The paper presents the improvement of the recycling process of precious metals, rare earth metals and nickel by using of magnetic-electrostatic separation, which aims to improve the performance of the industrial waste processing chain, primarily by obtaining more valuable products dedicated to molten carbonate fuel cells. The using of electronic scrap based additives can reduce the manufacture cost of molten carbonate fuel cells. Two various fractions of the separated electronic scrap were investigated as the additives to the cathode layers of Molten Carbonate Fuel Cell (MCFC). The experimental results were obtain in the single cell investigation of the size of 25 cm2 fed by hydrogen and a mixture of air and carbon dioxide. The performances were tested in two various fuel flows (indicated as reference and maximum flows) as well as various temperatures. The differences between the additives mainly based on the way of electrostatic separation (by positive or negative electrostatic field used). Prior to the application to the fuel cell layers, the additives were milled one more time to meet the fuel cell layers manufacturing requirements.