Title:
COMBINED POSITIVE ELECTRODE STRUCTURE USING Li2S
Document Type and Number:
Japanese Patent JP2015220225
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve lifetime of a lithium sulfur battery, in which a sulfur positive electrode is solid sulfur in a completely-charged state and is LiS in a discharged state, the LiS having a volume corresponding to 180% of sulfur, and to resolve a problem that, when charge and discharge are repeated, the structure of the positive electrode of the lithium sulfur battery is collapsed by expansion and contraction of volume caused by this.SOLUTION: Provided is a positive electrode structure combined and surrounded by using LiS powder as a conductive material. The structure maintains such a structure whose volume matches an active material in an expansion state, and thereby, collapse of a positive electrode structure caused by expansion of volume is avoided even after repeated charge and discharge cycles, and lifetime of the lithium sulfur battery is improved.
Inventors:
LEE HO TAEK
SON SAM ICK
SON SAM ICK
Application Number:
JP2014248379A
Publication Date:
December 07, 2015
Filing Date:
December 08, 2014
Export Citation:
Assignee:
HYUNDAI MOTOR COMPANY CO LTD
International Classes:
H01M4/1397; H01M4/36; H01M4/58; H01M4/62; H01M4/66
Domestic Patent References:
| JP2006032143A | 2006-02-02 | |||
| JP2013225496A | 2013-10-31 | |||
| JP2010257689A | 2010-11-11 | |||
| JP2014035944A | 2014-02-24 | |||
| JP2003518713A | 2003-06-10 | |||
| JP2013212975A | 2013-10-17 |
Foreign References:
| WO2014027272A2 | 2014-02-20 |
Attorney, Agent or Firm:
Hirohito Katsunuma
Yukihiro Hotta
Hakoda Mitsuru
Yukihiro Hotta
Hakoda Mitsuru