发明名称 |
COMPOSITE GRAPHITE PARTICLES AND USE THEREOF |
摘要 |
Provided are Composite graphite particles comprising core material comprising graphite obtained by heat treating petroleum based coke with a grindability index of 35 to 60 at a temperature of not less than 2500° C. and not more than 3500° C. and carbonaceous layer present on the surface of the core material, wherein the composite graphite particles have an intensity ratio ID/IG of 0.1 or more in intensity (ID) of peak in the range between 1300 and 1400 cm-1 and intensity (IG) of peak in the range between 1500 and 1620 cm-1 as measured by Raman spectroscopy spectrum, the composite graphite particles have a 50% particle diameter (D50) of not less than 3 mum and not more than 30 mum in accumulated particle size distribution by volume as measured by the laser diffraction method, and the composite graphite particles have a ratio I110/I004 of 0.2 or more in an intensity of 110 diffraction peak (I110) and an intensity of 004 diffraction peak (I004) as measured by the X ray wide angle diffraction method when the composite graphite particles and a binder was molded with pressure to adjust the density of 1.35 to 1.45 g/cm3. |
申请公布号 |
US2014057166(A1) |
申请公布日期 |
2014.02.27 |
申请号 |
US201213985611 |
申请日期 |
2012.12.07 |
申请人 |
SHOWA DENKO KK;SHOWA DENKO K.K. |
发明人 |
YOKOYAMA YOSHIHITO;SOTOWA CHIAKI;TAKEUCHU MASATAKA |
分类号 |
H01M4/587;H01M4/133;H01M10/0525 |
主分类号 |
H01M4/587 |
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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