发明名称 |
CARBON MATERIAL FOR LITHIUM ION SECONDARY BATTERIES |
摘要 |
To provide a negative electrode material capable of giving a lithium ion secondary battery that is sufficiently small in the charge/discharge irreversible capacity observed at the initial cycle stage, has excellent high-temperature storage characteristics, and reduced in the gas generation at the initial cycle stage as well as during high-temperature storage. A carbon material for lithium ion secondary battery, wherein the surface functional group amount O/C value represented by the following formula 1 is from 1 to 4% and the sum (Cl/C+S 165 /C) of the surface functional group amount Cl/C value represented by the following formula 2 and the surface functional group amount S 165 /C value represented by the following formula 3 is from 0.05 to 0.5%: O / C value % = O atom concentration determined based on the peak area of the spectrum of O �¢ 1 �¢ s in X - ray photoelectron spectroscopy XPS analysis / C atom concentration determined based on the peak spectrum of C �¢ 1 �¢ s in XPS analysis × 100 Cl / C value % = Cl atom concentration determined based on the peak area of the spectrum of C �¢ 12 �¢ p in XPS analysis / C atom concentration determined based on the peak area of the spectrum of C �¢ 1 �¢ s in XPS analysis × 100 S 165 / C value % = S 165 atom concentration based on the peak area of the peak near 165 eV in the spectrum corresponding to S �¢ 2 �¢ p in XPS analysis / C atom concentration determined based on the peak of spectrum of C �¢ 1 �¢ s in XPS analysis × 100. |
申请公布号 |
EP2400586(A4) |
申请公布日期 |
2016.10.19 |
申请号 |
EP20100743841 |
申请日期 |
2010.02.19 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
YAMADA SHUNSUKE;YAMAGUCHI KEITA;NOSE TAISUKE;SATO HIDEHARU |
分类号 |
H01M4/587;C01B31/04;H01M4/133;H01M4/1393;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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