SnO2 Nanoparticles Embedded Biochar as Anode Material in Lithium Ion Batteries
Abstract
To meet two goals of low cost and sustainability for battery fabrication, a SnO 2 nanoparticles embedded biochar (biochar/SnO 2 ) composite was fabricated using agriculture waste via a facile two-step hydrothermal and sintering method. The as prepared biochar/SnO 2 showed a uniform SnO 2 distribution in biochar. As a result, a high specific capacity of 577 mAh/g was obtained after 100 cycles, which is much higher than pristine SnO 2 nanoparticles and biochar. The significant improvement of specific capacity and cycle stability could be attributed to the nature hierarchical porous structure from biochar, which provided a high surface area and a volume buffer for SnO 2 during battery operation.
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