Self-Assembled Manganese Sulfide Nanostructures on Graphene as an Oxygen Reduction Catalyst for Anion Exchange Membrane Fuel Cells

摘要: The development of active, inexpensive, and durable non-precious-metal electrocatalysts to replace high-cost Pt-based catalysts towards the commercialization fuel cell technology is focus in recent years. In this regard, we report a facile one-pot hydrothermal synthesis self-assembled manganese sulfide on graphene layers (MnS/G), recognized as catalyst for efficient oxygen reduction reaction (ORR) an alkaline medium. phase purity surface morphologies are investigated by using X-ray diffraction scanning electron microscopic techniques, respectively. Optimized MnS/G with 50 % Mn exhibited excellent ORR properties onset half-wave potentials 0.83 0.71 V vs. RHE, While evaluating durability, only 90 mV negative shift its potential observed after 5000 repeated cycles, which also ascertained up 48 h operation at constant chronoamperometric technique 28 % degradation current. optimized material utilized cathode fabricating membrane electrode assembly performance evaluation anion exchange cell. A peak power density 12 mW cm−2 realized H2−O2 feeds under ambient temperature pressure; thus, it looks alternative applications.