NOVELTY - The composite material comprises a coating material having particles, and a base material. A surface of the base material contains depressions, which lead to a reduced base material thickness at a location. The depressions are deviations from a smooth, even surface of the base material. Geometric dimensions and/or forms of the particles and the depressions are same such that particles fit geometrically in the individual depressions, in whole or in part or are adherently penetrated through the application of force and/or energy.    USE - The composite material is useful in electro-chemical systems, batteries, fuel cells, electrolysis cells or double layer capacitors (all claimed), and as an electrode including an anode and cathode, where the batteries such as lithium ion batteries, lead-acid batteries, lithium-air batteries, lithium-sulfur batteries, zinc-air batteries, nickel-cadmium batteries, carbon zinc batteries, nickel-metal hydride batteries and alkaline manganese batteries are useful for supplying power to motor vehicles and laptop.    ADVANTAGE - The composite material can be economically manufactured with desired size.    DETAILED DESCRIPTION - The composite material comprises a coating material having particles, and a base material. A surface of the base material contains depressions, which lead to a reduced base material thickness at a location. The depressions are deviations from a smooth, even surface of the base material. Geometric dimensions and/or forms of the particles and the depressions are same such that particles fit geometrically in the individual depressions, in whole or in part or are adherently penetrated through the application of force and/or energy so that adhesion is partially based on mechanical forces between particles and base material. The particles are separated from the base material. A diameter of the particles is 10%, 30% or 50% smaller than a common diameter of the depressions in the surface of the base material. The geometric forms of the particles and the depressions are present in a square, a spherical, a semi-spherical, an elliptical and/or a semi-elliptical form and n-shape, where n is an arbitrary natural number. Mathematical dimensions between corners in the depressions of the surface of the base material are same and/or different from one another, and/or are connected together by any mathematical function. The particles and the depressions form a hook and loop structure in the surface of the base material. The hook structure is characterized in that an inner diameter near the surface the depression is less than a surface-remote region of the same depression. The base material is an electrically conductive current collector of an electrochemical cell, and the electrical or coating material contains an active material. An INDEPENDENT CLAIM is included for a method for producing a composite material.