Boosting the rate and cycling performance of β-Li V2O5 nanorods for Li ion battery by electrode surface decoration

摘要: Abstract The β-phase lithium vanadium oxide bronze (β-LixV2O5) with high theoretic specific capacity up to 440 mAh g−1 is considered as promising cathode materials, however, their practical application hindered by its poor ionic and electronic conductivity, resulting in unsatisfied cyclic stability rate capability. Herein, we report the surface decoration of β-LixV2O5 using both reduced graphene (rGO) conductor LaPO4, which significantly promotes transfer Li+ diffusion rate, respectively. As a result, rGO/LaPO4/LixV2O5 composite exhibits excellent electrochemical performance terms reversible 275.7 retention 84.1% after 100 cycles at current density 60 mA g−1, acceptable 170.3 400 mA g−1. cycled electrode also analyzed impedance spectroscopy, ex-situ X-ray diffraction scanning electron microscope, providing further insights into improvement performance. Our work provides an effective approach boost properties vanadates for ion batteries.