This report summarizes the challenges and developments related to the cycle stabilityof Si anodes. It describes the two-component material concepts using polymer blendsand the approaches to material optimization for more stable Si anodes. Since the anodebehavior also depends strongly on the Si particle size (and in polymer mixtures nouniform Si particle size is given), the properties of the Si anodes depending on the Siparticle size and the underlying fundamental processes at the solid-electrolyte interfacewere described shortly. Bicomponent silicon-based composites (carbon additives,inorganic nanoparticles and polymers) on the anode behavior were compared by twoproperties: specific capacity and cycle number of the anodes. This article focuses onSi-polymer blends where the polymer can act as a binder or/and as a solid-state elec-trolyte. To help further the understanding the role of polymer we have gatheredtogether useful data from the literature on solubilities, flexibility and hardness for thepolymers generally used. We offer a perspective for polymer hydrogels that willenable a promising material composition for stable Si anodes.