Title:
LITHIUM-ION CELL
Document Type and Number:
WIPO Patent Application WO/2013/129182
Kind Code:
A1
Abstract:
A lithium ion cell having a discharge capacity of 30 Ah to 125 Ah, in which an electrolytic solution and an electrode winding group in which a positive electrode, a negative electrode, and a separator are wound are provided in a cell container, wherein a positive electrode mix for a positive electrode having a collector and a positive electrode mix that is applied on both sides of the collector has the following composition. The positive electrode mix includes a mixed active material of a laminar lithium/nickel/manganese/cobalt complex oxide (NMC) and an olivine-type lithium iron phosphate (LFP), the density of the positive electrode mix being 2.0 g/cm3 to 2.6 g/cm3, and the amount of the positive electrode mix applied being 100 g/m2 to 200 g/m2. The weight ratio (NMC/LFP) of the mixed active material is 10/90 to 60/40. Alternatively, the relationship Y < -0.0067X + 1.84 (30 ≤ X ≤ 125) is satisfied, where X is the discharge capacity and Y is the abovementioned weight ratio.
Inventors:
NISHIYAMA HIROO (JP)
OKUMURA TAKEFUMI (JP)
KIMURA TAKAYUKI (JP)
OKUMURA TAKEFUMI (JP)
KIMURA TAKAYUKI (JP)
Application Number:
PCT/JP2013/053979
Publication Date:
September 06, 2013
Filing Date:
February 19, 2013
Export Citation:
Assignee:
SHIN KOBE ELECTRIC MACHINERY (JP)
International Classes:
H01M4/131; H01M4/1391; H01M4/1397; H01M4/485; H01M4/505; H01M4/525; H01M10/052; H01M10/0566; H01M10/0587
Foreign References:
| JP2011086405A | 2011-04-28 | |||
| JP2010225486A | 2010-10-07 | |||
| JP2007317534A | 2007-12-06 | |||
| JP2007317539A | 2007-12-06 | |||
| JP2007250433A | 2007-09-27 | |||
| JP2004047180A | 2004-02-12 |
Attorney, Agent or Firm:
TSUTSUI, YAMATO (JP)
Tsutsui Daiwa (JP)
Tsutsui Daiwa (JP)
Download PDF:
Claims: