Controlled synthesis of MnSn(OH)6/graphene nanocomposites and their electrochemical properties as capacitive materials

► Noval MnSn(OH)6/graphene nano-composites were synthesized. ► Microstructure can be tailored by changing the reaction temperature and time. ► Crystallinity of MnSn(OH)6 nanoparticles impacts capacitive properties as electrode. ► Nano-composites display improved electrochemical performance over MnSn(OH)6 alone. ► Results serve as an example demonstrating the potential for energy storage.