What question did this study set out to answer?

Synthesize highly durable and active intermetallic ordered face-centered tetragonal PtFe nanoparticles protected by an ultrathin nitrogen-doped carbon shell for the oxygen reduction reaction.

December 3, 2015Journal of the American Chemical Society

Highly Durable and Active PtFe Nanocatalyst for Electrochemical Oxygen Reduction Reaction

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Authors

DCDong Young ChungArgonne National Laboratory SJSamuel Woojoo JunLawrence Berkeley National Laboratory GYGabin YoonSamsung (South Korea)

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Implication

Experimental study demonstrates durable high-activity platinum-iron nanocatalysts in fuel cell assemblies, suggesting a scalable pathway toward commercial fuel cell technology.

Key Points

Synthesize highly durable and active intermetallic ordered face-centered tetragonal PtFe nanoparticles protected by an ultrathin nitrogen-doped carbon shell for the oxygen reduction reaction.
Synthesized ordered fct-PtFe nanoparticles via thermal annealing of polydopamine-coated precursor nanoparticles to form an in situ protective carbon shell (<1 nm thick).
Characterized structural phase stability and electronic interactions using in situ XANES, EDS, and first-principles calculations.
Assessed electrocatalytic performance, mass and specific activity, and long-term durability in a membrane electrode assembly over 100 hours of continuous operation.
The ordered fct-PtFe nanocatalyst achieved 11.4 times higher mass activity and 10.5 times higher specific activity than commercial Pt/C catalysts.
Membrane electrode assembly testing demonstrated 100 hours of continuous operation without significant loss in catalytic activity.
The sub-nanometer nitrogen-doped carbon shell and ordered fct phase prevented nanoparticle coalescence, detachment, and dissolution under operating conditions.

Cite This Study

Chung et al. (2015) studied this question.

synapsesocial.com/papers/69e24872398fe97010ad3ecf https://doi.org/10.1021/jacs.5b09653

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Implication

Experimental study demonstrates durable high-activity platinum-iron nanocatalysts in fuel cell assemblies, suggesting a scalable pathway toward commercial fuel cell technology.

Highly Durable and Active PtFe Nanocatalyst for Electrochemical Oxygen Reduction Reaction

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Key Points

Cite This Study

Highly Durable and Active PtFe Nanocatalyst for Electrochemical Oxygen Reduction Reaction

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Implication

Key Points

Cite This Study

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