿命が得られるリチウムイオンキャパシタを提供する。正極、負極および電解液を有し、前記負極が、集電体の表面および裏面の各々に負極活物質を含有する電極層を有してなるリチウムイオンキャパシタにおいて、前記負極における前記電極層の各々は、前記集電体の表面に形成された電極層の厚みと前記集電体の裏面に形成された電極層の厚みとの平均値に対するそれぞれの厚みの偏差の比率が−10〜10%のものであることを特徴とする。
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Patent Agency Ranking
公开(公告)号：JP5178606B2
公开(公告)日：2013-04-10
申请号：JP2009084324
申请日：2009-03-31
Applicant: Jmエナジー株式会社
CPC classification number: Y02E60/12
Abstract: PROBLEM TO BE SOLVED: To provide a laminate coating electricity storage device that reliably discharges a gas produced in a coating body from a specified section and is made compact on the whole. SOLUTION: The laminate coating electricity storage device comprises: a coating body formed by joining coating films, put one over the other, at a junction part formed at an outer peripheral edge; an electricity storage device element and an electrolyte stored in an electricity storage part in the coating body; and a terminal member electrically connected to a current collector of the electricity storage device element in the coating body and projecting out from at least one side of the junction part. The coating body has a non-junction part, where a connection part of the terminal member for the current collector is arranged, formed between the one side of the junction part provided with the terminal member and the electricity storage part. In the region where the non-junction part is formed, a seal part formed by joining portions of the coating films, put one over the other, to each other and a hole part formed in the seal part and penetrating at least one coating film are formed. COPYRIGHT: (C)2011,JPO&INPIT
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公开(公告)号：JP5317688B2
公开(公告)日：2013-10-16
申请号：JP2008333567
申请日：2008-12-26
Applicant: Jmエナジー株式会社
IPC: H01G11/00 , H01G11/22 , H01G11/06 , H01G11/30 , H01G11/32 , H01G11/38 , H01G11/52 , H01G11/58 , H01G11/66 , H01G11/68 , H01G11/70 , H01G11/86 , H01M4/13 , H01M4/70 , H01M10/0525 , H01M10/0569 , H01M10/0587
CPC classification number: Y02E60/122
Abstract: PROBLEM TO BE SOLVED: To provide a wound-type accumulator capable of obtaining high productivity by the fact that an electrolyte penetrates inside a wound electrode unit in a short time to uniformly dope an electrode with lithium ions in a short time. SOLUTION: The wound-type accumulator includes: the wound electrode unit which is constituted by stacking and winding a cathode, having a positive active material capable of reversibly carrying and supporting lithium ions or anions, and an anode, having a negative active material capable reversibly carrying and supporting lithium ions, with a separator disposed therebetween, and in which an outermost peripheral portion or an innermost peripheral portion is the separator; a lithium ion supply source provided on an inner peripheral surface of the outermost peripheral portion or the innermost peripheral portion; and an electrolyte made of an aprotic organic solvent electrolytic solution of lithium salt. In the wound-type accumulator, the anode or cathode is doped with lithium ions by means of electrochemical contact of the anode or cathode with the lithium ion supply source, the percentages of the region, which are not covered with the lithium ion supply source in the inner peripheral surface of the outermost peripheral portion or innermost peripheral portion of the wound electrode unit, are 10 to 70%. COPYRIGHT: (C)2010,JPO&INPIT
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公开(公告)号：JP5317687B2
公开(公告)日：2013-10-16
申请号：JP2008333566
申请日：2008-12-26
Applicant: Jmエナジー株式会社
IPC: H01G11/22 , H01G11/06 , H01G11/30 , H01G11/66 , H01M4/13 , H01M4/70 , H01M10/0525 , H01M10/0566 , H01M10/0587
CPC classification number: Y02E60/122
Abstract: PROBLEM TO BE SOLVED: To provide a wound-type accumulator which is simplified in the layout of lithium ion supply sources and shortened in time spent on injecting a nonprotonic organic solvent electrolytic solution and on predoping, so as to allow quick completion of assembly and obtain high productivity. SOLUTION: The wound-type accumulator is provided with: a cylindrical wound electrode unit which has cathode and anode strips and is configured by winding from one end in an electrode stack body comprised of a stack of the cathode and anode with a separator disposed therebetween; and an electrolytic solution. In this wound-type accumulator, the anode and/or cathode is doped with lithium ions and/or anions by means of electrochemical contact of the anode and/or cathode with a lithium ion supply source. At the cathode, a cathode gap section is formed, and at least one lithium ion supply source is arranged at the cathode gap section or at a position opposing the cathode gap section at the anode, in a state not contacting the cathode. COPYRIGHT: (C)2010,JPO&INPIT
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公开(公告)号：JP5059890B2
公开(公告)日：2012-10-31
申请号：JP2010044852
申请日：2010-03-02
Applicant: Jmエナジー株式会社
CPC classification number: H01M2/0277 , H01M2/029 , H01M2/08 , H01M2/1241 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/625 , H01M10/0568 , H01M10/0569
Abstract: A laminate-packaged electric storage device can reliably discharge gas from a specific area without causing leakage of an electrolyte solution when gas is generated inside an outer package. The laminate-packaged electric storage device includes the outer package, an electric storage device element, and the electrolyte solution, the outer package being formed by stacking and seal-tight bonding outer package films along a bonding section that is formed in an outer edge area of each of the outer package films, and the electric storage device element and the electrolyte solution being held in a receiving section that is formed inside the outer package, a non-bonding section that is surrounded by the bonding section and communicates with the receiving section being formed in the outer edge area of each of the outer package films, an opening that is formed through at least one of the outer package films, and a seal section that is formed to surround the opening being formed in an area of the non-bonding section, the outer package films being bonded in the seal section, and the opening being formed in the area of the non-bonding section at a position other than a center position.
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