An effective route for manufacturing a mushroom-derived carbon/SnO2/C functional composite

Abstract

Biomass materials have attracted much attention among functional composites, due to the unique bio-mesopore structure as well as the excellent environmentally friendly and electrochemical properties. Therefore, we have developed an effective route for manufacturing a mushroom-derived carbon/SnO₂/C functional composite (MC/SnO₂/C-FC). The experimental results show that MC inherited a bio-mesoporous structure, which makes it a good selection as a matrix. As an anode material, MC/SnO₂/C-FC reveals a reversible capacity of 882 mA h g⁻¹ at 100 mA g⁻¹ after 200 cycles, nearly 3.37 times as good as MC (∼262 mA h g⁻¹). Meanwhile, the value of reversible capacity keeps increasing. Even at a high current density of 2000 mA g⁻¹, the discharge capacity of MC/SnO₂/C-FC can reach 316 mA h g⁻¹. Moreover, a polymer electrolyte has been also prepared to improve the safety performance, showing a high reversible capacity of 569.5 mA h g⁻¹ after 200 cycles.