公开(公告)号：US20070122708A1

公开(公告)日：2007-05-31

申请号：US11642472

申请日：2006-12-20

申请人： Harunari Shimamura ,  Takayuki Nakamoto ,  Hideaki Ohyama ,  Yasuhiko Bito

发明人： Harunari Shimamura ,  Takayuki Nakamoto ,  Hideaki Ohyama ,  Yasuhiko Bito

IPC分类号： H01M4/58

CPC分类号： H01M4/38 ,  H01M4/0402 ,  H01M4/366 ,  H01M4/386 ,  H01M4/387 ,  H01M4/42 ,  H01M4/58 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

摘要： A negative electrode material for a non-aqueous electrolyte secondary battery of the present invention is a negative electrode material for a non-aqueous electrolyte secondary battery capable of reversibly absorbing and desorbing lithium, and it includes a solid phase A and a solid phase B that have different compositions and has a structure in which the surface around the solid phase A is entirely or partly covered by the solid phase B. The solid phase A contains at least one element selected from the group consisting of silicon, tin and zinc, and the solid phase B contains the above-described at least one element contained in the solid phase A, and at least one element selected from the group consisting of Group IIA elements, transition elements, Group IIB elements, Group IIIB elements and Group IVB elements. The atomic arrangement and structure (e.g., crystal structure or amorphous structure) of at least one solid phase selected from the group consisting of the solid phase A and the solid phase B are controlled. It is possible to provide a negative electrode material for a non-aqueous electrolyte secondary battery in which deterioration due to charge/discharge cycle characteristics is suppressed, by using such a material as a negative electrode material for a non-aqueous electrolyte secondary battery. It is also possible to provide a non-aqueous electrolyte secondary battery having excellent charge/discharge cycle characteristics, by including such a negative electrode material for a non-aqueous electrolyte secondary battery.

摘要翻译： 本发明的非水电解质二次电池用负极材料是能够可逆地吸收和解吸锂的非水电解质二次电池用负极材料，具有固相A和固相B， 具有不同的组成并且具有其中固相A周围的表面完全或部分被固相B覆盖的结构。固相A含有选自硅，锡和锌中的至少一种元素，并且 固相B包含上述固相A中所含的至少一种元素，以及选自由IIA族元素，过渡元素，IIB族元素，IIIB族元素和IVB族元素组成的组中的至少一种元素。 控制选自固相A和固相B的至少一种固相的原子排列和结构（例如，晶体结构或无定形结构）。 通过使用这种材料作为非水电解质二次电池的负极材料，可以提供通过抑制由于充放电循环特性而导致的劣化的非水电解质二次电池用负极材料。 通过包括这种非水电解质二次电池用负极材料，也可以提供充放电循环特性优异的非水电解质二次电池。

公开(公告)号：US07597997B2

公开(公告)日：2009-10-06

申请号：US10545760

申请日：2004-05-21

申请人： Toshitada Sato ,  Harunari Shimamura ,  Hideaki Ohyama ,  Yasuhiko Bito

发明人： Toshitada Sato ,  Harunari Shimamura ,  Hideaki Ohyama ,  Yasuhiko Bito

IPC分类号： H01M4/00 ,  H01M4/56 ,  H01M4/58

CPC分类号： H01M10/052 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/362 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/621 ,  Y10T29/49115

摘要： A nonaqueous electrolyte secondary battery with excellent charging/discharging cycle characteristics is provided, more specifically a nonaqueous electrolyte secondary battery in which deterioration of the conductivity of a negative electrode due to charging/discharging cycle is suppressed and a method for manufacturing the same are provided. The nonaqueous electrolyte secondary battery includes: a positive electrode and a negative electrode that are capable of reversibly absorbing and desorbing Li ions; and a nonaqueous electrolyte having lithium ion conductivity. The negative electrode includes a collector and active material particles that are disposed on a surface of the collector. The active material particles include Si and at least one element R selected from the group consisting of Sn, In, Ga, Pb and Bi. Metallic bond including the element R is formed between the active material particles.

摘要翻译： 提供了具有优异的充放电循环特性的非水电解质二次电池，更具体地说，提供了抑制由于充放电循环引起的负极导电性劣化的非水电解质二次电池及其制造方法。 非水电解质二次电池包括：能够可逆地吸收和解吸Li离子的正极和负极; 和具有锂离子传导性的非水电解质。 负极包括设置在集电体的表面上的集电体和活性物质颗粒。 活性物质颗粒包括Si和选自Sn，In，Ga，Pb和Bi中的至少一种元素R. 在活性物质粒子之间形成包含元素R的金属键。