Corn Stalks ‐Derived Carbon‐SnO ₂ Composite as Anodes for Lithium‐Ion Batteries

Abstract

Abstract SnO 2 is known as a promising anode candidate for lithium‐ion batteries (LIBs), but suffers from the low electrical conductivity and severe volume variation during cycling, which restraint its practical applications. To solve these issues, we successfully fabricated the three‐dimensional structure of carbon obtained from corn stalks and SnO 2 composites. The materials exhibit excellent electrochemical performance. After 100 cycles, it shows a reversible capacity of 691 mA h g −1 at a current density of 0.2 C. Excellent cycle performance is due to the unique structure, which has a strong internal chemical bond between the SnO 2 nanoparticles (SnO 2 NPs) and the carbon skeleton, preventing SnO 2 NPs from falling off the 3D network during the cycle. This work may provide a broader vision into synthesising C‐SnO 2 composites for high‐performance anode materials of LIBs.