However, commercially produced PW (synthesized primarily by Altris AB and CATL via an acid decomposition method) is generally combined with an electrolyte based on 1 M NaPF6 dissolved in an organic carbonate mixture. As such, PW is generally operated in a relatively small voltage window between 2.40-3.70 V vs Na + /Na with a moderate average cell voltage of ~3.20 V. Increasing the cell voltage could also increase energy density (Wh), but at the same time put more strain on the electrolyte/electrode stability and trigger unwanted side reactions.