公开(公告)号：US20040191628A1

公开(公告)日：2004-09-30

申请号：US10801655

申请日：2004-03-17

申请人： SANYO ELECTRIC CO., LTD.

发明人： Takao Inoue ,  Masahisa Fujimoto ,  Masaharu Itaya

IPC分类号： H01M004/48 ,  H01M004/52 ,  H01M004/50 ,  C01G045/12 ,  C01G049/04 ,  C01G051/04 ,  C01G053/04

CPC分类号： H01M4/525 ,  C01G45/1228 ,  C01G49/009 ,  C01G51/42 ,  C01G51/66 ,  C01G53/42 ,  C01G53/66 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2006/40 ,  H01M4/0438 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525

摘要： As a positive electrode active material, a lithium transition metal complex oxide having a layered rock-salt structure containing lithium (Li) and containing magnesium atoms (Mg) substituted for part of lithium atoms (Li) is used. The lithium transition metal complex oxide is formed by chemical or electrochemical substitution of Mg atoms for part of Li atoms in LiCoO2, LiMnO2, LiFeO2, LiNiO2, or the like. A cell is prepared in which a negative electrode 2 and a positive electrode 1 including the lithium transition metal complex oxide (positive electrode active material) are disposed in a non-aqueous electrolyte 5 including a lithium salt, and part of Li in the lithium transition metal complex oxide is extracted by discharging the cell. Then, the electrolyte including Li is replaced with an electrolyte including Mg; and the cell is discharged, so that Mg atoms are substituted for the part of Li atoms in the lithium transition metal complex oxide.

摘要翻译： 作为正极活性物质，使用具有锂（Li）层状岩盐结构并含有镁原子（Mg）取代部分锂原子（Li）的锂过渡金属络合物氧化物。 锂过渡金属复合氧化物通过Mg原子在LiCoO 2，LiMnO 2，LiFeO 2，LiNiO 2等中的部分Li原子的化学或电化学取代而形成。 制备电池，其中将包含锂过渡金属络合物（正极活性物质）的负极2和正极1设置在包含锂盐的非水电解质5中，并且在锂转变中的一部分Li 通过排出电池提取金属复合氧化物。 然后，将包含Li的电解质替换为包含Mg的电解质; 并且电池被放电，使得Mg原子代替锂过渡金属复合氧化物中的部分Li原子。

公开(公告)号：US20040191629A1

公开(公告)日：2004-09-30

申请号：US10807148

申请日：2004-03-24

申请人： SANYO ELECTRIC CO., LTD.

发明人： Masaharu Itaya ,  Masahide Miyake ,  Masahisa Fujimoto

IPC分类号： H01M004/58 ,  H01M010/40

CPC分类号： H01M4/5815 ,  H01M4/0402 ,  H01M4/386 ,  H01M4/405 ,  H01M4/581 ,  H01M10/052 ,  H01M2300/0022

摘要： A non-aqueous electrolyte secondary battery comprises a positive electrode including elemental sulfur, a negative electrode including silicon that stores lithium, and a non-aqueous electrolyte including a room temperature molten salt having a melting point of not higher than 60null C. The non-aqueous electrolyte may further include at least one type of solvent selected from cyclic ether, chain ether, and fluorinated carbonate. The non-aqueous electrolyte may include a reduction product of elemental sulfur. The positive electrode has a positive electrode active material made of a mixture of elemental sulfur, a conductive agent, and a binder. The electrode having a positive electrode active material is processed under reduced-pressure while immersed in the non-aqueous electrolyte. A pressure during the reduced-pressure process is preferably not higher than 28000 Pa (null55 cmHg with respect to atmospheric pressure).

摘要翻译： 非水电解质二次电池包括含有元素硫的正极，包含存储锂的硅的负极和包含熔点不高于60℃的室温熔融盐的非水电解质。 水电解质可以进一步包括至少一种选自环醚，链醚和氟化碳酸酯的溶剂。 非水电解质可以包括元素硫的还原产物。 正极具有由元素硫，导电剂和粘合剂的混合物构成的正极活性物质。 具有正极活性物质的电极在浸渍在非水电解质中的同时进行减压处理。 减压过程中的压力优选不高于28000Pa（相对于大气压为-55cmHg）。