%0 Journal Article
%T Combustion synthesis and electrochemical evaluation of Cr
%A Arlavinda Rezqita
%A Atanaska Trifonova
%A Irina Gocheva
%A J¨¹rgen Kahr
%A Raad Hamid
%A Simeon Stankov
%J Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
%@ 2041-2983
%D 2019
%R 10.1177/0954406217750690
%X In this work, the effect of Cr3+ partial substitution on vanadium site in monoclinic lithium vanadium(III) phosphate (LVP) structure resulting in compounds with general formula: Li3V2-xCrx(PO4)3-C (x£¿=£¿0, 0.05, 0.1, 0.15) was studied. A two-step sol-gel combustion method was employed in syntheses. The samples were characterized by X-ray powder diffraction, scanning electron microscopy, coupled plasma optical emission spectroscopy, and flash combustion. The electrochemical performance of the active materials was examined through rate capability tests and cyclic voltammetry. The unsubstituted compound LVPC delivers higher capacity compared to the Cr-containing samples due to chromium inactivity in the potential range 3.0¨C4.4£¿V vs. Li/Li+. However, the Cr-substituted materials show better overall capacity retention (97¨C97.6%) in contrast to Li3V2(PO4)3-C (96%) in long cycling
%K Li-ion battery
%K lithium vanadium phosphate
%K positive active material
%K electrochemical performance
%K substitution
%U https://journals.sagepub.com/doi/full/10.1177/0954406217750690