Improvement of the electrochemical performance of LiFePO4 cathode by Y-doping. (17th August 2017)

• Record Type: Journal Article
• Authors: Herrera, F.; Fuenzalida, F.; Marquez, P.; Gautier, J. L.
• Is Part Of: MRS communications. Volume 7:Number 3(2017)
• Page Start: 515
• Page End: 522
• Publication Date: 2017-08-17
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1557/mrc.2017.71
• Languages: English
• ISSNs: 2159-6859

Abstract

Abstract: Abstract : LiFe1− x Y x PO4 doped (d-LFP) with amounts of yttrium (0.01% < x < 5% w/w) show a remarkable effect on the electrochemical behavior. The d-LPF samples were investigated on the Li extraction/insertion performance through charge/discharge and capacity–voltage curves. The best performance was attained with Y content of x = 1%. The materials were synthesized by a hydrothermal method and characterized by x-ray diffraction (XRD) and scanning electron microscopy–energy dispersive x-ray spectroscopy (SEM–EDX). The XRD studies showed that d-LPF had the same monoclinic structure as the undoped material. The achieved electrode performance has been attributed to the addition of Y 3+ ion by stabilizing the orthorhomic structure. The electrode resistance decreases through the Y-doping.