TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: In the method (M1), the heteroatom-containing organic molecule provides a heteroatom capable of catalyzing an oxygen reduction reaction. The pyrolysis is carried out at 700-1100 degrees C. The second transition metal is in the form of nanoparticles or a colloid accommodated within pores of the MOF. The electrocatalyst is cross-linked as a result of the pyrolysis in step (c1); and is resistant to anion poisoning when used in an oxygen reduction reaction. The steps (a1) and (b1) are carried out in a single reaction vessel. Preferred Electrocatalysts: The electrocatalysts (A1) and (A2) further comprise nanoparticles, where the nanoparticles comprises or consist of a non-oxidated metal (M') surrounded with a layer of metal oxide (M'xOy). Preferred Cathode: The cathodes (C1)-(C3) are resistant to anion poisoning. The cathodes (C1)-(C4) are resistant to poisoning by chloride ion; and are resistant to poisoning by dihydrogen phosphate ion. Preferred Components: The second transition metal is a non-noble transition metal. The non-noble transition metal is selected from iron, cobalt, copper, nickel, and chromium. The first and the second transition metals have oxidation states selected from all known oxidation states for the respective transition metal. The first transition metal is selected from zinc and molybdenum. The salt of each of the first and the second transition metals is selected from acetate, nitrate, sulfate, phosphate, and chloride.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The heteroatom-containing organic molecule comprises at least one heteroatom selected from nitrogen, oxygen, and sulfur. The organic ligand is selected from imidazole, methylimidazole, pyridine, pyridine derivatives, pyrimidine, triazole, tetrazole, napthylene, and napthyridine. The first catalytic precursor is selected from phenanthroline, porphyrin, imidazole, pyridine, pyrimidine, and triazole. The first solvent is selected from dimethylformamide, tetrahydrofuran, diethyl ether, dimethylsulfoxide, and methanol. EXAMPLE - No suitable example given.