A Nano-Rattle SnO2@carbon Composite Anode Material for High-Energy Li-ion Batteries by Melt Diffusion Impregnation

A Nano-Rattle SnO2@carbon Composite Anode Material for High-Energy Li-ion Batteries by Melt Diffusion Impregnation

Blog Article

The huge volume expansion in Sn-based alloy anode materials (up to 360%) leads to a dramatic mechanical stress and breaking of particles, resulting WHEY PROTEIN GRAPE in the loss of conductivity and thereby capacity fading.To overcome this issue, SnO2@C nano-rattle composites based on 2 nanoparticles in and on porous amorphous carbon spheres were synthesized using a silica template and tin melting diffusion method.Such SnO2@C nano-rattle composite electrodes provided two electrochemical processes: a partially reversible process of the SnO2 reduction to metallic Sn at 0.8 V vs.

Li+/Li and a reversible process of alloying/dealloying of LixSny at 0.5 V vs.Li+/Li.Good performance could be achieved by controlling the particle sizes of SnO2 and carbon, the pore size of carbon, and the distribution of SnO2 nanoparticles on the carbon shells.

Finally, M SNEAKERS the areal capacity of SnO2@C prepared by the melt diffusion process was increased due to the higher loading of SnO2 nanoparticles into the hollow carbon spheres, as compared with Sn impregnation by a reducing agent.