The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2021
Filed:
Nov. 12, 2015
Sumitomo Electric Industries, Ltd., Osaka, JP;
Nippon Soda Co., Ltd., Tokyo, JP;
Koji Nitta, Osaka, JP;
Shoichiro Sakai, Osaka, JP;
Atsushi Fukunaga, Osaka, JP;
Eiko Imazaki, Osaka, JP;
Koma Numata, Osaka, JP;
Hideaki Ito, Joetsu, JP;
Hitoshi Kobayashi, Joetsu, JP;
Toshiaki Yamashita, Joetsu, JP;
Shinichi Maruyama, Joetsu, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Nippon Soda Co., Ltd., Tokyo, JP;
Abstract
Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.