Enhance cycling performance of LiMn2O4 cathode by Sr2+ and Cr3+ doping. (March 2015)

• Record Type: Journal Article
• Authors: Liang, X.; Zeng, S.; Liu, Y.; Shi, L.; Liu, T.
• Is Part Of: Materials science and technology. Volume 31:Number 4(2015:Apr.)
• Page Start: 443
• Page End: 447
• Publication Date: 2015-03
• Subjects: Lithium ion battery, -- Cycle performance, -- High current charge–discharge; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1179/1743284714Y.0000000625
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : Spinel LiSr0·1 Cr0·1 Mn1·8 O4 was synthesised by high temperature solid state method in order to enhance the electrochemical performance. The LiSr0·1 Cr0·1 Mn1·8 O4 (LSCMO) materials were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical tests. The XRD and SEM studies confirm that LSCMO had spinel crystal structure with a space group of Fd3m, and the particle of LSCMO shows irregular shape. The cyclic voltammetry data illustrated that the heavy current charge–discharge performance of LMO was improved by Sr 2+ and Cr 3+ doping. The galvanostatic charge–discharge of LSCMO cathode materials was measured at 1, 5, 10 and 20 C. The results indicated that LSCMO improved the capacity retention.