The study of multi-walled carbon nanotubes with different diameter as anodes for lithium-ion batteries

► The excellent electrochemical performance verifies the feasibility of MWCNTs as a promising candidate for the anode of LIBs. ► The variation of pore structure has a large impact on the electrochemical and energy storage characteristics. ► MWCNTs with a diameter of 40-60 nm display the highest specific capacity and good cyclability.