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RE:An interesting read on silicon

[ScienceFirst]

Sigma-Aldrich is a huge chemical company.

 

Look at fig. 2:

 

"Si Nanoparticles Diameter smaller than 150 nm = No cracking or fracture"

 

Recent Developments in Silicon Anode Materials for High Performance Lithium-Ion Batteries | Sigma-Aldrich

 

Nanostructured Silicon Anode Materials

To address these issues, several strategies have been developed to accommodate the huge volumetric changes. One effective strategy is to reduce the active particle size to the nanometer range, at which point, nanosized particles can accommodate significant stress without cracking.

Summary and Challenges

Silicon is one of the most promising anode materials for lithium-ion batteries due to advantages including its highest known capacity and relatively low working potential. However, the problem of extremely large volumetric change must be overcome before silicon anodes can be utilized in practical lithium batteries. In this micro-review, various silicon anodes and silicon-based composite anodes with improved electrochemical performance have been elucidated, showing two viable solutions to circumvent the Si anode. Further research is still needed to address the practical requirements for Si anodes, including high power density, long life, simple manufacturing, and low cost.