Title:
Cathode material, a cathode for rechargeable lithium-ion batteries, rechargeable lithium-ion batteries, and those manufacturing methods
Document Type and Number:
Japanese Patent JP6272996
Kind Code:
B2
Abstract:
The invention addresses the problem of providing a lithium ion secondary battery excellent in initial charge-discharge characteristics and life characteristics. To solve the above problem, the invention provides a lithium ion secondary battery in which an electrode group 3 having a positive electrode 200 and a negative electrode 300 is housed in a battery can 4, wherein the negative electrode 300 includes a negative electrode active material supported on a negative electrode foil 301, and the negative electrode active material includes cores 30 having SiO as a main component, a composite oxide coating layer 31 of Fe and SiO2 disposed on the periphery of each of the cores 30, and a carbon coating layer 32 disposed on the periphery of the composite oxide coating layer 31 of Fe and SiO2.
Inventors:
Tanaka Sakei
Star wise
Shuichi Suzuki
Hiroshi Haruna
Star wise
Shuichi Suzuki
Hiroshi Haruna
Application Number:
JP2016520814A
Publication Date:
January 31, 2018
Filing Date:
May 19, 2014
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01M4/48; H01M4/36; H01M4/485; H01M10/0525
Domestic Patent References:
| JP2013034478A | ||||
| JP2009277485A | ||||
| JP2012134050A | ||||
| JP2013131324A |
Foreign References:
| WO2013038884A1 | ||||
| WO2012164834A1 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation