NOVELTY - The apparatus has a layer that is provided with an open interconnected wall structure of electrically conductive material (541). The open interconnected wall structure is formed with gyroid structure comprising open pores into which an active material (540) for use in generating and/or storing electrical charge is deposited. The layer of electrically conductive material and open interconnected wall structure together forms a charge collector which provides an electrical path from active material for generated and/or stored electrical charge.    USE - Apparatus for improving storage capacity and internal resistance of storage cell such as lithium-ion battery of hand-portable electronic device such as mobile phone and personal digital assistant (PDA) providing audio/text/video communication functions, short message service (SMS)/multimedia message service (MMS)/electronic mailing functions, web-browsing, navigation, TV/program viewing functions, radio broadcast recording/playing, music recording/playing functions e.g. MPEG audio layer-3 (MP3) player, downloading/sending of data functions, image capture function, and gaming functions.    ADVANTAGE - The open interconnected wall structure increases the surface roughness and surface area of the charge collector. Since the active material is deposited on top of the charge collector, the increased roughness improves adhesion of the active material reduces degradation of the electrode. Thus, the additional surface area increases the amount of active material in direct contact with the charge collector. Hence, the storage density and capacity of the cell can be improved and the overall impact on device performance is reduced if some of the active material does become detached.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for making apparatus for improving storage capacity and internal resistance of storage cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the physical degradation of active material of flexible and/or stretchable storage cells.    Electrode (539)    Active material (540)    Electrically conductive material (541)