Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/106730
Kind Code:
A1
Abstract:
The purpose of the present disclosure is to provide a non-aqueous electrolyte secondary battery that has a high capacity and that achieves excellent suppression of deterioration in quick charge cycle characteristics. A non-aqueous electrolyte secondary battery according to an aspect of the present disclosure is provided with a negative electrode having: a negative electrode collector; a first negative electrode mixture layer provided on the surface of the negative electrode collector; and a second negative electrode mixture layer provided on the surface of the first negative electrode mixture layer. Each of the first negative electrode mixture layer and the second negative electrode mixture layer contains graphite particles. The ratio (S2/S1) of the inter-particle porosity (S2) of the graphite particles in the second negative electrode mixture layer to the inter-particle porosity (S1) of the graphite particles in the first negative electrode mixture layer is 1.1-2.0. The ratio (D2/D1) of the filling density (D2) of the second negative electrode mixture layer to the filling density (D1) of the first negative electrode mixture layer is 0.9-1.1.

More Like This:
JP4126732Manufacturing method of carbon material
WO/2023/056396BINDER COMPOSITION AND SLURRY COMPOSITION FOR LITHIUM-ION ELECTRICAL STORAGE DEVICES
JPH09219188NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND MANUFACTURE OF IT
Inventors:
YOKOI MAI
MIZUKOSHI FUMIKAZU
TASHITA TAKAMITSU
KATOGI AKIHIRO
Application Number:
PCT/JP2020/043104
Publication Date:
June 03, 2021
Filing Date:
November 19, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H01M4/133; H01M4/134; H01M4/36; H01M4/48
Foreign References:
JP2015511389A2015-04-16
JP2016042460A2016-03-31
JP2015537347A2015-12-24
JP2020095853A2020-06-18
JP2020145143A2020-09-10
JP2003077463A2003-03-14
JP2006196457A2006-07-27
JP2015511389A2015-04-16
Other References:
See also references of EP 4068422A4
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: SEALED BATTERY

Next Patent: BANDPASS FILTER