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US07947396B2 Negative electrode for non-aqueous electrolyte secondary battery, method of manufacturing the same, and non-aqueous electrolyte secondary battery using the same 有权
非水电解质二次电池用负极及其制造方法以及使用其的非水电解质二次电池

Negative electrode for non-aqueous electrolyte secondary battery, method of manufacturing the same, and non-aqueous electrolyte secondary battery using the same
Abstract:
A negative electrode for a non-aqueous electrolyte secondary battery, which reversibly inserts/extracts lithium ions includes a current collector (11) in which a concave portion (12) and a convex portion (13) are formed at least one surface thereof; and a columnar body (15) which is formed by laminating n (n≧2) stages of columnar body portions which are obliquely erected on the convex portion (13) of the current collector (11) and in which a content ratio of elements sequentially vary in a longitudinal direction of the current collector (11), and has a configuration in which variation directions of content ratios of elements of odd-numbered stages of columnar body portions and even-numbered stages of columnar body portions are different from each other. At least three surfaces (13a, 13b, 13c) of the convex portion (13) in a section of the longitudinal direction are covered by the columnar body portions.
Abstract(Chinese):

用于可逆地插入/提取锂离子的非水电解质二次电池用负极包括在其至少一个表面上形成有凹部（12）和凸部（13）的集电体（11） 以及柱状体（15），其通过层叠n（n≥2）级的柱状体部分而形成，所述柱状体部分倾斜地竖立在集电体（11）的凸部（13）上，并且其中元素的含量比依次 在集电体（11）的长度方向上变化，并且具有柱状体部的奇数级和偶数级的柱状体部的元件的含量比的变化方向彼此不同的结构。 在纵向方向的一部分中的凸部（13）的至少三个表面（13a，13b，13c）被柱状体部分覆盖。

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