Title:
METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERIES
Document Type and Number:
WIPO Patent Application WO/2012/043878
Kind Code:
A1
Abstract:
A method for producing a positive electrode active material for lithium ion batteries having a process that involves: mixing salts or oxides of the elements constituting a lithium transition metal oxide represented by the general formula LixMyPzOw (however, M represents a combination of transition metal elements, and X, Y, Z and W represent the component ratio of the elements in one molecule); after producing a mixture, irradiating the mixture with millimeter waves having a frequency of 10-100GHz, inclusive; and heat treating. This production method makes it possible to produce a positive electrode active material for lithium ion batteries that is of high quality, has low energy loss, and does not require crushing.
Inventors:
WAKIDA KEIICHI (JP)
IMAEDA MINORU (JP)
IMAEDA MINORU (JP)
Application Number:
PCT/JP2011/073031
Publication Date:
April 05, 2012
Filing Date:
September 29, 2011
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
WAKIDA KEIICHI (JP)
IMAEDA MINORU (JP)
WAKIDA KEIICHI (JP)
IMAEDA MINORU (JP)
International Classes:
H01M4/525; H01M4/505; H01M4/58
Foreign References:
| JPH11511290A | 1999-09-28 | |||
| JP2002510594A | 2002-04-09 | |||
| JP2002313335A | 2002-10-25 |
Other References:
HANXING LIUA ET AL.: "Solid chemical reaction in microwave and millimeter-wave fields for the syntheses of LiMn204 compound", MATERIALS CHEMISTRY AND PHYSICS, vol. 88, 2004, pages 290 - 294, XP004598756, DOI: doi:10.1016/j.matchemphys.2004.06.037
S. BALAJI ET AL.: "A review on microwave synthesis of electrode materials for lithium- ion batteries", IONICS, vol. 15, no. 6, 2009, pages 765 - 777, XP055220117, DOI: doi:10.1007/s11581-009-0350-4
WEI LI ET AL.: "Preparation and characterization of LiFeP04 from NH4FePO4-H20 under different microwave heating conditions", JOURNAL OF SOLID STATE ELECTROCHEMISTRY, vol. 11, no. 6, 2007, pages 799 - 803, XP019493551
S. BALAJI ET AL.: "A review on microwave synthesis of electrode materials for lithium- ion batteries", IONICS, vol. 15, no. 6, 2009, pages 765 - 777, XP055220117, DOI: doi:10.1007/s11581-009-0350-4
WEI LI ET AL.: "Preparation and characterization of LiFeP04 from NH4FePO4-H20 under different microwave heating conditions", JOURNAL OF SOLID STATE ELECTROCHEMISTRY, vol. 11, no. 6, 2007, pages 799 - 803, XP019493551
Attorney, Agent or Firm:
WATANABE, Kazuhira (JP)
Ippei Watanabe (JP)
Ippei Watanabe (JP)
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Claims: