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    • 3. 发明专利
    • Anode material for lithium ion secondary battery, manufacturing method of the same, anode of lithium ion secondary battery, and lithium ion secondary battery
    • 锂二次电池的阳极材料,其制造方法,锂离子二次电池的阳极和锂离子二次电池
    • JP2005310760A
    • 2005-11-04
    • JP2005077578
    • 2005-03-17
    • Jfe Chemical CorpJfeケミカル株式会社
    • MADOKORO YASUSHIEGUCHI KUNIHIKONAGAYAMA KATSUHIROSUZUKI TOSHIHIDE
    • H01M4/02H01M4/36H01M4/587H01M10/05H01M4/58H01M10/40
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide an anode material and an anode having high discharge capacity, capable of obtaining excellent cycle property and initial charging and discharging efficiency in comparison with graphite as a conventional anode material when used as the anode material for a lithium ion secondary battery. SOLUTION: The anode material for a lithium ion secondary battery is a coated complex particle, composed of a complex particle having such a structure that a metal particle capable of alloying with lithium is held by a fibrous graphitic material, of which at least one part is coated by carbonaceous material. On the manufacturing method of the anode material for the lithium ion secondary battery, the complex particle is formed by mixing and stirring the metal particle capable of alloying with lithium and the fibrous graphitic material, and afterwards, the complex particle and a precursor of the carbonaceous material are mixed and a heat treatment is applied thereto. The above anode material is used for the anode, and the anode is used for the lithium ion secondary battery. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供具有高放电容量的阳极材料和阳极,当用作阳极材料作为常规阳极材料时,能够获得优异的循环性能和初始充放电效率 锂离子二次电池。 解决方案:锂离子二次电池用负极材料是由复合颗粒构成的复合颗粒,该复合颗粒具有能够与锂合金化的金属颗粒被纤维状石墨材料保持的结构,至少 一部分被碳质材料包覆。 关于锂离子二次电池用负极材料的制造方法,通过混合并搅拌能够与锂和纤维状石墨材料合金化的金属粒子形成复合粒子,之后,复合粒子和碳质的前体 将材料混合并施加热处理。 上述阳极材料用于阳极,阳极用于锂离子二次电池。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Negative electrode material for lithium ion secondary battery, lithium ion secondary battery negative electrode, and lithium ion secondary battery
    • 用于锂离子二次电池的负极电极材料,锂离子二次电池负极和锂离子二次电池
    • JP2012133981A
    • 2012-07-12
    • JP2010284449
    • 2010-12-21
    • Jfe Chemical CorpJfeケミカル株式会社
    • EGUCHI KUNIHIKOMADOKORO YASUSHIMINO YUKARINAGAYAMA KATSUHIRO
    • H01M4/587C01B31/04H01M4/133H01M4/36H01M4/62
    • H01M10/0525C01B32/20H01M4/133H01M4/366H01M4/587H01M2004/021
    • PROBLEM TO BE SOLVED: To provide a negative electrode material for lithium ion secondary battery which reaches a high density with a low pressing pressure, and has a high discharge capacity, excellent quick charging performance, quick discharging performance, and cycle characteristics, and to provide a negative electrode using the negative electrode material, and a lithium ion secondary battery.SOLUTION: The negative electrode material for lithium ion secondary battery contains (A) mesophase small spherical graphitization matter having an average particle size of 10-40 μm, and an average aspect ration of less than 1.3, and other graphites (B)-(D) smaller than (A) at a quantitative ratio specified by formulas (1)-(3). (B):spheroidized or ellipsoidal natural graphite having an average particle size of 5-35 μm, and an average aspect ration of less than 2.0, (C)scale-like graphite having an average particle size of 1-15 μm, and an average aspect ratio of 5.0 or more, and (D) graphite having an average particle size of 2-25 μm, and an average aspect ratio of less than 2.0. a:b=(10-70):(90-30)(1), (a+b):d=(70-98):(30-2)(2), (a+b+d):c=(85-100):(15-0 or more)(3). a-d are the masses of corresponding components (A)-(D).
    • 解决的问题:为了提供一种在低压力下达到高密度的锂离子二次电池用负极材料,具有高放电容量,优异的快速充电性能,快速放电性能和循环特性, 并且提供使用负极材料的负极和锂离子二次电池。 解决方案:用于锂离子二次电池的负极材料包含(A)平均粒度为10-40μm,平均长径比小于1.3的中间相小球状石墨化物质和其它石墨(B) - (D)按式(1) - (3)规定的定量比小于(A)。 (B):平均粒径为5-35μm,平均长径比小于2.0的球状或椭圆形天然石墨,(C)平均粒径为1-15μm的鳞状石墨,以及 平均长径比为5.0以上,(D)平均粒径为2〜25μm,平均长径比小于2.0的石墨。 a:b =(10-70):(90-30)(1),(a + b):d =(70-98):( 30-2)(2),(a + b + d) c =(85-100):( 15-0以上)(3)。 a-d是相应组分(A) - (D)的质量。 版权所有(C)2012,JPO&INPIT
    • 6. 发明专利
    • Negative electrode material for lithium ion secondary battery and method of manufacturing the same, negative electrode for lithium ion secondary battery, and lithium ion secondary battery
    • 用于锂离子二次电池的负极电极材料及其制造方法,用于锂离子二次电池的负极和锂离子二次电池
    • JP2011243567A
    • 2011-12-01
    • JP2011088937
    • 2011-04-13
    • Jfe Chemical CorpJfeケミカル株式会社
    • MADOKORO YASUSHIEGUCHI KUNIHIKO
    • H01M4/587C01B31/04H01M4/133H01M4/36
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a carbonaceous material with which high discharge capacity and high initial charge/discharge efficiency, and further superior rate characteristics and cycle characteristics are obtained.SOLUTION: The present invention relates to the negative electrode material for the lithium ion secondary battery which has a graphite core material 12 made of a graphite material with high crystallinity and a carbonaceous coating layer 16 with low crystallinity covering a surface of the core material, and has no pore 14 on its surface, in which the graphite core material has pores and is in a substantially spherical shape in a state of a single particle having no carbonaceous coating layer. A pore volume of pores of 0.01-100 μm measured by a mercury penetration method after the negative electrode material for the lithium ion secondary battery is pulverized is 0.05-0.4 cm/g. When dof the negative electrode material for the lithium ion secondary battery is equal to or less than 0.3360 nm, an R value (I(1360)/I(1580)) of the negative electrode material for the lithium ion secondary battery in a Raman spectrum is 0.3-1.0.
    • 要解决的问题:提供一种能够获得高放电容量和高初始充电/放电效率以及进一步优异的速率特性和循环特性的碳质材料。 解决方案:本发明涉及锂离子二次电池用负极材料,其具有由具有高结晶度的石墨材料制成的石墨芯材料12和具有低结晶度的碳质涂层16覆盖芯的表面 材料,并且在其表面上没有孔14,其中石墨芯材料具有孔并且在没有碳质涂层的单个颗粒的状态下呈大致球形。 用于锂离子二次电池的负极材料粉碎后,通过水银渗透法测量的0.01-100μm的孔的孔体积为0.05-0.4cm 3 / SP。 当锂离子二次电池用负极材料的d 002 等于或小于0.3360nm时,R值(I(1360)/ I(1580))为 用于拉曼光谱中的锂离子二次电池的负极材料为0.3〜1.0。 版权所有(C)2012,JPO&INPIT