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    • 4. 发明授权
    • Lithium battery
    • 锂电池
    • US08197970B2
    • 2012-06-12
    • US12208497
    • 2008-09-11
    • Ryoko KandaNobuhiro OtaTakashi UemuraKentaro YoshidaMitsuyasu Ogawa
    • Ryoko KandaNobuhiro OtaTakashi UemuraKentaro YoshidaMitsuyasu Ogawa
    • H01M4/13H01M4/58H01M2/16H01M2/14H01M2/18H01M4/82H01M6/00
    • H01M10/0525H01M4/13H01M4/485H01M10/0562H01M10/0585Y10T29/49115
    • A lithium battery includes a substrate, a positive electrode layer, a negative electrode layer, and a sulfide solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer, the positive electrode layer, the negative electrode layer, and the sulfide solid electrolyte layer being provided on the substrate. In this lithium battery, the positive electrode layer is formed by a vapor-phase deposition method, and a buffer layer that suppresses nonuniformity of distribution of lithium ions near the interface between the positive electrode layer and the sulfide solid electrolyte layer is provided between the positive electrode layer and the sulfide solid electrolyte layer. As the buffer layer, a lithium-ion conductive oxide, in particular, LixLa(2−x)/3TiO3 (x=0.1 to 0.5), Li7+xLa3Zr2O12+(x/2) (−5≦x≦3, preferably −2≦x≦2), or LiNbO3 is preferably used.
    • 锂电池包括设置在正极层和负极层之间的基板,正极层,负极层和硫化物固体电解质层,正极层,负极层和硫化物固体电解质 层设置在基板上。 在该锂电池中,通过气相沉积法形成正极层,并且在正极层和硫化物固体电解质层之间的界面附近抑制锂离子分布的不均匀性的缓冲层设置在阳极 电极层和硫化物固体电解质层。 作为缓冲层,特别是锂离子传导性氧化物,特别是LixLa(2-x)/ 3TiO3(x = 0.1〜0.5),Li7 + xLa3Zr2O12 +(x / 2)(-5< lE; x≦̸ 3,优选-2& ; x和nlE; 2)或LiNbO 3。
    • 5. 发明申请
    • NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME
    • 非电解电解质二次电池及其制造方法
    • US20100279176A1
    • 2010-11-04
    • US12743287
    • 2009-06-29
    • Mitsuyasu OgawaNobuhiro OtaTakashi UemuraRyoko KandaKentaro Yoshida
    • Mitsuyasu OgawaNobuhiro OtaTakashi UemuraRyoko KandaKentaro Yoshida
    • H01M4/131H01M4/04
    • H01M10/0525H01M4/131H01M4/366H01M4/525H01M4/62H01M4/624H01M10/0562Y02T10/7011
    • There is provided a nonaqueous electrolyte secondary battery in which lithium ions can move smoothly between a positive electrode and a solid electrolyte layer, the nonaqueous electrolyte secondary battery having improved internal resistance.The nonaqueous electrolyte secondary battery includes a positive electrode 1, a negative electrode 2, and a solid electrolyte layer 3 arranged between the positive and negative electrodes. The positive electrode 1 includes a positive-electrode sintered body 10 formed by firing a powder containing a positive-electrode active material and includes a cover layer 11 arranged on a surface of the positive-electrode sintered body 10 adjacent to the solid electrolyte layer 3, the cover layer containing a positive-electrode active material. The cover layer 11 contains a compound having a layered rock-salt structure. Preferably, the direction of the c-axis of the crystal of the compound is not perpendicular to the surface of the positive-electrode sintered body. More preferably, a buffer layer 4 composed of LiNbO3 is arranged between the positive electrode 1 and the solid electrolyte layer 3, the buffer layer being configured to reduce interface resistance.
