公开(公告)号：US11038161B2

公开(公告)日：2021-06-15

申请号：US16357050

申请日：2019-03-18

Applicant: FDK CORPORATION

Inventor： Shota Ohata ,  Jun Ishida ,  Toshiki Sato ,  Akira Saguchi

IPC: H01M4/38 ,  H01M10/34 ,  H01M4/24 ,  H01M4/62 ,  H01M4/36 ,  H01M4/60 ,  H01M4/02

Abstract: A nickel-hydrogen secondary battery includes an electrode group which contains a positive electrode, a negative electrode, and a separator, wherein the negative electrode includes a negative electrode core, and a negative electrode mixture layer held by the negative electrode core, wherein the negative electrode mixture layer contains a fluororesin; a quantity of the fluororesin, expressed by a mass applied per unit area of the negative electrode, is within a range of 0.2 mg/cm2 or more and 2.0 mg/cm2 or less; and a fluororesin content which is a ratio of the fluororesin contained in a unit volume of the negative electrode mixture layer is higher in an inner layer portion than in an outer layer portion in the negative electrode mixture layer.

公开(公告)号：US20190319260A1

公开(公告)日：2019-10-17

申请号：US16383048

申请日：2019-04-12

Applicant: FDK CORPORATION

Inventor： Toshiki Sato ,  Jun Ishida ,  Akira Saguchi ,  Shota Ohata

IPC: H01M4/24 ,  H01M10/28 ,  H01M4/36 ,  H01M4/62 ,  H01M4/38

Abstract: A battery comprises an electrode group including a separator, a positive electrode and a negative electrode. The negative electrode comprises a negative electrode core, negative electrode mixture layers retained to the negative electrode core, and a fluorine resin layer disposed on the surface of the negative electrode mixture layers. The negative electrode mixture layers include a first outermost peripheral region located at the outermost periphery of the electrode group and a second outermost peripheral region located opposite to the first outermost peripheral region. When the amount of the fluorine resin constituting a first fluorine resin layer in a portion of the first outermost peripheral region is represented by A, and the amount of the fluorine resin constituting a second fluorine resin layer in a portion of the second outermost peripheral region is represented by B, a relation A>B is satisfied.

公开(公告)号：US11043664B2

公开(公告)日：2021-06-22

申请号：US16383048

申请日：2019-04-12

Applicant: FDK CORPORATION

Inventor： Toshiki Sato ,  Jun Ishida ,  Akira Saguchi ,  Shota Ohata

IPC: H01M4/24 ,  H01M4/36 ,  H01M4/62 ,  H01M4/38 ,  H01M10/28 ,  H01M4/02

Abstract: A battery comprises an electrode group including a separator, a positive electrode and a negative electrode. The negative electrode comprises a negative electrode core, negative electrode mixture layers retained to the negative electrode core, and a fluorine resin layer disposed on the surface of the negative electrode mixture layers. The negative electrode mixture layers include a first outermost peripheral region located at the outermost periphery of the electrode group and a second outermost peripheral region located opposite to the first outermost peripheral region. When the amount of the fluorine resin constituting a first fluorine resin layer in a portion of the first outermost peripheral region is represented by A, and the amount of the fluorine resin constituting a second fluorine resin layer in a portion of the second outermost peripheral region is represented by B, a relation A>B is satisfied.

公开(公告)号：US20190305301A1

公开(公告)日：2019-10-03

申请号：US16357050

申请日：2019-03-18

Applicant: FDK CORPORATION

Inventor： Shota Ohata ,  Jun Ishida ,  Toshiki Sato ,  Akira Saguchi

IPC: H01M4/36 ,  H01M10/34 ,  H01M4/38 ,  H01M4/60

Abstract: A nickel-hydrogen secondary battery includes an electrode group which contains a positive electrode, a negative electrode, and a separator, wherein the negative electrode includes a negative electrode core, and a negative electrode mixture layer held by the negative electrode core, wherein the negative electrode mixture layer contains a fluororesin; a quantity of the fluororesin, expressed by a mass applied per unit area of the negative electrode, is within a range of 0.2 mg/cm2 or more and 2.0 mg/cm2 or less; and a fluororesin content which is a ratio of the fluororesin contained in a unit volume of the negative electrode mixture layer is higher in an inner layer portion than in an outer layer portion in the negative electrode mixture layer.