发明名称 |
MODIFIED NATURAL GRAPHITE PARTICLES |
摘要 |
<p>A modified natural graphite material which provides a negative plate having improved adhesion between a negative electrode mixture and a current collector has a circularity of at least 0.92 and at most 1.0 and an incident angle dependence S 60/0 of the peak intensity ratio of at least 0.5 and at most 0.7 as determined by measurement of C K-edge X-ray absorption spectra using synchrotron radiation as an excitation source. It preferably satisfies at least one of the following conditions: an absolute specific gravity of at least 2.25 (g/cm 3 ), a tap density of at least 1.0 g/cm 3 and at most 1.4 g/cm 3 , and linseed oil absorption of at least 20 cm 3 /100 g and at most 50 cm 3 /100 g. A carbonaceous material may adhere to at least a portion of the surface of the graphite particles.</p> |
申请公布号 |
EP2695857(A1) |
申请公布日期 |
2014.02.12 |
申请号 |
EP20120768047 |
申请日期 |
2012.04.03 |
申请人 |
CHUO DENKI KOGYO CO., LTD. |
发明人 |
NISHIHARA, KATSUHIRO;YAMAMOTO, HIROSHI;NAGATA, TATSUO;NEGI, NORIYUKI;FUJIWARA ,TOORU |
分类号 |
C01B31/04;H01M4/133;H01M4/1393;H01M4/36;H01M4/587;H01M4/62;H01M4/66;H01M10/052 |
主分类号 |
C01B31/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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