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Performance Enhancement of Nanosilicon Anodes via Boron Doping B-doping lowers the expansion of the silicon nanoparticle and improves its electronic conductivity. Surface B-dipoles coordinate with Li2CO3 to create a physical barrier against electrolyte improving passivation.
SILICON:BORON PARTICLE MORPHOLOGY AND DISTRIBUTION
CYCLING CAPACITY RETENTION VS B-CONTENT
Boron doped nanosilicon coated with lithium carbonate improves cycle and calendar lifetimes of silicon through enhanced mechanical stability as well as unique chemical stability afforded by B-dipole formation at particle surface.
Source: P. R. Adhikari, G. F. Pach, J. Quinn et al.
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