NOVELTY - An apparatus (10) comprises reservoir having first compartment to contain ion solution of first concentration and second compartment to contain ion solution of second concentration; bipolar membrane positioned to separate the first compartment from the second compartment and comprising monopolar cation and monopolar anion exchange membrane joined together with intermediate transitional phase layer in between; fluid inlet; fluid outlet; first electrode positioned within the first compartment; and second electrode positioned within the second compartment.    USE - For the generation of electric current (claimed).    ADVANTAGE - The electric current generated by the apparatus is effective in supplying the electric current necessary for the electrodialysis of the water to provide hydrogen and hydroxide ions. The apparatus provides novel dialytic power generator utilizing salinity gradients and novel diffusion gradient fuel cell; is the simplification of the device through the effective use of a single bipolar membrane or other porous separator capable of ion transport; is the ability of the diffusion gradient fuel cell provides essentially continuous supply of electric current by replenishing and discharging the ionic solutions of the device; is the ability of the diffusion gradient fuel cell provides supply of electric current that is effective for the dissociation of water molecules into hydrogen and hydroxide ions.    DETAILED DESCRIPTION - An apparatus (10) comprises reservoir having first compartment to contain ion solution of first concentration and second compartment to contain ion solution of second concentration, where the first concentration is different than the second concentration; bipolar membrane positioned to separate the first compartment from the second compartment, the bipolar membrane comprising monopolar cation exchange membrane and monopolar anion exchange membrane joined together with intermediate transitional phase layer in between, the bipolar membrane positioned such that the anion exchange membrane is adjacent to the first compartment and separated from the second compartment by the intermediate transitional phase layer and the cation exchange membrane and the cation exchange membrane is adjacent to the second compartment and separated from the first compartment by the intermediate transitional phase layer and the anion exchange membrane; a fluid inlet in fluid communication with the first compartment of the reservoir; a fluid outlet in fluid communication with the first compartment of the reservoir; a first electrode positioned within the first compartment; and second electrode positioned within the second compartment. The apparatus further comprises pump in fluid communication with the fluid inlet of the first compartment. An INDEPENDENT CLAIM is included for generating electric current, involving providing apparatus comprising reservoir having first compartment and second compartment, the first compartment separated from the second compartment by bipolar membrane, the bipolar membrane comprising monopolar cation exchange membrane and monopolar anion exchange membrane joined together with intermediate transitional phase layer in between, the bipolar membrane positioned such that the anion exchange membrane is adjacent to the first compartment and separated from the second compartment by the intermediate transitional phase layer and the cation exchange membrane and the cation exchange membrane is adjacent to the second compartment and separated from the first compartment by the intermediate transitional phase layer and the anion exchange membrane, a first electrode positioned within the first compartment and second electrode positioned within the second compartment; introducing ion solution of first concentration into the first compartment and introducing ion solution of second concentration into the second compartment; and generating electric current between the first electrode and the second electrode.    DESCRIPTION OF DRAWING(S) - The figure shows illustrative view of conductivity system.    Conductivity system (10)    Flow impeller (11)    Bipolar concentration cell (12)    Discharge reservoir (13)