Photoregenerative I⁻/I₃⁻ couple as a liquid cathode for proton exchange membrane fuel cell.
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ABSTRACT: A photoassisted oxygen reduction reaction (ORR) through I(-)/I3(-) redox couple was investigated for proton exchange membrane (PEM) fuel cell cathode reaction. The I(-)/I3(-)-based liquid cathode was used to replace conventional oxygen cathode, and its discharge product I(-) was regenerated to I3(-) by photocatalytic oxidation with the participation of oxygen. This new and innovative approach may provide a strategy to eliminate the usage of challenging ORR electrocatalysts, resulting in an avenue for developing low-cost and high-efficiency PEM fuel cells.
SUBMITTER: Liu Z
PROVIDER: S-EPMC4210939 | biostudies-other | 2014
REPOSITORIES: biostudies-other
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