    • 提供一种非水电解质二次电池,其中锂离子可以在正电极和固体电解质层之间平稳移动,非水电解质二次电池具有改善的内阻。 非水电解质二次电池包括正极1,负极2和布置在正极和负极之间的固体电解质层3。 正极1包括通过焙烧包含正极活性物质的粉末而形成的正极烧结体10,并且包括布置在与固体电解质层3相邻的正极烧结体10的表面上的覆盖层11, 所述覆盖层含有正极活性物质。 覆盖层11含有具有层状岩盐结构的化合物。 优选地,化合物的晶体的c轴方向不垂直于正极烧结体的表面。 更优选地,在正极1和固体电解质层3之间配置有由LiNbO 3组成的缓冲层4,缓冲层被配置为降低界面电阻。
    • 8. 发明申请
    • LITHIUM BATTERY
    • 锂电池
    • US20090068563A1
    • 2009-03-12
    • US12208497
    • 2008-09-11
    • Ryoko KandaNobuhiro OtaTakashi UemuraKentaro YoshidaMitsuyasu Ogawa
    • Ryoko KandaNobuhiro OtaTakashi UemuraKentaro YoshidaMitsuyasu Ogawa
    • H01M6/18
    • H01M10/0525H01M4/13H01M4/485H01M10/0562H01M10/0585Y10T29/49115
    • A lithium battery includes a substrate, a positive electrode layer, a negative electrode layer, and a sulfide solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer, the positive electrode layer, the negative electrode layer, and the sulfide solid electrolyte layer being provided on the substrate. In this lithium battery, the positive electrode layer is formed by a vapor-phase deposition method, and a buffer layer that suppresses nonuniformity of distribution of lithium ions near the interface between the positive electrode layer and the sulfide solid electrolyte layer is provided between the positive electrode layer and the sulfide solid electrolyte layer. As the buffer layer, a lithium-ion conductive oxide, in particular, LixLa(2-x)/3TiO3 (x=0.1 to 0.5), Li7+xLa3Zr2O12+(x/2) (−5≦×≦3, preferably −2≦×≦2), or LiNbO3 is preferably used.
    • 锂电池包括设置在正极层和负极层之间的基板,正极层,负极层和硫化物固体电解质层,正极层,负极层和硫化物固体电解质 层设置在基板上。 在该锂电池中,通过气相沉积法形成正极层,并且在正极层和硫化物固体电解质层之间的界面附近抑制锂离子分布的不均匀性的缓冲层设置在阳极 电极层和硫化物固体电解质层。 作为缓冲层,特别是LixLa(2-x)/ 3TiO3(x = 0.1〜0.5),Li7 + xLa3Zr2O12 +(x / 2)(-5≤x≤3)的锂离子传导性氧化物 -2 <= x <= 2),或者优选使用LiNbO 3。
    • 10. 发明申请
    • BATTERY
    • 电池
    • US20100028775A1
    • 2010-02-04
    • US12444939
    • 2007-11-15
    • Katsuji EmuraTakashi UemuraHideaki AwataKentaro YoshidaMitsuyasu OgawaRikizo Ikuta
    • Katsuji EmuraTakashi UemuraHideaki AwataKentaro YoshidaMitsuyasu OgawaRikizo Ikuta
    • H01M4/02
    • H01M2/1673H01M6/40H01M10/052H01M10/0585
    • The battery of the invention has a positive-electrode layer 20, a negative-electrode layer 50, and an electrolytic layer 40 through which ionic conduction is performed between the two electrode layers. In this battery, the positive-electrode layer 20 and the negative-electrode layer 50 are laminated with each other and an insulating layer 30 is placed between the positive-electrode layer 20 and the negative-electrode layer 50. The insulating layer 30 has an area smaller than that of one of the positive-electrode layer 20 and the negative-electrode layer 50 and larger than that of the other. There is no place where the positive-electrode layer 20 and the negative-electrode layer 50 face each other through only the electrolytic layer 40. Even when the electrolytic layer 40 has a pinhole, the presence of the insulating layer 30 between the positive-electrode layer 20 and the negative-electrode layer 50 can suppress short-circuiting between the positive- and negative-electrode layers.
    • 本发明的电池具有在两个电极层之间进行离子传导的正极层20,负极层50和电解质层40。 在该电池中,正极层20和负极层50彼此层叠,并且在正极层20和负极层50之间设置绝缘层30.绝缘层30具有 面积比正极层20和负极层50的面积小。 正电极层20和负电极层50不存在仅通过电解质层40彼此面对的位置。即使当电解质层40具有针孔时,绝缘层30在正极 层20和负极层50可以抑制正极和负极层之间的短路。