The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.
Ordered mesoporous Co3O4 spinels as stable, bifunctional, noble metal-free oxygen electrocatalysts
Abstract
We report the use of noble metal-free ordered mesoporous Co3O4 spinels (meso-Co3O4), templated from KIT-6 mesoporous silica, as highly active and stable bifunctional electrocatalysts for both oxygen evolution and reduction reactions (OER and ORR, respectively). The meso-Co3O4 nanostructures showed high activity for OER in an alkaline medium (0.1 M KOH), which makes them comparable to the most active Ir/C catalyst and better than Co3O4 nanoparticles (NPs) and the Pt/C catalyst. Furthermore, meso-Co3O4 exhibited enhanced stability, compared to Co3O4 NPs. The enhanced activity and stability of meso-Co3O4 over Co3O4 NPs could be attributed to its high surface area and structural stability of the gyroid network structure in the meso-Co3O4 catalysts. The meso-Co3O4 nanostructures also showed promising activity for ORR and exhibited a methanol-tolerance superior to the Pt/C catalyst. The total overpotential of meso-Co3O4 for OER (at 10 mA cm−2) and ORR (at −3 mA cm−2) was 1.034 V, which is on a par with noble metal-based catalysts. This work demonstrates that directing metal oxides into mesostructures is a promising means of preparing highly active, stable, bifunctional oxygen electrocatalysts that can potentially replace expensive noble metal-based catalysts. This design strategy can be extended to other reactions relevant to energy conversion and storage applications.
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Yuan, C.-Z., Jiang, Y.-F., Wang, Z., Xie, X., Yang, Z.-K., Yousaf, A. B., & Xu, A.-W. (2016) · Journal of Materials Chemistry A · doi:10.1039/c6ta01929c · Cited by 258
Metadata
- Authors
- Sa, Y. J., Kwon, K., Cheon, J. Y., Kleitz, F., & Joo, S. H.
- Venue
- Journal of Materials Chemistry A
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2013
- Volume
- 1
- Issue
- 34
- Pages
- 9992
- ISSN
- 2050-7488 (ISSN-L)
- 2050-7496
- OpenAlex
- W2113719840
- Cited by
- 300
- References
- 47
- FWCI
- 10.70
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sa, Y. J., Kwon, K., Cheon, J. Y., Kleitz, F., & Joo, S. H. (2013). Ordered mesoporous Co3O4 spinels as stable, bifunctional, noble metal-free oxygen electrocatalysts. Journal of Materials Chemistry A. https://doi.org/10.1039/c3ta11917c
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