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1. 发明授权

US06787232B1 Intercalation compounds and electrodes for batteries 失效
标题翻译：插层化合物和电池用电极
公开(公告)号：US06787232B1
公开(公告)日：2004-09-07
申请号：US09686331
申请日：2000-10-11
申请人： Yet-Ming Chiang , Donald R. Sadoway , Young-Il Jang , Biyan Huang
发明人： Yet-Ming Chiang , Donald R. Sadoway , Young-Il Jang , Biyan Huang
IPC分类号： B32B5106
CPC分类号： H01M4/131 , C01G45/1228 , C01P2002/54 , C01P2002/72 , C01P2002/77 , C01P2004/04 , C01P2006/40 , H01M4/366 , H01M4/485 , H01M4/505 , H01M10/0525 , H01M2004/021 , Y10T428/2991
摘要： This invention concerns intercalation compounds and in particular lithium intercalation compounds which have improved properties for use in batteries. Compositions of the invention include particulate metal oxide material having particles of multicomponent metal oxide, each including an oxide core of at least first and second metals in a first ratio, and each including a surface coating of metal oxide or hydroxide that does not include the first and second metals in the first ratio formed by segregation of at least one of the first and second metals from the core. The core may preferably comprise LixMyNzO2 wherein M and N are metal atom or main group elements, x, y and z are numbers from about 0 to about 1 and y and z are such that a formal charge on MyNz portion of the compound is (4−x), and having a charging voltage of at least about 2.5V. The invention may also be characterized as a multicomponent oxide microstructure usable as a lithium intercalation material including a multiphase oxide core and a surface layer of one material, which is a component of the multiphase oxide core, that protects the underlying intercalation material from chemical dissolution or reaction. In a particular preferred example the multicomponent oxide may be an aluminum-doped lithium manganese oxide composition. Such aluminum-doped lithium manganese oxide compositions, having an orthorhombic structure, also form a part of the invention. In addition, the invention includes articles, particularly electrodes, for batteries formed from the compositions of the invention, and batteries including such electrodes. The invention further relates to a composite intercalation material comprising at least two compounds in which at least one compound has an orthorhombic structure LixAlyMn1−yO2, where y is nonzero, or a mixture of orthorhombic and monoclinic LixAlyMn1−yO2.
摘要翻译：本发明涉及插层化合物，特别是具有改进的用于电池的性能的锂嵌入化合物。本发明的组合物包括具有多组分金属氧化物颗粒的颗粒状金属氧化物材料，每个包含至少第一和第二金属的氧化物核心的第一比例，并且各自包括金属氧化物或氢氧化物的表面涂层，其不包括第一并且所述第一比例中的第二金属通过所述第一和第二金属中的至少一种与所述芯分离而形成。核心可以优选包含LixMyNzO 2，其中M和N是金属原子或主要元素，x，y和z是约0至约1的数，y和z使得化合物的MyNz部分上的正电荷是（4 -x），并具有至少约2.5V的充电电压。本发明还可以被表征为可用作锂嵌入材料的多组分氧化物微结构，其包括多相氧化物芯和作为多相氧化物芯的组分的一种材料的表面层，其保护潜在的插层材料免受化学溶解或反应。在特别优选的实例中，多组分氧化物可以是掺铝的锂锰氧化物组合物。具有正交结构的这种掺铝的锂锰组合物也构成本发明的一部分。此外，本发明包括用于由本发明的组合物形成的电池的制品，特别是电极，以及包括这种电极的电池。本发明还涉及包含至少两种化合物的复合插层材料，其中至少一种化合物具有正交结构LixAlyMn1-yO2，其中y不为零，或是斜方晶和单斜晶LixAlyMn1-yO2的混合物。

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