Crab Shell-Derived SnS<sub>2</sub>/C and FeS<sub>2</sub>/C Carbon Composites as Anodes for High-Performance Sodium-Ion Batteries
Yun Chen, Yue Zhao, Hongbin Liu, Tingli Ma
Abstract
High Resolution Image Download MS PowerPoint Slide The demand for energy storage devices has increased significantly, and the sustainable development of lithium-ion batteries is limited by scarce lithium resources. Therefore, alternative sodium-ion batteries which are rich in resource may become more competitive in the future market. In this work, we synthesized low-cost SnS 2 /C and FeS 2 /C anode materials of sodium-ion batteries which used waste crab shells as biomass carbon precursor. The SnS 2 nanosheet and FeS 2 nanosphere structures are deposited on the crab shell-derived carbon through simple hydrothermal reaction. Due to the coexistence of transition metal dichalcogenides (TMDs) and crab-derived biomass carbon, the anode material has excellent cycle stability and rate performance. SnS 2 /C and FeS 2 /C deliver capacities of 535.4 and 479 mA h g –1 at the current density of 0.1 A g –1, respectively. This study explored an effective and economical strategy to use biomass and TMDs to construct high-performance sodium-ion batteries.