发明名称 |
LITHIUM ION SECONDARY BATTERY |
摘要 |
There is provided a lithium ion secondary battery excellent in cycle characteristics in which the conductivity of an electrode using a graphite material which is less deformed and oriented by pressurization is improved. A negative electrode mixture which includes at least a negative electrode active material comprising graphite as a main component, a binder, and a conductive aid has a ratio of a peak intensity of a (002) plane to a peak intensity of a (110) plane in an X-ray diffraction spectrum of 30 or more and 70 or less, the spectrum being measured after the negative electrode mixture is pressed at 98 MPa (1000 kgf/cm 2 ), and the conductive aid includes carbon black having a DBP absorption (cm 3 /100 g) of 250 or more and 500 or less. |
申请公布号 |
EP2549569(A1) |
申请公布日期 |
2013.01.23 |
申请号 |
EP20110756430 |
申请日期 |
2011.03.18 |
申请人 |
NEC ENERGY DEVICES, LTD. |
发明人 |
SASAKI, HIDEAKI;NOGUCHI, TAKEHIRO |
分类号 |
H01M4/133;C01B31/02;C01B31/04;H01M4/04;H01M4/1393;H01M4/587;H01M4/62;H01M10/052;H01M10/0525;H01M10/0567 |
主分类号 |
H01M4/133 |
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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