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Title:
PROCESS FOR PRODUCTION OF IRON SULFIDE/LITHIUM COMPOSITE
Document Type and Number:
WIPO Patent Application WO/2010/084808
Kind Code:
A1
Abstract:
Provided is a process for production of an iron sulfide/lithium composite containing at least 50mol% of either Li3Fe2S4 and/or Li2.33Fe0.67S2, which is characterized by subjecting a raw material consisting of a sulfur-containing compound, an iron-containing compound, and a lithium-containing compound to heat treatment in a moisture-free and non-oxidizing atmosphere according to an electric current sintering method.  Also provided is a positive electrode active material for a lithium secondary battery, which consists of an iron sulfide/lithium composite obtained by the process. According to the process, a lithium-containing metal sulfide such as Li3Fe2S4 or Li2.33Fe0.67S2, or a composite containing the same can be easily and efficiently produced in a short time.

Inventors:
TAKEUCHI TOMONARI (JP)
SAKAEBE HIKARI (JP)
SAKAI TETSUO (JP)
SENOH HIROSHI (JP)
TATSUMI KUNIAKI (JP)
Application Number:
PCT/JP2010/050293
Publication Date:
July 29, 2010
Filing Date:
January 13, 2010
Export Citation:
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Assignee:
NAT INST OF ADVANCED IND SCIEN (JP)
TAKEUCHI TOMONARI (JP)
SAKAEBE HIKARI (JP)
SAKAI TETSUO (JP)
SENOH HIROSHI (JP)
TATSUMI KUNIAKI (JP)
International Classes:
C01G49/00; H01M4/58
Foreign References:
JP2003502265A2003-01-21
JP2004522674A2004-07-29
Other References:
"Abstracts of Meeting of Japan Society of Powder and Powder Metallurgy Heisei 20 Nendo Shunki Taikai, 27 May 2008 (27.05.2008)", article TOMONARI TAKEUCHI ET AL.: "Tsuden Shoketsu Process o Mochiita Kinzoku Ryukabutsu no Sakusei to sono Denchi Tokusei", pages: 198
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
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