In Situ Microwave Synthesis of SnO2‐Porous Biomass Carbon as Anode Materials for Lithium‐Ion Batteries

Using absorbent cotton fiber as raw material, the porous biomass carbon (PC) structure is obtained by the Mg 2+ template method. Then, SnO 2 particles are loaded on the surface and internal pores by microwave treatment to obtain a composite material as anode material for lithium ion batteries, which releases a stable capacity of 508 mAh g −1 after 300 cycles at a current density of 300 mA g −1 . The PC structure not only offers a large specific surface area and active sites, but also buffers the expansion and agglomeration of the SnO 2 particles during the deintercalation of lithium ions.