The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.
Upraising the O 2p Orbital by Integrating Ni with MoO2 for Accelerating Hydrogen Evolution Kinetics
Abstract
Unique interfacial properties within heterostructures play vital roles in enhancing hydrogen evolution reaction (HER) electrocatalysis. On the basis of the MoO 2 -Ni heterostructure, we hereby propose an upraised atomic orbital promoted catalytic mechanism for accelerating the HER kinetics. A controllable gradient-pyrolysis approach is adopted on molybdates to integrate Ni with MoO 2, possessing numerous phase-separation-induced intimate interfaces. In situ characterizations demonstrate the formation process of MoO 2 -Ni interfaces and excellent compositional stability under alkaline conditions. The optimized MoO 2 -Ni catalyst delivers remarkable Pt-like HER activity and good stability with 50 h operation in 1 M KOH. An enhancement of 3 orders of magnitude on the exchange current density is achieved for MoO 2 -Ni in comparison to the simplex MoO 2 . Further experimental and theoretical analyses verify the existence of a concentrated surface charge at MoO 2 -Ni interfaces. Meanwhile, with the incorporation of Ni into MoO 2, the most active sites dramatically change from Mo to O atoms at MoO 2 -Ni interfaces. The Ni contact upraises the O 2p orbital in MoO 2, thus strengthening the hydrogen adsorption for enhanced HER kinetics.
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Cites
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Self-citationJin, H., Wang, J., Su, D., Wei, Z., Pang, Z., & Wang, Y. (2015) · Journal of the American Chemical Society · doi:10.1021/ja5127165 · Cited by 1,765
An efficient and pH-universal ruthenium-based catalyst for the hydrogen evolution reaction
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Self-citationMetal/Oxide Interface Nanostructures Generated by Surface Segregation for Electrocatalysis
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Self-citationMetal oxide-based materials as an emerging family of hydrogen evolution electrocatalysts
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Self-citationLiu, X., Meng, J., Zhu, J., Huang, M., Wen, B., Guo, R., & Mai, L. (2021) · Advanced Materials · doi:10.1002/adma.202007344 · Cited by 438
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Metadata
- Authors
- Liu, X., Ni, K., Niu, C., Guo, R., Xi, W., Wang, Z., Meng, J., Li, J., Zhu, Y., Wu, P., Li, Q., Luo, J., Wu, X., & Mai, L.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-01-25
- Volume
- 9
- Issue
- 3
- Pages
- 2275-2285
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2913179618
- Cited by
- 216
- References
- 12
- FWCI
- 6.49
- Type
- journal article
- Language
- en
- Open access
- closed
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- Liu, X., Ni, K., Niu, C., Guo, R., Xi, W., Wang, Z., Meng, J., Li, J., Zhu, Y., Wu, P., Li, Q., Luo, J., Wu, X., & Mai, L. (2019). Upraising the O 2p Orbital by Integrating Ni with MoO2 for Accelerating Hydrogen Evolution Kinetics. ACS Catalysis. https://doi.org/10.1021/acscatal.8b04817
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