公开(公告)号：US09997300B2

公开(公告)日：2018-06-12

申请号：US15202584

申请日：2016-07-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuyuki Ito ,  Hiroyuki Yanagisawa ,  Koichi Morikawa ,  Eri Hirose ,  Nao Matsumura ,  Mitsuhiro Fujita

IPC: H01G11/26 ,  H01G11/28 ,  H01G11/68 ,  H01G11/38 ,  H01G11/42

CPC classification number: H01G11/26 ,  H01G11/24 ,  H01G11/28 ,  H01G11/38 ,  H01G11/42 ,  H01G11/68 ,  Y02E60/13

Abstract: A capacitor electrode includes a substrate having electrical conductivity, a conductive layer formed on a surface of the substrate, and an electrode layer formed on the conductive layer. The electrode layer is allowed to adsorb and desorb ions on a surface thereof. The conductive layer contains flake graphite. A density of the conductive layer is greater than 1.1 g/cm3. An average particle size D50 of the flake graphite, which is measured by using a dynamic light scattering method, is less than or equal to 10 μm.

公开(公告)号：US10431394B2

公开(公告)日：2019-10-01

申请号：US15381844

申请日：2016-12-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Eri Hirose ,  Mitsuhiro Fujita ,  Hiroyuki Yanagisawa ,  Yasuyuki Ito

IPC: H01G11/32 ,  H01G11/24

Abstract: An object of the present invention is to provide a capacitor excellent in reliability, of which charge-discharge characteristics are hardly deteriorated. The capacitor of the present invention includes: a capacitor element including a positive electrode and a negative electrode; and a case that stores the capacitor element together with an electrolytic solution, wherein at least one of the positive electrode and the negative electrode contains activated carbon, and a sum of volumes per unit weight of pores having a pore diameter of from 30 Å to 100 Å inclusive among pores of the activated carbon is 0.2 cm3/g or more.