Cathode active material for lithium secondary cell and...

Details Cathode active material for lithium secondary cell and... Cathode active material for lithium secondary cell and...

2006-01-17

2006-01-17

Kalafut, Stephen J (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231500, C429S231600, C429S231950, C429S223000, C429S229000, C423S138000, C423S306000, C423S307000, C423S551000, C423S558000

Reexamination Certificate

active

06986968

ABSTRACT:
A cathode active material for a lithium secondary cell used in a cellular phone is disclosed. The cathode active material for the lithium secondary cell and the method the same having a high capacity and a long lifetime, different from LiCoO2and LiMn2O4, Li(Ni, Co)O2, and V-system oxide that has been researched as the active material for substituting LiCoO2are provided. The cathode active material for the lithium secondary cell in the next formula 1 is obtained by heating or chemically treating diadochite [Fe2(PO4)(SO4)(OH).6H2O] that is the mineral containing PO43−, SO42−, and OH−.in-line-formulae description="In-line Formulae" end="lead"?LiaFebMc(PO4)x(SO4)y(OH)z  (1)in-line-formulae description="In-line Formulae" end="tail"?In the formula, M is at least one element selected from a radical consisting of Mg, Ti, Cr, Mn, Co, Ni, Cu, Zn, Al, and Si, with 0≦a, c≦0.5, 1≦b≦2, 0.5≦x, y, z≦1.5.

REFERENCES:
patent: 2301103 (1942-11-01), Wilson et al.
patent: 5194241 (1993-03-01), Derka
patent: 5296238 (1994-03-01), Sugiura et al.
patent: 5908716 (1999-06-01), Barker
patent: 5910382 (1999-06-01), Goodenough et al.
patent: 6187192 (2001-02-01), Johnston et al.
patent: 6319632 (2001-11-01), Amine
patent: 2004/0086445 (2004-05-01), Armand et al.
patent: 2004/0111873 (2004-06-01), Okawa et al.
Webmineral Internat Website: Page “Diadochite” http://webmineral.com/data/Diadochite.shtml, and page “Mineral Help” http://webmineral.com/help/IMAStatus.shtml (Sep. 2000).
Young Sik Hong, et al :Amorphouse FePO4as 3 V cathode material for lithium secondary batteries; Journal of Materials Chemistry; Dec. 2002; pp. 1870-1874.

Affiliated with

Also associated with

Rating

Cathode active material for lithium secondary cell and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cathode active material for lithium secondary cell and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathode active material for lithium secondary cell and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3530137