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In Search of the Active Site in Nitrogen-Doped Carbon Nanotube Electrodes for the Oxygen Reduction Reaction
Abstract
Nitrogen-doped carbon nanomaterials are known to exhibit good electrocatalytic activity for the oxygen reduction reaction (ORR). However, the structure of the ORR active site and optimum content of nitrogen in the carbon lattice for ORR activity remains unknown. In this study, a series of vertically aligned carbon nanotubes (VA-CNTs) with a surface nitrogen concentration of 0, 4.3, 5.6, 8.4, and 10.7 atom % is prepared by the alumina template technique and characterized with XRD, Raman spectroscopy, SEM, and XPS. Electrocatalytic ORR activity is investigated by rotating disk electrode (RDE) voltammetry. Among them, VA-CNTs with a nitrogen concentration of 8.4 atom % exhibited the best ORR performance. This is ascribed to a greater number of pyridinic-type nitrogen sites. The good performance of less expensive nitrogen-doped CNTs makes the ORR electrodes a viable alternative to platinum for energy conversion device applications.
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Citations
Cites
Venkateswara Rao, C., & Viswanathan, B. (2009) · The Journal of Physical Chemistry C · doi:10.1021/jp9041606 · Cited by 96
Cited by
Metal-Free Catalysts for Oxygen Reduction Reaction
Dai, L., Xue, Y., Qu, L., Choi, H.-J., & Baek, J.-B. (2015) · Chemical Reviews · doi:10.1021/cr5003563 · Cited by 2,380
Nitrogen-doped carbon materials
Inagaki, M., Toyoda, M., Soneda, Y., & Morishita, T. (2018) · Carbon · doi:10.1016/j.carbon.2018.02.024 · Cited by 867
Wu, G., Santandreu, A., Kellogg, W., Gupta, S., Ogoke, O., Zhang, H., Wang, H.-L., & Dai, L. (2016) · Nano Energy · doi:10.1016/j.nanoen.2015.12.032 · Cited by 744
Carbon-based electrocatalysts for advanced energy conversion and storage
Zhang, J., Xia, Z., & Dai, L. (2015) · Science Advances · doi:10.1126/sciadv.1500564 · Cited by 735
Sharifi, T., Hu, G., Jia, X., & Wågberg, T. (2012) · ACS Nano · doi:10.1021/nn302906r · Cited by 593
Metadata
- Authors
- Rao, C. V., Cabrera, C. R., & Ishikawa, Y.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-08-20
- Volume
- 1
- Issue
- 18
- Pages
- 2622-2627
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2093669265
- Cited by
- 635
- References
- 1
- FWCI
- 12.90
- Type
- journal article
- Language
- en
- Open access
- closed
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- Rao, C. V., Cabrera, C. R., & Ishikawa, Y. (2010). In Search of the Active Site in Nitrogen-Doped Carbon Nanotube Electrodes for the Oxygen Reduction Reaction. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz100971v
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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