화학공학소재연구정보센터
Journal of Power Sources, Vol.301, 41-46, 2016
High capacity and superlong cycle life of Li3VO4/N-C hybrids as anode for high performance Li-ion batteries
High capacity and superlong cycle life of Li3VO4 have been actualized via carbon hybridization and N doping. The Li3VO4/N doped C (Li3VO4/N-C) that fabricated via an in situ carbonization method based on an intermedial solution phase delivers initial discharge and charge capacities of 686 and 540 mAh g(-1) at a specific current of 0.15 A g(-1), which maintain of 538 and 536 mAh g(-1) after 800 cycles, showing excellent cycle stability. Meanwhile, the Li3VO4/N-C exhibits superior rate performance and long life performance. After 150 cycles at various specific currents from 0.1 to 2.0 A g(-1), the discharge and charge capacities can restore 100% when reverting the specific current to 0.1 A g(-1). After 1100 cycles at a specific current of 2.0 A g(-1), the discharge and charge capacities can maintain of 340 and 337 mAh g(-1), showing no capacity attenuation in cycling. (C) 2015 Elsevier B.V. All rights reserved.