The present invention relates to a nanosized electrochemical dispersion comprising essentially modified silica sol and at least one additive; also a process of preparing nanosized electrochemical dispersion, wherein the process comprises step of loading at least one additive to metalate modified silica sol to obtain the dispersion; in addition a rechargeable alkaline storage zinc battery comprising nanosized electrochemical dispersion consisting of essentially modified silica sol and at least one additive; further a method of manufacturing a rechargeable alkaline storage zinc battery, wherein the method comprises steps of adding a nanosized electrochemical dispersion consisting essentially modified silica sol and at least one additive into a conventional alkaline storage zinc battery to obtain a rechargeable alkaline storage zinc battery; and further a process to prevent dissolution of zinc in a battery, wherein the process comprises addition of nanosized aqueous electrochemical dispersion comprising essentially modified silica sol and at least one additive to the battery, and preventing the dissolution of zinc electrode in the battery.