Operando Investigation of Silicon Anodes During Electrochemical Cycling in Li-ion Batteries.

Silicon (Si) is recognized as a promising anode material for next-generation anodes due to its high capacity. However, large volume expansion and active particle pulverization during cycling rapidly deteriorate the battery performance. The relationship between Si anode particle size and particle pulverization, and the structure evolution of Si particles during cycling is not well understood.

Re-evaluation of experimental measurements for the validation of electronic band structure calculations for LiFePO and FePO.

Experimental measurements used to validate previous electronic band structure calculations for olivine LiFePO and its delithiated phase, FePO, have been re-investigated in this study. Experimental band gaps of LiFePO and FePO have been determined to be 6.34 eV and 3.