Daikin Industries, Ltd.

Kazuki Hosoda

Takahiro Kitahara

Chihiro Shinoda

Manabu Fujisawa

Kazuya Asano

Takashi Iguchi

Yuuki Kuwajima

Masamichi Morita

Kenji Ichikawa

Hayato Tsuda

Hiroki Yamaguchi

Kazunobu Uchida

Atsushi Sakakura

Toshiaki Masui

Tomoyuki Goto

Yuma Ichinose

Yuuko Iwamatsu

An object of the present disclosure is to provide a film that has high water slidability, and a substrate having a surface covered with the film. The present disclosure provides a film having the properties of a sliding velocity of 150 mm/s or more at an inclination angle of 30° and an average surface roughness (Ra) of 1 μm or less, and further provides a substrate having a surface covered with the film.

Film and substrate having surface covered with same

Provided is a positive electrode structure including a current collector and a positive electrode mixture layer provided on one or each of both sides of the current collector, wherein the positive electrode mixture layer has a thickness of 69 μm or more, the positive electrode mixture layer has a density of 3.0 to 5.0 g/cm, the positive electrode mixture layer includes a positive electrode active material and a binder, the positive electrode active material includes a lithium-nickel composite oxide, the binder includes a fluorine-containing copolymer, the fluorine-containing copolymer contains a vinylidene fluoride unit and a fluorinated monomer unit (excluding the vinylidene fluoride unit), and the fluorine-containing copolymer has a storage modulus (E') at 30° C. of 100 to 1,100 MPa and a storage modulus (E′) at 60° C. of 50 to 500 MPa, as measured by dynamic viscoelasticity.

Positive electrode structure and secondary battery

A fluororesin including a vinylidene fluoride unit and a tetrafluoroethylene unit. The fluororesin has a gas chromatography-mass spectrometry total ion chromatogram including a peak which is assigned to a component having a molecular weight of 202 to 903 and which has a peak intensity of 1000 or lower. Also disclosed is a molded article formed from the fluororesin.

Fluororesin and molded object

A binder for a secondary battery containing a fluorine-containing polymer (A) and polyvinylidene fluoride (B). The fluorine-containing polymer (A) contains a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2): wherein R, R, and Rare each independently a hydrogen atom or a C1-C8 hydrocarbon group; Ris a C1-C8 hydrocarbon group; and Yis an inorganic cation or an organic cation. Also disclosed is an electrode mixture and an electrode for a secondary battery including the binder, and a secondary battery including the electrode.

Binder for secondary battery, electrode mixture for secondary battery, electrode for secondary battery and secondary battery

A binder and an electrode mixture for a secondary battery. The binder contains a fluorine-containing polymer containing a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2):RRC&#x2550;CRRCOY&#x2003;&#x2003;(2-2)wherein R, R, and Rare each independently a hydrogen atom or a C1-C8 hydrocarbon group; Ris a C1-C8 hydrocarbon group; and Yis an inorganic cation and/or an organic cation.

Binder for secondary batteries and electrode mixture for secondary batteries

Growing community of inventors

Osaka, Japan

Kazuki Hosoda