Infrared Operando Study of the Solid-Electrolyte Interphase of Amorphous-Si Electrodes for Li-Ion Batteries: Effects of Methylation and Boron Doping

In lithium-ion batteries, the interest of delivering a high voltage leads to use electrodes working outside the electrochemical stability domain of electrolytes. This is especially the case at negative electrodes. Under such conditions, the stable operation of the battery requires the build-