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This content will become publicly available on February 12, 2019

Title: Porous Carbon-Hosted Atomically Dispersed Iron-Nitrogen Moiety as Enhanced Electrocatalysts for Oxygen Reduction Reaction in a Wide Range of pH

As one of the alternatives to replace precious metal catalysts, transition metal-nitrogen-carbon (M-N-C) electrocatalysts have attracted great research interest due to their low cost and good catalytic activities. Despite nanostructured M-N-C catalysts can achieve good electrochemical performances, they are vulnerable to aggregation and insufficient catalytic sites upon continuous catalytic reaction. Thus, M-N-C’s stability and selectivity have not been comparable to their noble metal counterparts. In this work, metal-organic frameworks (MOFs)-derived porous single-atom electrocatalysts (SAEs) were successfully prepared by simple pyrolysis procedure without any further post-treatment. Combining the X-ray absorption near-edge spectroscopy (XANES) and electrochemical measurements, the SAEs have been identified with superior ORR activity and stability compared with Pt/C catalysts in alkaline condition. More impressively, the SAEs also show excellent ORR electrocatalytic performance in both acid and neutral media. Furthermore, this study of nonprecious catalysts provides new insights on nano-engineering catalytically active sites and porous structures for nonprecious metal ORR catalysis in a wide range of pH.
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  1. Washington State Univ., Pullman, WA (United States)
  2. Washington State Univ., Pullman, WA (United States); College of Chemistry Central China Normal Univ., Wuhan (People's Republic of China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 1613-6810
Grant/Contract Number:
SC0012704; AC05-76RL01830
Accepted Manuscript
Journal Name:
Additional Journal Information:
Journal Volume: 14; Journal Issue: 12; Journal ID: ISSN 1613-6810
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
29 ENERGY PLANNING, POLICY AND ECONOMY; Metal organic frameworks; nonprecious metal nanocatalysts; single-atom catalysts; Fe-N-C electrocatalysts; oxygen reduction reaction
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1420179