公开(公告)号：US09379382B2

公开(公告)日：2016-06-28

申请号：US14133678

申请日：2013-12-19

申请人： Jianhong Liu ,  Hongzhen Zhang ,  Qianling Zhang ,  Dayong Gui ,  Chuanxin He ,  Caizhen Zhu

发明人： Jianhong Liu ,  Hongzhen Zhang ,  Qianling Zhang ,  Dayong Gui ,  Chuanxin He ,  Caizhen Zhu

IPC分类号： H01B1/04 ,  H01M4/04 ,  C01B31/02 ,  H01M4/505 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/62 ,  H01M10/052

CPC分类号： H01M4/505 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/625 ,  H01M10/052 ,  Y02E60/122

摘要： A method for modifying a positive electrode material for a lithium-ion battery. The method includes: a) grinding a mixture of manganese dioxide and lithium carbonate, and calcining the mixture at no less than a temperature of 600° C. for no less than 20 hrs in the presence of air, to yield a powdery lithium manganese oxide (LiMn2O4); b) adding a precursor for forming a graphene-like structure to the powdery LiMn2O4, mixing, curing at a constant temperature of no less than 180° C. for between 2 and 4 hrs, grinding, and calcining at no less than a temperature of 500° C. for between 1 and 50 hrs in the presence of an inert gas, to yield a composite powder comprising a graphene-like structure and LiMn2O4; and c) collecting and sintering the composite powder at a temperature of between 300 and 500° C. for between 1 and 10 hrs in the presence of air.

摘要翻译： 一种修改锂离子电池用正极材料的方法。 该方法包括：a）研磨二氧化锰和碳酸锂的混合物，并在600℃以下的温度下在空气存在下煅烧不少于20小时，得到粉末状的锂锰氧化物 （LiMn2O4）; b）向粉末状LiMn 2 O 4中添加用于形成石墨烯结构的前体，在不低于180℃的恒定温度下混合固化2至4小时，研磨并在不低于 500℃，在惰性气体存在下1至50小时，得到包含石墨烯结构和LiMn 2 O 4的复合粉末; 和c）在空气存在下，在300-500℃的温度下收集和烧结复合粉末1至10小时。

公开(公告)号：US20140103264A1

公开(公告)日：2014-04-17

申请号：US14133678

申请日：2013-12-19

申请人： Jianhong LIU ,  Hongzhen ZHANG ,  Qianling ZHANG ,  Dayong GUI ,  Chuanxin HE ,  Caizhen ZHU

发明人： Jianhong LIU ,  Hongzhen ZHANG ,  Qianling ZHANG ,  Dayong GUI ,  Chuanxin HE ,  Caizhen ZHU

IPC分类号： H01M4/505 ,  H01M4/62

CPC分类号： H01M4/505 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/625 ,  H01M10/052 ,  Y02E60/122

摘要： A method for modifying a positive electrode material for a lithium-ion battery. The method includes: a) grinding a mixture of manganese dioxide and lithium carbonate, and calcining the mixture at no less than a temperature of 600° C. for no less than 20 hrs in the presence of air, to yield a powdery lithium manganese oxide (LiMn2O4); b) adding a precursor for forming a graphene-like structure to the powdery LiMn2O4, mixing, curing at a constant temperature of no less than 180° C. for between 2 and 4 hrs, grinding, and calcining at no less than a temperature of 500° C. for between 1 and 50 hrs in the presence of an inert gas, to yield a composite powder comprising a graphene-like structure and LiMn2O4; and c) collecting and sintering the composite powder at a temperature of between 300 and 500° C. for between 1 and 10 hrs in the presence of air.

摘要翻译： 一种修改锂离子电池用正极材料的方法。 该方法包括：a）研磨二氧化锰和碳酸锂的混合物，并在600℃以下的温度下在空气存在下煅烧不少于20小时，得到粉末状的锂锰氧化物 （LiMn2O4）; b）向粉末状LiMn 2 O 4中添加用于形成石墨烯结构的前体，在不低于180℃的恒定温度下混合固化2至4小时，研磨并在不低于 500℃，在惰性气体存在下1至50小时，得到包含石墨烯结构和LiMn 2 O 4的复合粉末; 和c）在空气存在下，在300-500℃的温度下收集和烧结复合粉末1至10小时。