The Japan Steel Works, Ltd.

Kyoto Institute of Technology

National University Corporation Kyoto Institute of Technology

Ryo Ishiguro

Satoru Nakamura

Sotaro Nambu

Midori Takasaki

Mariko Yoshioka

Yoshiyuki Kushizaki

Norio Tsujioka

Kazuki Matsumoto

A solid electrolyte membrane having favorable characteristics and a method of forming the same are provided. A solid electrolyte membraneis composed of a non-woven fabric (ultrafine fiber non-woven fabric) UFN and solid electrolyte particlesAP incorporated therein. Also, the non-woven fabric UFN includes a fiber (ultrafine fiber UF) made of a resin containing a polar filler. A method of manufacturing the solid electrolyte membraneincludes a step of preparing the non-woven fabric UFN including a fiber made of a resin containing a polar filler, a step of applying a slurry S containing the solid electrolyte particlesAP onto the non-woven fabric UFN, and a step of heating while pressurizing the slurry S on the non-woven fabric UFN. Further, the non-woven fabric UFN is formed by making the resin containing the polar filler be a fibrous form by a laser electrospinning method.

Non-woven fabric, method of manufacturing non-woven fabric, solid electrolyte membrane, method of manufacturing solid electrolyte membrane, all-solid-state battery, and method of manufacturing all-solid-state battery

A method of manufacturing an all-solid-state battery and an apparatus for manufacturing the same are provided. The method of manufacturing the all-solid-state battery includes: (a) a step of forming a non-woven fabric having a fiber made of a resin; (b) a step of applying a slurry containing solid electrolyte particles onto the non-woven fabric; (c) a step of drying the slurry on the non-woven fabric by a heater; (d) a step of pressurizing the slurry on the non-woven fabric by a roller; (e) a step of forming a positive electrode member on one surface of the solid electrolyte membrane; and (f) a step of forming a negative electrode member on the other surface of the solid electrolyte membrane. The step (a) is a step of forming the non-woven fabric by making a resin containing a polar filler fibrous by a laser electrospinning method. By such a method, the all-solid-state battery (a laminated body of a positive electrode member, a solid electrolyte membrane, and a negative electrode member) can be efficiently manufactured.

Method of manufacturing a solid electrolyte membrane

An apparatus for continuously producing chemically-modified cellulose, the apparatus having a first mechanism for transporting a fine-powder cellulose fiber starting material and a hydrophobizing chemical substance, a specific extruder, a solvent tank connected to the extruder, and a dryer connected to the solvent tank, and a method for continuously producing chemically-modified cellulose, the method having a step of washing, in the solvent tank, chemically-modified cellulose having been produced out of the fine-powder cellulose fiber starting material and the hydrophobizing chemical substance in the extruder, and then drying the chemically-modified cellulose in the dryer, in order to remove any unreacted hydrophobizing chemical substance.

Apparatus for continuously producing chemically-modified cellulose and method used in same

Growing community of inventors

Hiroshima, Japan

Ryo Ishiguro