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Cited by 236

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Atomically Dispersed Mo Supported on Metallic Co9S8 Nanoflakes as an Advanced Noble‐Metal‐Free Bifunctional Water Splitting Catalyst Working in Universal pH Conditions

Wang, Ligang, Duan, Xinxuan, Liu, Xijun, Gu, Jing, Si, Rui, Qiu, Yi, Qiu, Yaming, Shi, Dier, Chen, Fanhong, Sun, Xiaoming, Lin, Jianhua, Sun, Junliang·2020·Advanced Energy Materials
DOI 10.1002/aenm.201903137
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Abstract

Water splitting requires development of cost‐effective multifunctional materials that can catalyze both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) efficiently. Currently, the OER relies on the noble‐metal catalysts; since with other catalysts, its operation environment is greatly limited in alkaline conditions. Herein, an advanced water oxidation catalyst based on metallic Co 9 S 8 decorated with single‐atomic Mo (0.99 wt%) is synthesized (Mo‐Co 9 S 8@C). It exhibits pronounced water oxidization activity in acid, alkali, and neutral media by showing positive onset potentials of 200, 90, and 290 mV, respectively, which manifests the best Co 9 S 8‐based single‐atom Mo catalyst till now. Moreover, it also demonstrates excellent HER performance over a wide pH range. Consequently, the catalyst even outperforms noble metal Pt/IrO 2‐based catalysts for overall water splitting (only requiring 1.68 V in acid, and 1.56 V in alkaline). Impressively, it works under a current density of 10 mA cm−2 with no obvious decay during a 24 h (0.5 m H 2 SO 4) and 72 h (1.0 m KOH) durability experiment. Density functional theory (DFT) simulations reveal that the synergistic effects of atomically dispersed Mo with Co‐containing substrates can efficiently alter the binding energies of adsorbed intermediate species and decrease the overpotentials of the water splitting.

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Metadata

Authors
Wang, L., Duan, X., Liu, X., Gu, J., Si, R., Qiu, Y., Qiu, Y., Shi, D., Chen, F., Sun, X., Lin, J., & Sun, J.
Venue
Advanced Energy Materials
Publisher
Wiley
Published
2019-12-11
Volume
10
Issue
4
ISSN
  • 1614-6832 (ISSN-L)
  • 1614-6840
DOI
10.1002/aenm.201903137
OpenAlex
W2995136515
Cited by
236
References
15
FWCI
6.91
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor)
Funders
  • National Basic Research Program of China (2013CB933402, 2016YFA0301004)
  • National Natural Science Foundation of China (21527803, 21471009, 21621061)

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CoChat. (2026). Citation check: Atomically Dispersed Mo Supported on Metallic Co9S8 Nanoflakes as an Advanced Noble‐Metal‐Free Bifunctional Water Splitting Catalyst Working in Universal pH Conditions. https://app.cochat.ai/papers/10.1002/aenm.201903137
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Wang, L., Duan, X., Liu, X., Gu, J., Si, R., Qiu, Y., Qiu, Y., Shi, D., Chen, F., Sun, X., Lin, J., & Sun, J. (2020). Atomically Dispersed Mo Supported on Metallic Co9S8 Nanoflakes as an Advanced Noble‐Metal‐Free Bifunctional Water Splitting Catalyst Working in Universal pH Conditions. Advanced Energy Materials. https://doi.org/10.1002/aenm.201903137

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