What question did this study set out to answer?

To synthesize an overhang-eave carbon cage architecture hosting single-atom iron sites that optimizes reactant mass transport and active-site accessibility for the oxygen reduction reaction.

March 10, 2020Angewandte Chemie International Edition

Single‐Atom Iron Catalysts on Overhang‐Eave Carbon Cages for High‐Performance Oxygen Reduction Reaction

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Authors

CHChun‐Chao HouOcean University of China LZLianli ZouJiangsu University LSLiming SunBeijing University of Chemical Technology

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Implication

Experimental study demonstrates superior oxygen reduction reaction activity in acidic and alkaline electrolytes, highlighting morphology engineering for efficient single-atom catalysis.

Key Points

To synthesize an overhang-eave carbon cage architecture hosting single-atom iron sites that optimizes reactant mass transport and active-site accessibility for the oxygen reduction reaction.
Fabricated overhang-eave carbon cage structures embedded with isolated single-atom iron sites via a silica-mediated, metal-organic framework (MOF)-templated synthesis.
Assessed electrocatalytic oxygen reduction reaction (ORR) activity across both alkaline and acidic electrolytes, comparing results directly against commercial platinum-carbon (Pt/C) benchmarks.
Achieved superior ORR electrocatalytic activity in both acidic and alkaline electrolytes, outperforming most reported precious-metal-free catalysts and matching commercial Pt/C benchmarks.
Identified that an edge-rich architecture with increased three-phase boundaries enhanced mass transport of reactants directly to accessible single-atom iron sites, substantially raising active-site utilization.

Cite This Study

Hou et al. (2020) studied this question.

synapsesocial.com/papers/6a75cc5149a8cdd61fb1df44 https://doi.org/10.1002/anie.202002665

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Implication

Experimental study demonstrates superior oxygen reduction reaction activity in acidic and alkaline electrolytes, highlighting morphology engineering for efficient single-atom catalysis.

Single‐Atom Iron Catalysts on Overhang‐Eave Carbon Cages for High‐Performance Oxygen Reduction Reaction

Discussion

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Implication

Key Points

Cite This Study

Single‐Atom Iron Catalysts on Overhang‐Eave Carbon Cages for High‐Performance Oxygen Reduction Reaction

Discussion

Member takes

Implication

Key Points

Cite This Study

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