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    • 9. 发明授权
    • Lithium-ion secondary battery and method of charging lithium-ion secondary battery
    • 锂离子二次电池及锂离子二次电池充电方法
    • US08785047B2
    • 2014-07-22
    • US11066247
    • 2005-02-25
    • Kazuya OgawaTsuyoshi IijimaSatoshi Maruyama
    • Kazuya OgawaTsuyoshi IijimaSatoshi Maruyama
    • H01M4/133H01M4/587
    • H01M4/587H01M2/0275H01M2/0295H01M4/02H01M6/42H01M10/0436H01M10/0525H01M10/0585H01M2004/021H01M2300/004
    • A lithium-ion secondary battery device comprises a positive electrode collector having a surface formed with a positive electrode active material layer containing a positive electrode active material; a negative electrode collector having a surface formed with a negative electrode active material layer containing a negative electrode active material; an electrically insulating porous separator; and an electrolyte containing a lithium salt and being in contact with the positive electrode active material layer, negative electrode active material layer, and separator. The negative electrode active material is a carbon material having a graphite structure. The amount of the carbon material supported by the negative electrode active material layer is 2.0 to 4.0 mg/cm2. The graphite structure in an X-ray diffraction pattern of the carbon material exhibits a peak intensity P101 of (101) plane and a peak intensity P100 of (100) plane having a ratio (P101/P100) of 2.0 to 2.8 therebetween.
    • 锂离子二次电池装置包括正极集电体,其具有由含有正极活性物质的正极活性物质层形成的表面; 具有由含有负极活性物质的负极活性物质层形成的表面的负极集电体; 电绝缘多孔分离器; 以及包含锂盐并与正极活性物质层,负极活性物质层和隔膜接触的电解质。 负极活性物质是具有石墨结构的碳材料。 由负极活性物质层支撑的碳材料的量为2.0〜4.0mg / cm 2。 碳材料的X射线衍射图中的石墨结构表现出(101)面的峰强度P101和(100)面的峰值强度P100(P101 / P100)为2.0〜2.8。
    • 10. 发明授权
    • Lithium secondary battery
    • 锂二次电池
    • US07651815B2
    • 2010-01-26
    • US10247511
    • 2002-09-20
    • Atsushi SanoTsuyoshi IijimaSatoshi MaruyamaKazuya Ogawa
    • Atsushi SanoTsuyoshi IijimaSatoshi MaruyamaKazuya Ogawa
    • H01M4/60H01M6/16
    • H01M4/624H01M4/131H01M4/133H01M10/0525H01M10/0567H01M10/0569H01M2004/021
    • A lithium secondary battery comprising positive and negative electrodes both capable of occluding and releasing lithium ions, and a lithium ion conductive material which contains a compound of formula (1) exhibits improved characteristics including charge/discharge efficiency, low-temperature properties and cycle performance when (a) only one substituent group of R1, R2, R3 and R4 in formula (1) is alkyl, (b) the negative electrode-constituting material partially contains a carboxyl or hydroxyl group-bearing compound, and the lithium ion conductive material contains propylene carbonate, or (c) a positive electrode active material is a lithium-containing transition metal compound, a negative electrode active material is a carbonaceous material, and the lithium ion conductive material contains as a non-aqueous electrolysis solution a solvent mixture of propylene carbonate and ethylene carbonate in combination with a chain-like carbonate as a low-viscosity solvent
    • 包含能够吸留和释放锂离子的正极和负极的锂二次电池和含有式(1)化合物的锂离子传导性材料具有包括充放电效率,低温性能和循环性能在内的改善的特性, (a)式(1)中R1,R2,R3和R4只有一个取代基是烷基,(b)负极构成材料部分含羧基或含羟基化合物,锂离子导电材料含 碳酸丙烯酯,或(c)正极活性物质为含锂过渡金属化合物,负极活性物质为碳质材料,锂离子传导性材料含有作为非水电解液的丙烯的溶剂混合物 碳酸酯和碳酸亚乙酯与作为低粘度溶剂的链状碳酸酯组合