Confined Ultrasmall SnO2 Particles in Micro/Mesoporous Carbon as an Extremely Long Cycle‐Life Anode Material for Li‐Ion Batteries

Nanoconfinement of ultrasmall SnO2 particles in mesoporous carbon with suitable pore size is demonstrated as an efficient method for creating extremely long cycle-life anode battery materials. Exceptional rate capability, high Coulombic efficiency, and excellent cyclic reversibility are shown. The high capacity at high current rate and long cycling makes this composite a promising anode material for Li-ion batteries. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.