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Oxygen Evolution Reaction on La1–xSrxCoO3 Perovskites: A Combined Experimental and Theoretical Study of Their Structural, Electronic, and Electrochemical Properties
Open accessAbstract
The bulk electronic structure, surface composition, conductivity, and electrochemical activity toward the oxygen evolution reaction for the La 1– x Sr x CoO 3 perovskite series (with x = 0, 0.2, 0.4, 0.6, 0.8, 1) are investigated experimentally and theoretically. It is found that Sr substitutions have the effect of straightening the octahedral cage, aligning atoms along the Co–O–Co axis, and increasing the average oxidation state of the Co cations. As a consequence, both the ex situ electronic conductivity as well as the activity toward the oxygen evolution reaction are considerably improved. According to density-functional theory calculations, the alignment of the Co–O–Co bonds and the oxidation of the Co cations enhance the overlap between the occupied O 2p valence bands and the unoccupied Co 3d conduction bands, rationalizing the improvement of the conductivity as a function of the Sr fraction. Additionally, a study of the surface properties as a function of the Sr fraction, carried out by X-ray photoelectron spectroscopy (XPS), provides insight both on surface composition and its effects on the OER activity.
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Cites
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces
Man, I. C., Su, H., Calle‐Vallejo, F., Hansen, H. A., Martínez, J. I., Inoglu, N. G., Kitchin, J., Jaramillo, T. F., Nørskov, J. K., & Rossmeisl, J. (2011) · ChemCatChem · doi:10.1002/cctc.201000397 · Cited by 4,769
Developments and perspectives of oxide-based catalysts for the oxygen evolution reaction
Fabbri, E., Habereder, A., Waltar, K., Kötz, R., & Schmidt, T. J. (2014) · Catal. Sci. Technol. · doi:10.1039/c4cy00669k · Cited by 1,303
Self-citationCharacterization of High‐Surface‐Area Electrocatalysts Using a Rotating Disk Electrode Configuration
Schmidt, T. J., Gasteiger, H. A., Stäb, G. D., Urban, P. M., Kolb, D. M., & Behm, R. J. (1998) · Journal of The Electrochemical Society · doi:10.1149/1.1838642 · Cited by 1,131
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Cited by
Huang, Z.-F., Song, J., Du, Y., Xi, S., Dou, S., Nsanzimana, J. M. V., Wang, C., Xu, Z. J., & Wang, X. (2019) · Nature Energy · doi:10.1038/s41560-019-0355-9 · Cited by 1,858
Wu, T., Sun, S., Song, J., Xi, S., Du, Y., Chen, B., Sasangka, W. A., Liao, H., Gan, C. L., Scherer, G. G., et al. (2019) · Nature Catalysis · doi:10.1038/s41929-019-0325-4 · Cited by 1,050
Raveendran, A., Chandran, M., & Dhanusuraman, R. (2023) · RSC Advances · doi:10.1039/d2ra07642j · Cited by 892
Ďurovič, M., Hnát, J., & Bouzek, K. (2021) · Journal of Power Sources · doi:10.1016/j.jpowsour.2021.229708 · Cited by 436
Rong, C., Dastafkan, K., Wang, Y., & Zhao, C. (2023) · Advanced Materials · doi:10.1002/adma.202211884 · Cited by 361
Metadata
- Authors
- Cheng, X., Fabbri, E., Nachtegaal, M., Castelli, I. E., El Kazzi, M., Haumont, R., Marzari, N., & Schmidt, T. J.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-11-12
- Volume
- 27
- Issue
- 22
- Pages
- 7662-7672
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2229307655
- Cited by
- 326
- References
- 3
- FWCI
- 10.13
- Type
- journal article
- Language
- en
- Open access
- green
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- Cheng, X., Fabbri, E., Nachtegaal, M., Castelli, I. E., El Kazzi, M., Haumont, R., Marzari, N., & Schmidt, T. J. (2015). Oxygen Evolution Reaction on La1–xSrxCoO3 Perovskites: A Combined Experimental and Theoretical Study of Their Structural, Electronic, and Electrochemical Properties. Chemistry of Materials. https://doi.org/10.1021/acs.chemmater.5b03138
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