Ag2Cu(VO3)4/PEDOT:PSS core-shell nanowire for lithium-ion batteries

•SCVO/PEDOT:PSS core-shell nanowires were constructed by a dip-coating treatment.•SCVO/PEDOT:PSS exhibits higher initial Coulombic efficiency and cycling stability.•PEDOT:PSS shell reduces charge transfer resistance and relieves structural strain. Recently, multi-component transition-metal vanadium oxides (MTVOs) have shown great potential as a new class of active materials for lithium-ion batteries (LIBs). Compared with simple vanadium oxides, the presence of multi-component transition-metal elements in MTVOs can greatly improve the capacity and cycling stability. Here, we synthesized Ag2Cu(VO3)4 (SCVO) via a simple hydrothermal method. To further improve the specific capacity and electrical conductivity, SCVO/PEDOT:PSS core-shell nanowires were constructed by a dip-coating approach. Electrochemical measurements revealed that SCVO/PEDOT:PSS nanowires exhibit higher initial Coulombic efficiency and better cycling stability as anode material for LIBs.