Platinum nanoparticles (NPs) with controllable morphologies were synthesized in aqueous solution utilizing new type of additive and capping agent.This strategy suggests oxysalt can serve as shape modifier for the first time which may control the morphologies of NPs more precisely because of its moderate adsorption on them.The employment of disodium succinate reveals the possibility that small molecules can serve as capping agent leading to avoiding problems cause by bigger traditional reagents such as polyvinylpyrrolidone (PVP).As accepted widely,PVP is difficult to be purified,removed and it can affect the electrochemical performance of the metal NPs.