The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Electrocatalytic Hydrogen Evolution of Ultrathin Co‐Mo5N6 Heterojunction with Interfacial Electron Redistribution
Abstract
Modulating nitrogen‐rich nitrides with favorable electron structure to enhance hydrogen production activity is challenging due to thermodynamically unfavorable characteristics. Herein, an ultrathin heterojunction of metallic Co and nitrogen‐rich nitride (Co‐Mo 5 N 6) is prepared through the ammonia annealing process as a robust electrocatalyst for hydrogen evolution reaction (HER). Density functional theory simulations and experiments reveal that the obtained Co‐Mo 5 N 6 enables electron redistribution between the nitrogen‐rich phase and Co for more negative H 2 O adsorption energy, decreasing the subsequent energetic barrier of dissociation (0.05 eV) and optimizing H* absorption (Δ GH* = 0.1 eV). The structure is connected by nanosheet (≈1.2 nm) building blocks with abundant interstitial spaces, open and connective channels, and strong capillary forces, which accelerate mass transfer and electrical conductivity. The Co‐Mo 5 N 6 exhibits excellent HER activity with an extremely low overpotential of 19 mV at 10 mA cm−2 and Tafel slope of 29.0 mV dec−1. Notably, the required overpotential is only 280 mV to achieve a high current density of 1000 mA cm−2 which is better than commercial Pt/C. This work not only improves the understanding of the catalytic activity and the electron redistribution of nitrogen‐rich nitrides, but also presents a new strategy to design other nitrogen‐rich metal nitrides (such as W 2 N 3, Ta 5 N 6).
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Cited by
Chatenet, M., Pollet, B. G., Dekel, D. R., Dionigi, F., Deseure, J., Millet, P., Braatz, R. D., Bazant, M. Z., Eikerling, M., Staffell, I., et al. (2022) · Chemical Society Reviews · doi:10.1039/d0cs01079k · Cited by 2,025
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Wang, T., Cao, X., & Jiao, L. (2021) · eScience · doi:10.1016/j.esci.2021.09.002 · Cited by 386
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Metadata
- Authors
- Lin, F., Dong, Z., Yao, Y., Yang, L., Fang, F., & Jiao, L.
- Venue
- Advanced Energy Materials
- Publisher
- Wiley
- Published
- 2020-09-27
- Volume
- 10
- Issue
- 42
- ISSN
- 1614-6832 (ISSN-L)
- 1614-6840
- OpenAlex
- W3089501234
- Cited by
- 211
- References
- 10
- FWCI
- 6.22
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lin, F., Dong, Z., Yao, Y., Yang, L., Fang, F., & Jiao, L. (2020). Electrocatalytic Hydrogen Evolution of Ultrathin Co‐Mo5N6 Heterojunction with Interfacial Electron Redistribution. Advanced Energy Materials. https://doi.org/10.1002/aenm.202002176
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