NOVELTY - An apparatus (900) comprises a surface of end-of-life-cells (909), where each cell has corresponding nanostructures disposed between the surface and an electrolyte fluid (906); a vitrifying substance or an altering compound disposed in the cells such that the substance or the compound is separated from the electrolyte fluid by nanostructures; and unit for contacting the electrolyte fluid with the substance or compound in at least a first cell such that, upon contacting the substance or compound, at least a portion of the electrolyte is immobilized or altered.    USE - As a battery (claimed) useful in devices or structures in myriad applications.    ADVANTAGE - The cell-array battery comprises end-of-life cells that can be activated at the end of a battery's life, and thus neutralize the toxic chemicals inside the battery. When the electrolyte contacts the substance between the nanostructures in at least one end-of-life cell, the chemical composition of the electrolyte is changed into a less toxic chemical compound, thus neutralizing the electrolyte. The battery permits greater control over the current and/or voltage, as well as better control over the life of the battery. Specifically, such control is achieved by dividing at least one electrode in the battery into an array of cells, or pixels. By allowing the electrolyte to penetrate only in particular cells in the array, for example by only passing a low voltage over the nanostructures in those cells, the current/voltage produced by the battery can be selected at a particular desired level depending on the application. By progressively activating the cells, a desired voltage/current level and/or battery life can be maintained.    DETAILED DESCRIPTION - An apparatus (900) comprises: a surface having several cells, including end-of-life-cells (909), each cell having corresponding nanostructures disposed between the surface and an electrolyte fluid (906); a vitrifying substance or an altering compound disposed in the end-of-life cells such that the vitrifying substance or the altering compound is separated from the electrolyte fluid by the nanostructures; and unit for contacting the electrolyte fluid with the vitrifying substance or the altering compound in at least a first cell in the several cells such that, upon contacting the vitrifying substance or the altering compound, at least a portion of the electrolyte is immobilized or altered. The unit for contacting comprises unit for decreasing the angle of contact between the electrolyte and the nanostructures such that the electrolyte penetrates the nanostructures. The unit for decreasing comprises unit for applying a voltage to the nanostructures. INDEPENDENT CLAIMS are included for the following:    (1) an apparatus for neutralizing an electrolyte fluid, comprising: a surface having several cells, each cell has corresponding nanostructures disposed between the surface and the electrolyte fluid; a vitrifying substance or an altering compound disposed on the surface; and a voltage generator for applying a voltage to the nanostructures, where, upon the voltage being applied to the nanostructures, the angle of contact between the electrolyte and the nanostructures decreases in a way such that the electrolyte penetrates the nanostructures, thus contacting the vitrifying substance or the altering compound; and    (2) method of altering an electrolyte liquid in a battery, where the battery comprises an electrode comprising a surface having nanostructures disposed on it, where the surface is divided into several end-of-life cells, the method involving: selectively passing a voltage across a portion of the nanostructures in the end-of-life cells in a way such that the electrolyte fluid penetrates the nanostructures and contacts the vitrifying substance or altering compound on the surface.    DESCRIPTION OF DRAWING(S) - The figure shows view of an illustrative array of cells.    Battery (900)    Positive electrode (901)    Electrolyte (906)    Negative electrode (907)    End-of-life cells (909)