公开(公告)号：US12209156B2

公开(公告)日：2025-01-28

申请号：US17763839

申请日：2020-09-14

Applicant: ADEKA CORPORATION

Inventor： Hiromi Takenouchi ,  Kensaku Akimoto ,  Kenji Kakiage ,  Hirokatsu Shinano ,  Tomofumi Yokomizo

IPC: C08F8/34 ,  C08F20/44

Abstract: The present invention provides a method of producing sulfur-modified polyacrylonitrile, including: a step (1) of heating polyacrylonitrile and elemental sulfur in a rotating-type heating container including a discharge pipe and a sulfur vapor recovery unit while rotating the rotating-type heating container; a step (2) of liquefying a sulfur vapor by the sulfur vapor recovery unit while discharging hydrogen sulfide generated in the heating step; and a step (3) of returning the liquefied sulfur to a mixture of the sulfur and the polyacrylonitrile of the step (1).

公开(公告)号：US11594732B2

公开(公告)日：2023-02-28

申请号：US16960782

申请日：2019-02-25

Applicant: ADEKA CORPORATION

Inventor： Hiromi Takenouchi ,  Tomofumi Yokomizo ,  Hirokatsu Shinano ,  Kenji Kakiage ,  Yuta Nohara ,  Yohei Aoyama

IPC: H01M4/60 ,  C08F8/36 ,  C08K3/08

Abstract: Disclosed is an electrode active material that has a large charge discharge capacity, a high initial efficiency, as well as excellent cycle characteristics and rate characteristics and is favorably used in a non-aqueous electrolyte secondary battery. An organo sulfur-based electrode active material contains sodium and potassium in a total amount of 100 ppm by mass to 1000 ppm by mass; an electrode for use in a secondary battery, the electrode containing the organo sulfur-based electrode active material as an electrode active material; and a non-aqueous electrolyte secondary battery including the electrode. Preferably, the organo sulfur-based electrode active material further contains iron in an amount of 1 ppm by mass to 20 ppm by mass. Preferably, the organo sulfur-based electrode active material is sulfur-modified polyacrylonitrile, and the amount of sulfur in the organo sulfur-based electrode active material is 25 mass % to 60 mass %.