A biocarbon coated Li3V2(PO4)3 (LVP-C) cathode with high electrochemical performance was synthesized by a sol–gel method using recycled tea as both structural template and carbon source.
Olivine LiFePO4 covered flocculent carbon layers wrapped with carbon nanotubes (CNTs) prepared by sol–gel method and calcination is used as the cathode material for aqueous rechargeable lithium-ion batteries (ARLBs).