The all vanadium redox flow battery, Zn/Ni, PbO_2/Zn、PbO_2/Cu(Cd) and all lead single flow battery systems with great application potential and electrolyte of high concentration are taken as the focus of research. Influence of some inorganic additives and organic additives with various functional groups on the thermal stability and electrochemical performance of electrolyte of vanadium redox flow battery were investigated. The improved electrochemical performance may be ascribed to more active sites provide...