公开(公告)号：US20200052271A1

公开(公告)日：2020-02-13

申请号：US16489466

申请日：2018-03-07

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO

IPC: H01M2/16 ,  C08L33/12

Abstract: Provided is a functional layer for a non-aqueous secondary battery having reduced water content and excellent heat resistance and adhesiveness. The functional layer for a non-aqueous secondary battery contains a heat resistant resin and an acidic group-containing polymer. The percentage content of chlorine atoms in the functional layer for a non-aqueous secondary battery as measured by combustion ion chromatography is not less than 0.001 mass % and not more than 2.000 mass %.

公开(公告)号：US20150357648A1

公开(公告)日：2015-12-10

申请号：US14761210

申请日：2014-02-04

Applicant: ZEON CORPORATION

Inventor： Takumi SUGIMOTO ,  Ikuya MESUDA

IPC: H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/623 ,  H01M4/139 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/028

Abstract: To provide a slurry for positive electrodes having excellent weight accuracy at the time of application, which enables the production of a lithium ion secondary battery that has high capacity and excellent cycle characteristics at high potentials, said lithium ion secondary battery being flexible and free from the occurrence of cracks in an active material layer when bent.[Solution] A slurry for lithium ion secondary battery positive electrodes according to the present invention contains a positive electrode active material, a binder, a conductive material and an organic solvent. The binder contains a nitrile group-containing acrylic polymer and a fluorine-containing polymer; and the viscosity ratio ((viscosity at a shear rate of 2 sec−1)/(viscosity at a shear rate of 20 sec−1)) of this slurry as measured by a coaxial double cylinder viscometer is 1.0-2.5.

Abstract translation: 为了提供在应用时具有优异的重量精度的正极用浆料，能够制造高电位的高容量和优异的循环特性的锂离子二次电池，所述锂离子二次电池是柔性的并且不含 弯曲时活性物质层发生裂纹。 [方案]根据本发明的用于锂离子二次电池正极的浆料包含正极活性材料，粘合剂，导电材料和有机溶剂。 粘合剂含有含腈基的丙烯酸类聚合物和含氟聚合物; 通过同轴双筒粘度计测定的该浆料的粘度比（（剪切速度2秒-1下的粘度）/（剪切速度为20秒-1时的粘度））为1.0〜2.5。