公开(公告)号：US20240145765A1

公开(公告)日：2024-05-02

申请号：US17768731

申请日：2020-10-14

Applicant: ATTACCATO Limited Liability Company ,  ADEKA Corporation

Inventor： Takashi Mukai ,  Naoto Yamashita ,  Yuta Ikeuchi ,  Taichi Sakamoto ,  Kenji Kakiage ,  Tomofumi Yokomizo ,  Yohei Aoyama

IPC: H01M10/0562 ,  H01M4/04 ,  H01M4/36 ,  H01M4/02

CPC classification number: H01M10/0562 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/366 ,  H01M2004/021 ,  H01M2300/0068

Abstract: A non-aqueous electrolyte power storage device in which a coating material having a silanol group is present at least on a surface of an electrode active material layer and a sulfur-based material is contained in a cell, the electrode active material layer contains an electrode active material and a resin-based binder, the electrode active material is an active material capable of being alloyed with a metal element identical to an ion species responsible for electrical conduction or an active material capable of absorbing ions responsible for electrical conduction, and the coating material having a silanol group is a silicate containing a siloxane bond as a component or a silica fine particle aggregate (containing a siloxane bond as a component).

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：US10734684B2

公开(公告)日：2020-08-04

申请号：US15749513

申请日：2016-09-14

Applicant: ADEKA CORPORATION

Inventor： Yuta Nohara ,  Kenji Kakiage ,  Tomofumi Yokomizo ,  Hiroaki Watanabe ,  Yohei Aoyama ,  Toru Yano

IPC: H01M10/0567 ,  C07F7/18 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/42

Abstract: Disclosed is a nonaqueous secondary battery having a nonaqueous electrolyte containing a lithium salt dissolved in an organic solvent, in which the positive electrode active material is preferably a manganese-containing, lithium transition metal oxide salt. The nonaqueous electrolyte contains at least one compound of general formula (1), preferably at least one compound of general formula (1′). The content of the compound of formula (1) or (1′) in the nonaqueous electrolyte is preferably 0.001 to 10 mass %. The symbols in formulae (1) and (1′) are as defined in the description.

公开(公告)号：US10096858B2

公开(公告)日：2018-10-09

申请号：US15109902

申请日：2015-03-06

Applicant: ADEKA CORPORATION

Inventor： Tomofumi Yokomizo ,  Toru Yano ,  Hiroaki Watanabe ,  Yohei Aoyama ,  Tomomi Seri ,  Yuta Nohara

IPC: H01M10/0567 ,  H01M10/0525

Abstract: Provided are a nonaqueous electrolyte excellent in the prevention of overcharge and capable of retaining a small internal resistance and a high electrical capacity even after charge/discharge cycles and a nonaqueous secondary battery using the same. Specifically, the nonaqueous electrolyte is a lithium salt solution in an organic solvent and contains at least one compound having general formula (1), and the nonaqueous secondary battery includes a negative electrode capable of intercalating and deintercalating lithium, a positive electrode containing a transition metal and lithium, and the nonaqueous electrolyte. The details of formula (1) are also provided.

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 %.

公开(公告)号：US10388989B2

公开(公告)日：2019-08-20

申请号：US15549441

申请日：2016-03-02

Applicant: ADEKA CORPORATION

Inventor： Tomofumi Yokomizo ,  Yuta Nohara

IPC: H01M10/0567 ,  H01M10/0525

Abstract: A nonaqueous electrolyte having a lithium salt dissolved in an organic solvent and a nonaqueous secondary battery using the same are disclosed. The nonaqueous electrolyte is characterized by containing (A) at least one compound represented by general formula (1) (wherein symbols are as defined in the description) and (B) at least one compound having two or more groups selected from a vinyl group, an allyl group, and a propargyl group per molecule. Component (B) is preferably a compound having an ethylenically and acetylenically unsaturated bond equivalent of 150 or smaller.