Building better solid‐state batteries with silicon‐based anodes

Abstract Silicon (Si)‐based solid‐state batteries (Si‐SSBs) are attracting tremendous attention because of their high energy density and unprecedented safety, making them become promising candidates for next‐generation storage systems. Nevertheless, the commercialization Si‐SSBs is significantly impeded by enormous challenges including large volume variation, severe interfacial problems, elusive fundamental mechanisms, unsatisfied electrochemical performance. Besides, some unknown processes in Si‐based anode, electrolytes (SSEs), anode/SSE interfaces still needed to be explored, while an in‐depth understanding solid–solid chemistry insufficient Si‐SSBs. This review aims summarize current scientific technological advances insights into tackling promote deployment First, differences between various conventional liquid electrolyte‐dominated lithium‐ion (LIBs) with discussed. Subsequently, mechanical contact model, chemical reaction properties, charge transfer kinetics (mechanical–chemical kinetics) anode three different SSEs (inorganic (oxides) SSEs, organic–inorganic composite inorganic (sulfides) SSEs) systemically reviewed, respectively. Moreover, progress SSE‐based on aspects electrode constitution, three‐dimensional structured electrodes, external stack pressure highlighted, Finally, future research directions prospects development proposed.