The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Tuning oxygen vacancies in two-dimensional iron-cobalt oxide nanosheets through hydrogenation for enhanced oxygen evolution activity
Abstract
The oxygen evolution reaction (OER) represents the rate-determining step of electrocatalytic water splitting into hydrogen and oxygen. Creating oxygen vacancies and adjusting their density has proven to be an effective strategy to design high-performance OER catalysts. Herein, a hydrogenation method is applied to treat a two-dimensional (2D) iron-cobalt oxide (Fe 1 Co 1 O x -origin), with the purpose of tuning its oxygen vacancy density. Notably, compared with Fe 1 Co 1 O x -origin, the iron-cobalt oxide hydrogenated at 200 °C and 2.0 MPa optimized conditions exhibits a markedly improved OER activity in 1.0 M KOH (with an overpotential η of 225 mV at a current density of 10 mA·cm –2 ) and a rapid reaction kinetics (with a Tafel slope of 36.0 mV·dec –1 ). Moreover, the OER mass activity of the hydrogenated oxide is 1.9 times that of Fe 1 Co 1 O x -origin at an overpotential of 350 mV. The experimental results, combined with density functional theory (DFT) calculations, reveal that the optimal control of oxygen vacancies in 2D Fe 1 Co 1 O x via hydrogenation can improve the electronic conductivity and promote OH – adsorption onto nearby low-coordinated Co 3+ sites, resulting in a significantly enhanced OER activity.
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Enhanced catalytic activity in strained chemically exfoliated WS2 nanosheets for hydrogen evolution
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Homogeneously dispersed multimetal oxygen-evolving catalysts
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Atomic cobalt on nitrogen-doped graphene for hydrogen generation
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The roles of oxygen vacancies in electrocatalytic oxygen evolution reaction
Zhu, K., Shi, F., Zhu, X., & Yang, W. (2020) · Nano Energy · doi:10.1016/j.nanoen.2020.104761 · Cited by 1,018
Defect Chemistry in Heterogeneous Catalysis: Recognition, Understanding, and Utilization
Xie, C., Yan, D., Li, H., Du, S., Chen, W., Wang, Y., Zou, Y., Chen, R., & Wang, S. (2020) · ACS Catalysis · doi:10.1021/acscatal.0c03034 · Cited by 623
Defect engineering in earth-abundant electrocatalysts for CO2 and N2 reduction
Wang, Q., Lei, Y., Wang, D., & Li, Y. (2019) · Energy & Environmental Science · doi:10.1039/c8ee03781g · Cited by 574
Insight into the design of defect electrocatalysts: From electronic structure to adsorption energy
Xie, C., Yan, D., Chen, W., Zou, Y., Chen, R., Zang, S., Wang, Y., Yao, X., & Wang, S. (2019) · Materials Today · doi:10.1016/j.mattod.2019.05.021 · Cited by 490
Self-citationInfluencing electrocatalytic processes through topographically disordered atomic sites
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Metadata
- Authors
- Zhuang, L., Jia, Y., He, T., Du, A., Yan, X., Ge, L., Zhu, Z., & Yao, X.
- Venue
- Nano Research
- Publisher
- Tsinghua University Press
- Published
- 2018-05-22
- Volume
- 11
- Issue
- 6
- Pages
- 3509-3518
- ISSN
- 1998-0000 (ISSN-L)
- 1998-0124
- OpenAlex
- W2791743118
- Cited by
- 221
- References
- 7
- FWCI
- 5.71
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhuang, L., Jia, Y., He, T., Du, A., Yan, X., Ge, L., Zhu, Z., & Yao, X. (2018). Tuning oxygen vacancies in two-dimensional iron-cobalt oxide nanosheets through hydrogenation for enhanced oxygen evolution activity. Nano Research. https://doi.org/10.1007/s12274-018-2050-8
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