公开(公告)号：US20220200006A1

公开(公告)日：2022-06-23

申请号：US17605814

申请日：2020-04-17

Applicant: DENKA COMPANY LIMITED

Inventor： Akira YODA ,  Tatsuya NAGAI ,  Tetsuya ITO

IPC: H01M4/62 ,  C09C1/56 ,  H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/1391

Abstract: A slurry including at least a carbon black and a dispersion medium, wherein a concentration of the carbon black in the slurry is 5% by mass or more and 25% by mass or less, and wherein in a volume-based frequency distribution of particle size of the carbon black measured by a laser diffraction/scattering method, provided that a volume concentration of carbon black with a particle size of 0.6 μm or more is x (%), a volume concentration of carbon black with a particle size of 0.3 μm or more and less than 0.6 μm is y (%), and a volume concentration of carbon black having a particle size of less than 0.3 μm is 100−(x+y) (%), the slurry satisfies 10≤x≤70, 30≤y≤90, and 0≤100−(x+y)≤30.

公开(公告)号：US20160372740A1

公开(公告)日：2016-12-22

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 ,  Taroh INADA ,  Hiroshi YOKOTA ,  Takashi KAWASAKI

IPC: H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/62

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/136 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028

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.

Abstract translation: 本发明的目的是提供一种正极混合物，其能够以较少量的气体进行稳定的充放电，其具有基于锂的工作电压或不小于4.5V的初始晶体相变电压 。 本发明涉及包含炭黑的正极混合物，其堆积密度不大于0.1g / cm 3，微晶尺寸为10至40，碘吸附为1至150mg / g，挥发物含量不为 大于0.1％，金属杂质含量为20ppm以下，以锂为基准的工作电压或初期晶体相变电压为4.5V以上的正极活性物质。