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发明公开
CN104718158A 碳材料、电池电极用碳材料以及电池 失效 - 权利终止

碳材料、电池电极用碳材料以及电池
摘要：
本发明涉及一种碳材料，其是含有0.001～0.5质量％的硼原子、利用X射线衍射法测得的(002)面的平均面间距(d002)为0.337nm以下的碳材料，在观察由所述碳材料构成的成型体截面的光学组织的情况下，从面积小的组织开始累计面积，将该累计面积变为总光学组织面积的60％的面积时的光学组织的面积记为SOP，从纵横尺寸比小的组织开始数组织的数目，将组织总体的数目的第60％的组织的纵横尺寸比记为AROP，将平均粒径记为D50时，具有1.5≤AROP≤6和0.2×D50≤(SOP×AROP)1/2＜2×D50的关系。另外，还涉及使用该碳材料作为电极材料的二次电池。
摘要（英）：

The present invention relates to a carbon material which contains boron atoms in an amount of 0.001-0.5 mass% and in which in analysis by X-ray diffractometry, the (002) planes have an average interplanar spacing (d002) of 0.337 nm or less. In an examination of the optical structures of a section of a molded object constituted of the carbon material, the carbon material has the relationships 1.5<=AROP<=6 and 0.2*D50<=(SOP*AROP)1/2<2*D50 where SOP is the area of an optical structure which is to be added at the time when the cumulative area calculated by cumulation from the minimum-area structure reaches 60% of the total area of all the optical structures, AROP is the aspect ratio of a structure which is placed at 60% of the number of all the structures when the structures are counted in ascending order of aspect ratio, and D50 is the average grain diameter. The invention further relates to a secondary battery wherein this carbon material is used as an electrode material.

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