The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.
Boosting the bifunctional oxygen electrocatalytic performance of atomically dispersed Fe site via atomic Ni neighboring
Abstract
Abstract Atomically dispersed metal-nitrogen-carbon complexes on carbon supports have drawn tremendous attention in the electrocatalysis fields. Herein, we managed the synthesis of atomically dispersed binary NixFe100-x-NC (x = 0–100) materials with tunable Ni/Fe ratios and investigated their underneath synergy effects for the enhancement of oxygen reduction (ORR) and oxygen evolution reactions (OER). EXAFS revealed the abundant presence of Ni(N3)-Fe(N3)-Cn moieties in Ni66Fe34-NC sample. XPS fine scans indicated deep synergy of dual-site Ni/Fe that favored more charge localized over Ni/Fe sites. Electrochemical measurments showed that the Ni66Fe34-NC delivered a very high ORR half-wave potential (E1/2) of 0.85 V and a low OER overpotential of 467 mV at ∼10 mA cm−2 (Ej=10). The Fe site with Ni neighboring, as suggested by DFT simulations and in-situ Raman, was the responsible site for both ORR and OER. Furthermore, the Ni66Fe34-NC-assembled Zn-air battery afforded large specific power density and extraordinary cycling stability.
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Cites
Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode
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Metadata
- Authors
- Ma, M., Kumar, A., Wang, D., Wang, Y., Jia, Y., Zhang, Y., Zhang, G., Yan, Z., & Sun, X.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2020-10
- Volume
- 274
- Pages
- 119091
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W3022680903
- Cited by
- 210
- References
- 12
- FWCI
- 5.93
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ma, M., Kumar, A., Wang, D., Wang, Y., Jia, Y., Zhang, Y., Zhang, G., Yan, Z., & Sun, X. (2020). Boosting the bifunctional oxygen electrocatalytic performance of atomically dispersed Fe site via atomic Ni neighboring. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2020.119091
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