Abstract: The present invention relates to rechargeable electrochemical cells comprising (A) at least one cathode comprising (A1) at least one cathode active material comprising (a) at least one graphitized carbon black and (aa) at least one binder, and optionally at least one solid material through which gas can diffuse or which optionally serves as a carrier for the cathode active material, and B) at least one anode comprising metallic magnesium, metallic aluminum, metallic zinc, metallic sodium or metallic lithium. The present invention further relates to the use of inventive electrochemical cells and to metal-air batteries comprising the latter.

Abstract: Herein are disclosed PGM-free catalysts, made starting from transition metal phthalocyanine complexes, useful for catalytic ORR, and more particularly, alcohol tolerant catalysts as cathode material for ORR in alkaline and acid medium, characterized by low hydrogen peroxide generation and having better performance, stability and activity.