公开(公告)号：US20240158230A1

公开(公告)日：2024-05-16

申请号：US18283624

申请日：2022-03-22

Applicant: DENKA COMPANY LIMITED

Inventor： Yusuke SASAKI ,  Kenji MIYATA ,  Kei KUBOBUCHI ,  Takako ARAI

IPC: C01B21/064 ,  C08K3/38

CPC classification number: C01B21/064 ,  C08K3/38 ,  C01P2004/03 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/21 ,  C01P2006/32 ,  C08K2003/385 ,  C08K2201/003 ,  C08K2201/006

Abstract: A method for producing a boron nitride particle, including: a step of pressurizing and heating a particle containing boron carbide under a nitrogen atmosphere to obtain a particle containing boron carbonitride; a step of putting a mixture containing a boron source containing at least one selected from the group consisting of boric acid and boron oxide and the particle containing boron carbonitride into a container; and a step of pressurizing and heating the mixture under a nitrogen atmosphere in a state where airtightness in the container has been enhanced to obtain a boron nitride particle, wherein an amount of boron atoms in the boron source is 1.0 to 2.2 mol with respect to 1 mol of the boron carbonitride in the mixture.

公开(公告)号：US20240217819A1

公开(公告)日：2024-07-04

申请号：US18283479

申请日：2022-03-22

Applicant: DENKA COMPANY LIMITED

Inventor： Yusuke SASAKI ,  Kenji MIYATA ,  Tomonari MIYAZAKI ,  Takako ARAI

IPC: C01B21/064

CPC classification number: C01B21/0648

Abstract: A boron nitride powder that is an aggregate of boron nitride particles, wherein, when each of 20 boron nitride particles A that are selected from the boron nitride powder is crushed, a ratio of an average value Y (μm) to an average particle diameter X (μm) is 0.20 or more, wherein each of 20 boron nitride particles A is crushed by gradually applying a load at a loading rate of 0.7 mN/second in an arbitrary direction, the average particle diameter X (μm) is an average particle diameter of the boron nitride powder before applying the load, and the average value Y (μm) is displacement amounts in the direction of the boron nitride particles A until crushing.

公开(公告)号：US20200227721A1

公开(公告)日：2020-07-16

申请号：US16822284

申请日：2020-03-18

Applicant: Denka Company Limited ,  CENTRAL GLASS COMPANY, LIMITED

Inventor： Shinichiro OSUMI ,  Tatsuya NAGAI ,  Takako ARAI ,  Tetsuya ITO ,  Hiroyuki OOMORI ,  Shoi SUZUKI ,  Akifumi YAO

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/1393

Abstract: To provide a carbon black for batteries capable of readily obtaining a positive electrode for batteries having excellent adhesiveness, and excellent output characteristics and the cycle characteristics. A carbon black for batteries, the carbon black having a BET specific surface area measured according to JIS K6217-2 C method of 100 m2/g or larger, and a surface fluorine concentration X (unit: atom %) and a surface oxygen concentration Y (unit: atom %) measured by X-ray Photoelectron Spectroscopy (XPS) satisfying the following conditions (A) and (B), 0.3≤X≤4.0 and  (A) 0.1≤Y≤3.0.  (B)