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    • 2. 发明授权
    • Composite sheet electrode
    • 复合片电极
    • US5489492A
    • 1996-02-06
    • US285121
    • 1994-08-01
    • Keiichi AsamiHideki TakahashiKatsuo InoueYoshiaki EchigoToshiyuki OhsawaToshiyuki KabataOkitoshi Kimura
    • Keiichi AsamiHideki TakahashiKatsuo InoueYoshiaki EchigoToshiyuki OhsawaToshiyuki KabataOkitoshi Kimura
    • H01M4/13H01M4/60H01M4/62H01M4/66H01M4/02
    • H01M4/60H01M4/02H01M4/62H01M4/66H01M4/668
    • The present invention provides a composite sheet electrode which has high strength, excellent current collecting properties and which is used efficiently as an active material for an electrode. The electrode has excellent discharge capacities and can be easily formed into an electrode terminal. A cell employing this electrode is also disclosed. The invention also provides a composite sheet electrode having a porosity of 20 to 80% containing 5 to 95% by weight of an active material of an electrode, 1 to 50% by weight of a current collecting material and heat fusible short fibers. The present invention also provides a composite sheet electrode having a porosity of 20 to 80%, which is made up of a composite sheet containing 5 to 95% by weight of an active material as an electrode and 5 to 95% by weight of heat fusible short fibers, as well as a current collecting material layer formed on said composite sheet. The present invention further provides a cell employing the latter-mentioned composite sheet electrode.
    • 本发明提供一种复合片状电极,它具有高强度,优异的集电性能,并被有效地用作电极的活性材料。 电极具有优异的放电容量,并且可以容易地形成电极端子。 还公开了采用该电极的电池。 本发明还提供一种孔隙率为20〜80%的复合片状电极,含有5〜95重量%的电极活性物质,1〜50重量%的电流收集材料和热熔短纤维。 本发明还提供一种孔隙率为20〜80%的复合片状电极,其由含有5〜95重量%的作为电极的活性物质和5〜95重量%的热熔体的复合片材构成 短纤维,以及形成在所述复合片材上的集电材料层。 本发明还提供一种使用后者的复合片电极的电池。
    • 9. 发明授权
    • PTC element and process for producing the same
    • PTC元件及其制造方法
    • US5817423A
    • 1998-10-06
    • US607636
    • 1996-02-27
    • Hiroshi KajimaruKeiichi AsamiYoshiaki IwayaYoshiaki EchigoAkira Ito
    • Hiroshi KajimaruKeiichi AsamiYoshiaki IwayaYoshiaki EchigoAkira Ito
    • H01C7/02H01C17/065B32B15/08B29C65/00B30B11/00H01C7/00
    • H01C7/027H01C17/06573Y10T428/31678Y10T428/31692Y10T428/31855
    • A PTC element comprising a conductive sheet of a crystalline polyolefin matrix and a conductive filler, having provided on both sides thereof an electrode of a metallic foil, the PTC element having a resistivity at 20.degree. C. (.rho..sub.20) of not more than 1.8 .OMEGA..multidot.cm, a peak resistivity (.rho..sub.p) of not less than 2.0.times.10.sup.6 .OMEGA..multidot.cm, and a temperature difference �T.sub.a (0.degree.C.)-T.sub.b (.degree.C.)! of not greater than 10.degree. C., wherein T.sub.a (.degree.C.) is a temperature at which the resistivity is 10.sup.6 times the resistivity at 20.degree. C. (.rho..sub.20) and T.sub.b (.degree.C.) is a temperature at which the resistivity is 10 times the resistivity at 20.degree. C. (.rho..sub.20). The PTC element is produced by a process comprising mixing a crystalline polyolefin and a conductive filler, molding the mixture into a conductive sheet, press bonding under heat a metallic foil to both sides of the conductive sheet, and repeatedly subjecting the conductive sheet to a heating and cooling cycle consisting of heating at a temperature of not lower than (the melting point of the crystalline polyolefin minus 5.degree. C.) and then cooling to a temperature lower than (the melting point of the crystalline polyolefin minus 5.degree. C.). The PTC elements exhibit an extremely low resistivity at 20.degree. C. and a high resistivity at a peak temperature, showing a very steep increase in resistance in a narrow temperature range.
    • 一种PTC元件,包括结晶聚烯烃基质和导电填料的导电片,其两侧均设有金属箔的电极,PTC元件的电阻率在20℃(rho 20)不大于1.8 OMEGA xcm,峰值电阻率(rho p)不小于2.0×10 6欧姆×xcm,温度差[Ta(0℃)-Tb(℃)]为10℃以下,其中Ta (℃)是电阻率为20℃时电阻率的106倍的温度(rho 20),Tb(℃)是电阻率为20℃电阻率10倍的温度。 (rho 20)。 PTC元件通过包括混合结晶聚烯烃和导电填料的方法制备,将该混合物成型为导电片,在导热片的两侧将金属箔加热压接,并重复地对导电片进行加热 和冷却循环由不低于(结晶聚烯烃的熔点减去5℃)的温度加热,然后冷却到低于(结晶聚烯烃的熔点减去5℃)的温度。 PTC元件在20℃下表现出非常低的电阻率,在峰值温度下表现出高电阻率,表现出在窄温度范围内电阻非常陡峭的增加。