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1.发明申请公开(公告)号：US20110003208A1
公开(公告)日：2011-01-06
申请号：US12829800
申请日：2010-07-02
IPC分类号： H01M4/58
摘要： A negative electrode for a non-aqueous electrolyte secondary battery including: a current collector; and an active material layer including at least two alloy-based active materials selected from the group consisting of silicon, tin, a silicon oxide, and a tin oxide. The active material layer includes a first portion supported on a surface of the current collector, a second portion supported on a surface of the first portion, and a third portion supported on a surface of the second portion. The first portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the first portion decreases continuously or stepwise as approaching the second portion. The second portion includes silicon or tin. The third portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the third portion increases continuously or stepwise with distance from the second portion.
摘要翻译： 1.一种非水电解质二次电池用负极，其特征在于，包括：集电体; 以及包含选自硅，锡，氧化硅和氧化锡中的至少两种合金基活性物质的活性物质层。 活性物质层包括支撑在集电体的表面上的第一部分，支撑在第一部分的表面上的第二部分和支撑在第二部分的表面上的第三部分。 第一部分包括氧化硅或氧化锡，并且第一部分中氧化硅中的氧含量或氧化锡在接近第二部分时连续或逐步减小。 第二部分包括硅或锡。 第三部分包括氧化硅或氧化锡，并且第三部分中的氧化硅或氧化锡中的氧含量随着与第二部分的距离而连续或逐步增加。
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2.发明申请公开(公告)号：US20090017377A1
公开(公告)日：2009-01-15
申请号：US12167600
申请日：2008-07-03
IPC分类号： H01M4/24
CPC分类号： H01M4/70 , H01M4/02 , H01M4/134 , H01M4/661 , H01M4/78 , H01M10/052 , H01M2004/021
摘要： A current collector including a substrate, a plurality of projections, and a chipped portion is provided. The substrate is a metal sheet. The projections are formed on the surface of the substrate. The chipped portion is an aggregate of two or more, preferably 2 to 100 of minute projections. The minute projections are formed on the substrate surface, and are the protrusions having the height of below 35% of the average height of the projections. By forming an electrode active material layer on the face of the current collector where the projections are formed to make an electrode, the detachment of the electrode active material layer, and the spread of the detachment are significantly curbed. By using this electrode, a non-aqueous electrolyte secondary battery which have high battery capacity and energy density, excellent charge and discharge cycle characteristics, and which is capable of keeping a high-output stably for a long period of time can be obtained.
摘要翻译： 提供了包括基板，多个突起和切屑部的集流体。 基板是金属板。 突起形成在基板的表面上。 切屑部分是两个或更多个，优选2至100个微小突起的聚集体。 微小突起形成在基板表面上，并且是具有低于突起的平均高度的35％的高度的突起。 通过在形成有突起的集电体的表面上形成电极活性物质层以形成电极，电极活性物质层的分离和分离的扩散被明显地抑制。 通过使用该电极，可以获得具有高电池容量和能量密度，优异的充放电循环特性并且能够长时间稳定地保持高输出的非水电解质二次电池。
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