Synthesis, characterization, and electrochemical performance of V-doped Li2MnSiO4/C composites for Li-ion battery

摘要

High-capacity Li2MnSiO4/C (LMS/C) nanoparticles doped with V3+ were prepared using sonochemistry under multibubble sonoluminescence (MBS) conditions, and the physical and electrochemical properties of the nanoparticles were characterized. The results showed that substituting Mn2+ with V3+ was effective in reducing the grain size, purifying the crystalline phase, and enhancing the electrochemical properties. In particular, 5 and 10 mol% V3+-doped LMS/C exhibited diffusion coefficients of 5.58 x 10(-14) cm(2) s(-1) and 1.19 x 10(-13) cm(2) s(-1), respectively. (C) 2015 Elsevier B.V. All rights reserved.