公开(公告)号：US10193141B2

公开(公告)日：2019-01-29

申请号：US15121110

申请日：2015-02-24

Applicant: TODA KOGYO CORP. ,  DENKA COMPANY LIMITED

Inventor： Akihisa Kajiyama ,  Teruaki Santoki ,  Daisuke Morita ,  Ryuta Masaki ,  Takahiko Sugihara ,  Tsuyoshi Wakiyama ,  Kazutoshi Matsumoto ,  Akira Yoda ,  Taro Inada ,  Hiroshi Yokota ,  Takashi Kawasaki

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/131 ,  H01M4/136 ,  H01M4/58 ,  H01M10/052 ,  H01M4/02

Abstract: An object of the present invention is to provide a positive electrode mixture capable of conducting stable charging and discharging with a less amount of gasses generated which has an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium. The present invention relates to a positive electrode mixture comprising carbon black having a bulk density of not more than 0.1 g/cm3, a crystallite size of 10 to 40 Å, an iodine adsorption of 1 to 150 mg/g, a volatile content of not more than 0.1% and a metal impurity content of not more than 20 ppm, and a positive electrode active substance having an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium.

公开(公告)号：US11492266B2

公开(公告)日：2022-11-08

申请号：US16663546

申请日：2019-10-25

Applicant: TODA KOGYO CORP.

Inventor： Akihisa Kajiyama ,  Ryuta Masaki ,  Tsuyoshi Wakiyama ,  Tetsuya Kashima ,  Shoichi Fujino ,  Osamu Sasaki ,  Kazutoshi Matsumoto

IPC: C01G51/00 ,  H01M4/525 ,  C01G53/00 ,  C01G45/12 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided herein are processes for producing positive electrode active substance particles for non-aqueous electrolyte secondary batteries which is excellent in life characteristics of a battery with respect to a repeated charging and discharging performance thereof, as well as a non-aqueous electrolyte secondary battery. In particular, provided herein are processes for producing a positive electrode active substance for non-aqueous electrolyte secondary batteries comprising lithium transition metal layered oxide having a composition represented by the formula: Lia(NixCoyMn1-x-y)O2 wherein a is 1.0≤a≤1.15; x is 0