公开(公告)号：US20150137029A1

公开(公告)日：2015-05-21

申请号：US14402251

申请日：2013-05-20

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Toshiki Ichisaka ,  Takashi Iguchi ,  Tomoyuki Fukatani ,  Kazunobu Uchida ,  Takuji Ishikawa ,  Norimasa Uesugi ,  Takahiro Kitahara

IPC: H01M4/62 ,  H01M4/525

CPC classification number: H01M4/623 ,  H01M4/139 ,  H01M4/525 ,  H01M4/625 ,  Y02E60/122

Abstract: The present invention aims to provide an electrode mixture which shows little change in viscosity even after 24 hours from the preparation of the mixture and enables production of an electrode having a high electrode density and excellent flexibility and is capable of giving excellent electric properties to the resulting cell. The present invention relates to an electrode mixture including a powdery electrode material; a binder; and an organic solvent, the binder including a fluorine-containing polymer including a polymer unit based on vinylidene fluoride and a polymer unit based on tetrafluoroethylene, the fluorine-containing polymer including the polymer unit based on vinylidene fluoride in an amount of 80.0 to 89.0 mol % based on all the polymer units, and the organic solvent being N-methyl-2-pyrolidone and/or N,N-dimethylacetamide.

Abstract translation: 本发明的目的在于提供即使在从混合物制备24小时后粘度变化不大的电极混合物，能够制造电极密度高，柔软性优异的电极，能够得到优异的电性能 细胞。 本发明涉及包含粉末电极材料的电极混合物; 粘合剂 和有机溶剂，所述粘合剂包括包含基于偏二氟乙烯的聚合物单元的含氟聚合物和基于四氟乙烯的聚合物单元，所述含氟聚合物包含基于偏二氟乙烯的聚合物单元，其量为80.0至89.0mol 基于所有聚合物单元的％，有机溶剂为N-甲基-2-吡咯烷酮和/或N，N-二甲基乙酰胺。