Facile synthesis of mesoporous SnO2 fibers with enhanced lithium ion storage properties

Mesoporous SnO2 fibers have been prepared via precipitation of metal ions on green cotton template with further calcinations. The anode comprised of this novel SnO2 structure exhibites large reversible capacity and exceptional capacity retention ability. The improved electrochemical performance can be attributed to the large surface mesoporous network structure of SnO2 fibers, which can provide fast transport channels for the conductive ions and act as a buffer layer for volume change during lithium ion insertion/extraction.