Nanoporous Carbon as Anode Material of High Rate Capability for Lithium Ion Batteries

Abstract A nanoporous carbon was prepared by calcining a mixture of nano‐CaCO3 and phenolic resin followed by an etching process to remove the remained impurities. It was characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and charge–discharge measurement. With a pore‐distribution concentrated around 50 nm, the product presents a BET surface area of 543 m2/g. When used as an anode material for lithium ion battery, the nanoporous carbon exhibits good rate capability and cycling performance.