Month: October 2018

Oxygen Reduction Reaction

December 17, 2018

In the operation of a hydrogen fuel cell, one of the two principle reactions that takes place is the oxygen reduction reaction (ORR). It is the reaction by which oxygen gains electrons. It is a more complex reaction than the hydrogen oxidation reaction (HOR), with slower kinetics, making it the bottleneck in the overall redox …

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A Brief Introduction to Alkaline Fuel Cells

December 17, 2018

An electrochemical cell converts chemical energy into electrical energy (or vice versa). In the case where electrical energy is generated (Galvanic cell), it is driven by a pair of spontaneous reduction-oxidation (redox) reactions. These reactions take place at the two electrodes, which are in contact with an electrolyte, forming two half-cells. An electrolyte is essentially …

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