Title:
電気化学素子用電極およびその製造方法
Document Type and Number:
Japanese Patent JP5647447
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electrode for an electrochemical element that has low resistance and has excellent withstand voltage characteristics.SOLUTION: The electrode for an electrochemical element comprises a current collector, a conductive layer formed on a surface of the current collector and including conductive carbon particles and a first binder, and an active material layer formed on a surface of the conductive layer and including active material particles and a second binder. The conductive carbon particles include a small-particle group and a large-particle group. The volume particle size distribution of the small-particle group has a peak in 3-7 μm range, the volume particle size distribution of the large-particle group has a peak in 10-20 μm range, and the weight ratio of the small-particle group to the large-particle group (small-particle group/large-particle group) is 95/5-50/50. An interface between the conductive layer and the active material layer has a roughness with a maximum height Rmax of 10 μm or more.
Inventors:
西野 敦
山口 将彦
内堀 輝男
砂子 勇人
山口 将彦
内堀 輝男
砂子 勇人
Application Number:
JP2010149929A
Publication Date:
December 24, 2014
Filing Date:
June 30, 2010
Export Citation:
Assignee:
ダイニック株式会社
西野 敦
西野 敦
International Classes:
H01G11/24; H01M4/02; H01G11/02; H01G11/22; H01G11/26; H01G11/28; H01G11/32; H01G11/38; H01G11/42; H01G11/86; H01M4/04; H01M4/13; H01M4/139; H01M4/62
Attorney, Agent or Firm:
Shin-ichi Kawasaki
Masaru Egawa
Masaru Egawa