Improvement of High Rate Performances for Ti-Doped Li3V2(PO4)3 Cathode Materials

Dai OKADA, Fumiya NAKANO, Kazuyoshi UEMATSU, Hirokazu OKAWA, Atsushi ITADANI, Kenji TODA, Mineo SATO
2015 Electrochemistry (Tokyo. 1999)  
Ti-doped lithium vanadium(III) phosphate cathode materials, Li 3−2x (V 1−x Ti x ) 2 (PO 4 ) 3 , were prepared by a solid state reaction. The Ti-doped samples exhibited that the γ-phase is stabilized at room temperature by substituting Ti for V sites at more than x = 0.10. The discharge capacity of the doped samples at a 60 C rate was found to be much higher than that for the non doped sample. This improved performance found for the doped cathodes was attributed to the increase in ionic
more » ... ity given by the transition of αto γ-phase via Ti substitution.
doi:10.5796/electrochemistry.83.828 fatcat:qu2izfvqafeu5n5qofrs53ixoi