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公开(公告)号：US10886531B2
公开(公告)日：2021-01-05
申请号：US15526707
申请日：2015-11-12
发明人： Koji Nitta , Shoichiro Sakai , Atsushi Fukunaga , Eiko Imazaki , Koma Numata , Hideaki Ito , Hitoshi Kobayashi , Toshiaki Yamashita , Shinichi Maruyama
IPC分类号： H01M4/00 , H01M4/38 , H01G11/62 , H01G11/30 , H01G11/86 , H01M10/054 , H01G11/04 , H01M4/04 , H01M4/36 , H01M4/134 , H01M10/0566 , H01M4/1395 , H01M10/0564
摘要： Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.
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公开(公告)号：US20140230688A1
公开(公告)日：2014-08-21
申请号：US14347213
申请日：2012-09-27
IPC分类号： H01M4/1395 , H01M4/04
CPC分类号： H01M4/0404 , C23C2/02 , C23C2/04 , C23C14/16 , C23C24/106 , C23C26/00 , H01M4/0423 , H01M4/043 , H01M4/0435 , H01M4/0471 , H01M4/134 , H01M4/1395 , Y02P70/54
摘要： A current collector is covered with sodium metal through: (1) applying a sodium dispersion containing sodium metal and at least one substance selected from the group consisting of an imide salt and a binder, on a current collector in an inert gas environment (with an oxygen concentration of not more than 0.01% and a dew point of not more than −10° C.), followed by heating and drying; (2) pressure bonding a piece of solid sodium metal having a surface which exhibits a metallic luster onto a current collector in the aforementioned inert gas environment; (3) vapor-depositing sodium metal on a current collector in a reduced pressure environment; or (4) immersing a current collector having a surface fired at a temperature ranging from 150 to 300° C. in molten sodium metal after removing a coating film which is generated on a surface and formed from impurities, in the aforementioned inert gas environment.
摘要翻译： 集电器用金属钠覆盖，通过以下方式覆盖：（1）在惰性气体环境中（含有砷化氢和粘合剂）的集电器上施加包含钠金属和至少一种选自酰亚胺盐和粘合剂的物质的钠分散体 氧浓度不大于0.01％，露点不大于-10℃），然后加热干燥; （2）在上述惰性气体环境中将具有表现出金属光泽的表面的一片固体钠金属压接在集电体上; （3）在减压环境下在集电体上沉积钠金属; 或者（4）在上述惰性气体环境中除去在表面产生并由杂质形成的涂膜的表面，在熔融的钠金属中浸渍表面烧制温度为150〜300℃的集电体。
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公开(公告)号：US09647258B2
公开(公告)日：2017-05-09
申请号：US14347213
申请日：2012-09-27
CPC分类号： H01M4/0404 , C23C2/02 , C23C2/04 , C23C14/16 , C23C24/106 , C23C26/00 , H01M4/0423 , H01M4/043 , H01M4/0435 , H01M4/0471 , H01M4/134 , H01M4/1395 , Y02P70/54
摘要： A current collector is covered with sodium metal through: (1) applying a sodium dispersion containing sodium metal and at least one substance selected from the group consisting of an imide salt and a binder, on a current collector in an inert gas environment (with an oxygen concentration of not more than 0.01% and a dew point of not more than −10° C.), followed by heating and drying; (2) pressure bonding a piece of solid sodium metal having a surface which exhibits a metallic luster onto a current collector in the aforementioned inert gas environment; (3) vapor-depositing sodium metal on a current collector in a reduced pressure environment; or (4) immersing a current collector having a surface fired at a temperature ranging from 150 to 300° C. in molten sodium metal after removing a coating film which is generated on a surface and formed from impurities, in the aforementioned inert gas environment.
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