The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Metallic Single‐Unit‐Cell Orthorhombic Cobalt Diselenide Atomic Layers: Robust Water‐Electrolysis Catalysts
Abstract
The bottleneck in water electrolysis lies in the kinetically sluggish oxygen evolution reaction (OER). Herein, conceptually new metallic non‐metal atomic layers are proposed to overcome this drawback. Metallic single‐unit‐cell CoSe 2 sheets with an orthorhombic phase are synthesized by thermally exfoliating a lamellar CoSe 2‐DETA hybrid. The metallic character of orthorhombic CoSe 2 atomic layers, verified by DFT calculations and temperature‐dependent resistivities, allows fast oxygen evolution kinetics with a lowered overpotential of 0.27 V. The single‐unit‐cell thickness means 66.7 % of the Co 2+ ions are exposed on the surface and serve as the catalytically active sites. The lowered Co 2+ coordination number down to 1.3 and 2.6, gives a lower Tafel slope of 64 mV dec−1 and higher turnover frequency of 745 h−1. Thus, the single‐unit‐cell CoSe 2 sheets have around 2 and 4.5 times higher catalytic activity compared with the lamellar CoSe 2‐DETA hybrid and bulk CoSe 2.
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Citations
Cites
Kong, D., Wang, H., Lu, Z., & Cui, Y. (2014) · Journal of the American Chemical Society · doi:10.1021/ja501497n · Cited by 1,392
Low Overpotential in Vacancy-Rich Ultrathin CoSe2 Nanosheets for Water Oxidation
Liu, Y., Cheng, H., Lyu, M., Fan, S., Liu, Q., Zhang, W., Zhi, Y., Wang, C., Xiao, C., Wei, S., et al. (2014) · Journal of the American Chemical Society · doi:10.1021/ja5085157 · Cited by 1,094
Self-citation
Cited by
Solar‐to‐Hydrogen Energy Conversion Based on Water Splitting
Qi, J., Zhang, W., & Cao, R. (2018) · Advanced Energy Materials · doi:10.1002/aenm.201701620 · Cited by 649
Noble‐Metal‐Free Electrocatalysts for Oxygen Evolution
Lyu, F., Wang, Q., Choi, S. M., & Yin, Y. (2019) · Small · doi:10.1002/smll.201804201 · Cited by 533
Fang, G., Wang, Q., Zhou, J., Lei, Y., Chen, Z., Wang, Z., Pan, A., & Liang, S. (2019) · ACS Nano · doi:10.1021/acsnano.9b00816 · Cited by 507
Li, X., Wei, J., Li, Q., Zheng, S., Xu, Y., Du, P., Chen, C., Zhao, J., Xue, H., Xu, Q., et al. (2018) · Advanced Functional Materials · doi:10.1002/adfm.201800886 · Cited by 417
Chen, P., Xu, K., Tao, S., Zhou, T., Tong, Y., Ding, H., Zhang, L., Chu, W., Wu, C., & Xie, Y. (2016) · Advanced Materials · doi:10.1002/adma.201601663 · Cited by 353
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Metadata
- Authors
- Liang, L., Cheng, H., Lei, F., Han, J., Gao, S., Wang, C., Sun, Y., Qamar, S., Wei, S., & Xie, Y.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-07-29
- Volume
- 54
- Issue
- 41
- Pages
- 12004-12008
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2117520826
- Cited by
- 181
- References
- 2
- FWCI
- 8.31
- Type
- journal article
- Language
- en
- Open access
- closed
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- Liang, L., Cheng, H., Lei, F., Han, J., Gao, S., Wang, C., Sun, Y., Qamar, S., Wei, S., & Xie, Y. (2015). Metallic Single‐Unit‐Cell Orthorhombic Cobalt Diselenide Atomic Layers: Robust Water‐Electrolysis Catalysts. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201505245
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