Nickel-titanium-phosphate cathodes

Details Nickel-titanium-phosphate cathodes Nickel-titanium-phosphate cathodes

2004-06-02

2008-12-16

Neckel, Alexa D (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S218100, C429S231500, C429S225000, C423S311000, C423S332000, C423S606000, C423S608000

Reexamination Certificate

active

07465520

ABSTRACT:
Cathode materials having an improved electronic conductivity allowing for faster kinetics in the electrochemical reaction, as well as higher conductivity to meet the power requirements for many consumer applications, especially at low temperatures. The cathode material comprises a compound from the family of compounds where the basic unit is generally represented by LixNi0.5TiOPO4. The structure of LixNi0.5TiOPO4includes corner sharing octahedra [TiO6] running along the C-axis. The structure is such that nearly three Li atoms are being inserted in LixNi0.5TiOPO4. A cell in accordance with the principles of the present invention is rechargable and demonstrates a high capacity of lithium intercalation and fast kinetics.

REFERENCES:
A. El Jazouli et al., Preparation and Structural Characterization of Two New Titanium Phosphates NaCa0.5Ti(PO4)3and Ni0.5TiOPO4, Ann. Chim. Sci. Mat, 1998, 23, pp. 7-10.
P. Gravereau et al., Ab Initio Determination and Rietveld Refinement of the Crystal Structure of Ni0.50TiO(PO4), Powder Diffr., Mar. 1999, pp. 10-15, vol. 14.

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