The problem stems from oxygen reduction in deep water, a phenomenon that some scientists are observing in oceans worldwide, and that may be related to climate change. (scientificamerican.com)
«One - Step Synthesis of Cobalt And Nitrogen Co-Doped Carbon Nanotubes and Their Catalytic Activity for Oxygen Reduction Reaction.» (pnnl.gov)
«Metal - Organic Framework Derived Hierarchically Porous Nitrogen - Doped Carbon Nanostructures as Novel Electrocatalyst for Oxygen Reduction Reaction.» (pnnl.gov)