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Impact of Loading in RRDE Experiments on Fe–N–C Catalysts: Two- or Four-Electron Oxygen Reduction?
Open accessAbstract
We have investigated the impact of electrocatalyst loading on rotating ring-disk electrode (RRDE) experiments for the oxygen reduction reaction on Fe–N–C catalysts (ORR) in acid medium. In particular, the fraction of produced as a function of catalyst loading was studied. A dramatic increase in release was observed as the catalyst loading was decreased. For the same non-noble metal catalyst (NNMC), the fraction of produced varied between less than and greater than , depending on the catalyst loading. These observations suggest that oxygen reduction occurs stepwise, via , and if the catalyst is sparsely loaded, the produced cannot be efficiently reduced to before it escapes. These studies have important implications for fundamental studies of ORR on NNMCs.
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Gasteiger, H. A., Kocha, S. S., Sompalli, B., & Wagner, F. T. (2005) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2004.06.021 · Cited by 4,876
Cited by
High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt
Wu, G., More, K. L., Johnston, C. M., & Zelenay, P. (2011) · Science · doi:10.1126/science.1200832 · Cited by 3,984
Liang, H.-W., Wei, W., Wu, Z.-S., Feng, X., & Müllen, K. (2013) · Journal of the American Chemical Society · doi:10.1021/ja407552k · Cited by 1,205
Kim, H. W., Ross, M. B., Kornienko, N., Zhang, L., Guo, J., Yang, P., & McCloskey, B. D. (2018) · Nature Catalysis · doi:10.1038/s41929-018-0044-2 · Cited by 1,046
Highly selective oxygen reduction to hydrogen peroxide on transition metal single atom coordination
Jiang, K., Back, S., Akey, A. J., Xia, C., Hu, Y., Liang, W., Schaak, D., Stavitski, E., Nørskov, J. K., Siahrostami, S., et al. (2019) · Nature Communications · doi:10.1038/s41467-019-11992-2 · Cited by 820
Jaouen, F., Herranz, J., Lefèvre, M., Dodelet, J.-P., Kramm, U. I., Herrmann, I., Bogdanoff, P., Maruyama, J., Nagaoka, T., Garsuch, A., et al. (2009) · ACS Applied Materials & Interfaces · doi:10.1021/am900219g · Cited by 704
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Metadata
- Authors
- Bonakdarpour, A., Lefevre, M., Yang, R., Jaouen, F., Dahn, T., Dodelet, J.-P., & Dahn, J. R.
- Venue
- Electrochemical and Solid-State Letters
- Publisher
- The Electrochemical Society
- Published
- 2008
- Volume
- 11
- Issue
- 6
- Pages
- B105
- ISSN
- 1099-0062 (ISSN-L)
- OpenAlex
- W2106005358
- Cited by
- 281
- References
- 1
- FWCI
- 7.54
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Bonakdarpour, A., Lefevre, M., Yang, R., Jaouen, F., Dahn, T., Dodelet, J.-P., & Dahn, J. R. (2008). Impact of Loading in RRDE Experiments on Fe–N–C Catalysts: Two- or Four-Electron Oxygen Reduction? Electrochemical and Solid-State Letters. https://doi.org/10.1149/1.2904768
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