A facile route for PbO@C nanocomposites: An electrode candidate for lead-acid batteries with enhanced capacitance

► PbO@C nanocomposites were prepared by pyrolyzing Pb(NO3)2 impregnated starch gel. ► Monodispersed PbO nanoparticles were homogeneously embedded in the carbon matrix. ► PbO@C nanocomposites prepared exhibited the capacity of 205 mA h g−1. ► Products prepared were promising electrode candidates for lead acid batteries.