公开(公告)号：EP2913874A4

公开(公告)日：2015-10-28

申请号：EP13848519

申请日：2013-10-25

申请人： WAKO PURE CHEM IND LTD ,  UNIV TOKYO SCIENCE FOUNDATION

发明人： KOMABA SHINICHI ,  YABUUCHI NAOAKI ,  HAN ZHEN-JI ,  SASAKI TAKEO ,  HASHIMOTO SHOTA ,  OKAMOTO KUNIAKI ,  MAESAWA TSUNEAKI

IPC分类号： H01M4/62 ,  C08F220/06 ,  C08G18/02 ,  C08G59/40 ,  C08K5/00 ,  C08K5/29 ,  C08L33/02 ,  C08L63/00 ,  C08L79/00 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052

CPC分类号： H01M4/622 ,  C08F122/02 ,  C08G18/025 ,  C08G59/40 ,  C08K5/0025 ,  C08L33/02 ,  C08L63/00 ,  C08L79/00 ,  H01M4/134 ,  H01M4/386 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2220/20 ,  C08F220/06 ,  C08F222/1006

摘要： It is an object of the present invention to provide an electrode capable of maintaining superior capacity retention without destruction of an electrode structure, even in the case of using an active material including silicon. The present invention relates to "a binder for a lithium cell, the binder comprising polyacrylic acid cross-liked by a cross-linking agent selected from the compounds described in the general formulae [1] to [13] and the polymer described in the general formula [14] (provided that the one which includes a functional group-containing vinylidene fluoride-based polymer is excluded)"; a "composition for producing an electrode of a lithium cell, the composition comprising 1) an active material containing silicon, 2) a conductive assistant and 3) a cross-linked-type polyacrylic acid (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)"; and an "electrode for a lithium cell, the electrode comprising 1) an active material containing silicon, 2) a conductive assistant, 3) a cross-linked-type polyacrylic acid, and 4) a current collector (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)".

公开(公告)号：EP3136483A4

公开(公告)日：2017-03-01

申请号：EP15782731

申请日：2015-04-21

申请人： WAKO PURE CHEM IND LTD ,  UNIV TOKYO SCIENCE FOUND

发明人： KOMABA SHINICHI ,  YAMAGIWA KIYOFUMI ,  AOKI SHOKO ,  OKAMOTO KUNIAKI ,  KIYOSU TAKAHIRO ,  MORI YASUYOSHI ,  MATSUURA TAKATOSHI ,  SATO MICHIHIKO

IPC分类号： H01M4/62 ,  C08F220/18 ,  C08F220/56 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587

CPC分类号： H01M4/622 ,  C08F220/18 ,  C08F220/56 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/386 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525

摘要： It is an object of the present invention to provide an electrode having superior charge-discharge capacity, even in the case of using an active material containing silicon. The present invention relates to "a binder for a lithium cell comprises a polymer having a monomer unit derived from acrylic acid, and 1 to 2 kinds of monomer units derived from the compound shown by the general formula (I), the general formula (II), or the general formula (III), as constituents, and cross-linked by a cross-linking agent selected from the compounds described by the following general formulae [1] to [13], and the polymer described by the following general formula [14]", "a composition for producing an electrode of a lithium cell comprising 1) an active material containing silicon, 2) a conductive assistant, and 3) the above-described binder for a cell", and "an electrode for a lithium cell having 1) an active material containing silicon, 2) a conductive assistant, 3) the above-described binder for a cell, and (4) a current collector".

摘要翻译： 本发明的目的在于提供一种即使在使用含有硅的活性物质的情况下也具有优异的充放电容量的电极。 本发明涉及“用于锂电池的粘合剂，其包含具有衍生自丙烯酸的单体单元的聚合物和衍生自通式（I）所示的化合物的1至2种单体单元，通式（II ）或通式（III）表示的聚合物作为构成成分，用选自下述通式[1]〜[13]中记载的化合物的交联剂进行交联，下述通式 “用于制造锂电池电极的组合物”包括1）包含硅的活性材料，2）导电助剂，和3）上述用于电池的粘合剂“，和”用于 锂电池，其具有1）含有硅的活性物质，2）导电助剂，3）上述电池用粘合剂和（4）集电体。

公开(公告)号：EP2962346A4

公开(公告)日：2016-11-09

申请号：EP14756849

申请日：2014-02-24

申请人： UMICORE NV ,  UMICORE KOREA LTD ,  UNIV TOKYO SCIENCE FOUNDATION

发明人： PAULSEN JENS ,  KOMABA SHINICHI ,  HARA RYO ,  YABUUCHI NAOAKI ,  KAJIYAMA MASATAKA

IPC分类号： C01G45/00 ,  C01G45/12 ,  H01M4/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/505 ,  H01M10/054

CPC分类号： H01M4/131 ,  C01G45/1228 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2004/61 ,  H01M4/0445 ,  H01M4/505 ,  H01M4/525 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/028

摘要： A sodium transition metal cathode material for a rechargeable sodium battery having a P2 layered bronze crystal structure, comprising at least 55 mol % manganese, wherein the manganese valence state is at least 3.75. The material undergoes a structural transformation to a secondary cathode material by extraction of sodium during the 1st charge of a rechargeable sodium battery comprising the sodium cathode material. The material has either a composition NaxMO2 where M=Mn1-y-zLiyAz where z