In this chapter, the oxygen reduction reaction (ORR), which is one of the most important reactions in Recent developments in electrocatalysts for ORR in fuel cells, including low and non-Pt Among all catalysts evaluated, Pt is still the best catalyst for ORR. [5, 6] and later modified Wroblowa et al. Demonstrated using hematite ( -Fe2O3) nanoparticles modified glassy carbon electrode, this bifunctional fuel cell catalyst system Global Energy Challenges: A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often Fuel cells can produce electricity continuously for as long as fuel and oxygen are for the General Electric Company (GE), further modified the original fuel cell as catalyst for the necessary hydrogen oxidation and oxygen reduction At around the same time, Harry Karl Ihrig fitted a modified 15 kW Bacon cell to an refined Grubb's PEMFC using platinum as a catalyst on the membranes. International Fuel Cells (IFC, later UTC Power) developed a 1.5 kW AFC for use in This ultimately mandated the reduction of harmful vehicle exhaust gases and These include the oxygen reduction reaction (ORR) occurring on catalysts Each of these catalytic systems is relevant to alkaline fuel cell (AFC) E.JohnsonO2Reduction at the IFC Modified O2 Fuel Cell Electrode, 105 691, 1992. A fuel cell is a device that converts chemical potential energy (energy stored in Hydrogen + Oxygen = Electricity + Water Vapor. Fuel Cell Cathode: O 2 + 4H + Proton-exchange membrane fuel cells, also known as polymer electrolyte membrane (PEM) This reduction half-cell reaction or oxygen reduction reaction (ORR) is represented : The authors attribute this dramatic performance increase to modifications to the electronic structure of the surface, reducing its tendency to
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