NOVELTY - Preparation of platinum-free chelate catalytic materials, as intermediate product for the selective electrocatalytic oxygen reduction with a porous, conductive carbon matrix with embedded electro-chemically active centers from a transition metal chelate, comprises: subjecting a powdery transition metal chelate to first low-temperature plasma treatment; fragmenting the transition metal chelate molecules; and cross linking the obtained product in a chemical sequence reaction.    USE - The platinum-free chelate catalyst material is useful as intermediate product for the selective electrocatalytic oxygen reduction with a porous, conductive carbon matrix with embedded electro-chemically active centers from a transition metal chelate (claimed). The platinum-free chelate catalyst material is useful for coating the substrate.    ADVANTAGE - The process provides the platinum-free chelate catalyst material with increased catalytic activity. The process is simple, efficient and economical.    DETAILED DESCRIPTION - Preparation of a platinum-free chelate catalytic materials, as intermediate product for the selective electrocatalytic oxygen reduction with a porous, conductive carbon matrix with embedded electro-chemically active centers from a transition metal chelate, comprises: subjecting a powdery transition metal chelate to first low-temperature plasma treatment, in a plasma reactor with an inert plasma gas, plasma efficiency, plasma gas pressure, plasma initialization and treatment time; fragmenting the transition metal chelate molecules in the plasma fragment; and cross linking the obtained product in a chemical sequence reaction to give a carbon matrix and a chelate basic structure in the obtained transition metal medium. An INDEPENDENT CLAIM is included for a procedure for the electrolytic coating of the platinum-free chelate catalytic materials as end product on a substrate comprising subjecting the transition metal chelate from first low-temperature plasma treatment to a second low-temperature plasma treatment in the plasma reactor with the inert plasma gas, plasma efficiency, plasma gas pressure, plasma initialization and treatment time, where the first and second plasma treatment takes place in one or more alternative plasma reactor with a sputtering target protection while the second plasma treatment is carried out in a separated plasma reactor; and depositing the obtained second platinum-free chelate catalyst materials on the substrate.