Molecular Iron Oxide Clusters Boost the Oxygen Reduction Reaction of Platinum Electrocatalysts at Near-Neutral pH.

ABSTRACT: The oxygen reduction reaction (ORR) is a key energy conversion process, which is critical for the efficient operation of fuel cells and metal-air batteries. Here, we report the significant enhancement of the ORR-performance of commercial platinum-on-carbon electrocatalysts when operated in aqueous electrolyte solutions (pH 5.6), containing the polyoxoanion [Fe₂₈ (μ₃ -O)₈ (L-(-)-tart)₁₆ (CH₃ COO)₂₄ ]^20- . Mechanistic studies provide initial insights into the performance-improving role of the iron oxide cluster during ORR. Technological deployment of the system is demonstrated by incorporation into a direct formate microfluidic fuel cell (DFMFC), where major performance increases are observed when compared with refe

SUBMITTER: Lv JQ 

PROVIDER: S-EPMC9546390 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature