发明名称 |
NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY COMPRISING THE SAME |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a negative electrode for a secondary battery offering a high discharge capacity and excellent cycle characteristics, and a secondary battery suitable for an electric vehicle and a smart grid. <P>SOLUTION: A negative electrode for a secondary battery comprises an active material layer composed of a negative electrode active material bound together with a binder. The binder is composed of a polyimide resin having a repeating unit represented by the formula (1). The negative electrode active material is composed of a carbon material made from at least one of petroleum heavy oil and coal heavy oil, the average particle size is in the range of 5 to 50 μm, the distance d<SB POS="POST">002</SB>between the crystal faces obtained by X-ray diffraction is in the range of 0.3354 to 0.3500 nm, and the BET specific surface area is equal to or smaller than 10 m<SP POS="POST">2</SP>/g. A secondary battery comprises the negative electrode for a secondary battery. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2012252841(A) |
申请公布日期 |
2012.12.20 |
申请号 |
JP20110123777 |
申请日期 |
2011.06.01 |
申请人 |
NIPPON STEEL & SUMIKIN CHEMICAL CO LTD |
发明人 |
TANAKA TOSHIMASA;KOSEKI KAZUNORI;OIKAWA SHINJI;IKEDA DAISUKE |
分类号 |
H01M4/133;H01M4/587;H01M4/62 |
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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