Platinum dendrites were synthesized with the controlled sizes of 13-53 nm, and their electrocatalytic properties were evaluated for oxygen reduction reaction (ORR). Dendrites showed a superior activity for ORR and better selectivity for the production of H2O, compared to commercial E-tek catalysts. Durability was also tested by estimating the change in electrochemically active surface area (ECSA) after extended periods of oxygen reduction. Dendrites with larger sizes showed improved durability.
Bibliographical noteFunding Information:
This work is supported by New & Renewable Energy R&D program ( 2009T100100606 and 20093020030010 ) under the Ministry of Knowledge Economy of Korea , and the National Research Foundation ( NRF-2009-0092926 ) of Korea Grant funded by the Korean Government (MEST) .
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