会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明公开
    • 탄소 재료 및 그 제조 방법
    • 碳材料和碳材料生产工艺
    • KR1020090104129A
    • 2009-10-05
    • KR1020097017890
    • 2008-01-30
    • 쥬오 덴끼 고교 가부시키가이샤
    • 후지와라도오루야마모토히로시
    • C01B31/04H01M4/58
    • H01M10/4235C01B32/05C01P2004/61C01P2006/12H01M4/02H01M4/362H01M4/587H01M10/0525H01M2004/021Y02E60/12
    • This invention provides a carbon material which can suppress the decomposition of a nonaqueous electrolyte, can realize a high level of filling by virtue of its excellent compressibility, and can form a high capacitance electrode without sacrificing charge/discharge efficiency and cycling properties and is suitable for use as a negative electrode material for a lithium ion rechargeable battery. A graphite powder (A) having an average particle diameter of 10 to 30 μm and a specific surface area (S1) of not more than 12.5 m2/g and a pitch powder (B) having a softening point of 80 to 180°C and an average particle diameter of 15 to150 μm are mixed together at A/B mass ratio = 98/2 to 95.5/4.5. The mixed powder thus obtained is left to stand and, in this state, is heat treated at a temperature of 900 to 1100°C in an inert atmosphere to carbonize the pitch and thus to produce a carbon material comprising carbon deposited on the surface of the graphite powder. The carbon is preferentially deposited on the edge face of the graphite particle. The carbon material has a specific surface area (S2) of 1.0 to 5.0 m2/g and satisfies a requirement of 0.4
    • 本发明提供一种能够抑制非水电解质分解的碳材料,可以通过其优异的压缩性实现高水平的填充,并且可以形成高电容电极而不牺牲充电/放电效率和循环性能,并且适用于 用作锂离子可充电电池的负极材料。 平均粒径为10〜30μm,比表面积(S1)为12.5m 2 / g以下的石墨粉末(A)和软化点为80〜180℃的沥青粉末(B)和 平均粒径为15〜150μm,A / B质量比= 98/2〜95.5 / 4.5。 将这样得到的混合粉末静置,在该状态下,在惰性气氛中,在900〜1100℃的温度下进行热处理,对沥青进行碳化,由此生成碳材料,该碳材料包含沉积在 石墨粉。 碳优先沉积在石墨颗粒的边缘面上。 碳材料的比表面积(S2)为1.0〜5.0m 2 / g,满足0.4≤S2/S1≤0.8的要求。