Low temperature and atmospheric pressure fabrication of Li3VO4/rGO hybrid as high-performance anode for lithium-ion batteries

Abstract

Li3VO4 particles anchored on reduced graphene oxide hybrid (Li3VO4/rGO) are firstly fabricated through a solvent thermal method at low temperature and atmospheric pressure. In the Li3VO4/rGO, rGO reduces the particle size of Li3VO4 and improves the electronic conductivity of the hybrid, resulting in excellent reaction kinetics and high pseudocapacitive charge storage of 69.3%, giving rise to superb electrochemical performance as anode for Li-ion batteries. After 200 cycles at 0.15 A g−1, the Li3VO4/rGO electrode delivers high discharge capacity of 410.7 mAh g−1, which is distinctly improved than that of pristine Li3VO4 obtained under similar condition (274.1 mAh g−1 after 200 cycles). Moreover, the Li3VO4/rGO electrode also exhibits excellent rate capability, showing high discharge capacity of 249.5 mAh g−1 at a specific current of 1.6 A g−1. The low temperature and atmospheric pressure fabrication approach is easy to scale up, which is advantageous for practical application.