Waste to wealth: SnO2 nanoparticles anchoring jute fiber cellulose carbon substrates as anode materials for high-performance lithium-ion batteries

In this paper, SnO2 nanoparticles were designed and synthesized by the hydrothermal method. It was confined to a jute fiber cellulose carbon (JFCC) framework, which was equivalent to a biomass carbon buffer layer wrapped around SnO2 nanoparticles. The combination of SnO2 nanoparticles and the amorphous carbon buffer layer alleviated the volume expansion effect of SnO2 to a certain extent, shortened the lithium-ion diffusion path, and improved the conductivity. At 0.2C, the discharge specific capacity of the composite (SnO2@JFCC) was finally stabilized at 1298.5 mAh g−1 after 100 cycles. The discharge specific capacity was stabilized at 1090.3 mAh g−1 for 1000 cycles at 2C, which further showed the good synergy between SnO2 nanoparticles and JFCC and exhibited excellent lithium storage performance.