The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.
Dynamically Unveiling Metal–Nitrogen Coordination during Thermal Activation to Design High‐Efficient Atomically Dispersed CoN4 Active Sites
Open accessAbstract
We elucidate the structural evolution of CoN 4 sites during thermal activation by developing a zeolitic imidazolate framework (ZIF)‐8‐derived carbon host as an ideal model for Co 2+ ion adsorption. Subsequent in situ X‐ray absorption spectroscopy analysis can dynamically track the conversion from inactive Co−OH and Co−O species into active CoN 4 sites. The critical transition occurs at 700 °C and becomes optimal at 900 °C, generating the highest intrinsic activity and four‐electron selectivity for the oxygen reduction reaction (ORR). DFT calculations elucidate that the ORR is kinetically favored by the thermal‐induced compressive strain of Co−N bonds in CoN 4 active sites formed at 900 °C. Further, we developed a two‐step (i.e., Co ion doping and adsorption) Co‐N‐C catalyst with increased CoN 4 site density and optimized porosity for mass transport, and demonstrated its outstanding fuel cell performance and durability.
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Cites
High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt
Wu, G., More, K. L., Johnston, C. M., & Zelenay, P. (2011) · Science · doi:10.1126/science.1200832 · Cited by 3,984
Self-citationWu, G., Santandreu, A., Kellogg, W., Gupta, S., Ogoke, O., Zhang, H., Wang, H.-L., & Dai, L. (2016) · Nano Energy · doi:10.1016/j.nanoen.2015.12.032 · Cited by 744
Self-citationHigh-performance fuel cell cathodes exclusively containing atomically dispersed iron active sites
Zhang, H., Chung, H. T., Cullen, D. A., Wagner, S., Kramm, U. I., More, K. L., Zelenay, P., & Wu, G. (2019) · Energy & Environmental Science · doi:10.1039/c9ee00877b · Cited by 616
Self-citationPGM‐Free Cathode Catalysts for PEM Fuel Cells: A Mini‐Review on Stability Challenges
Shao, Y., Dodelet, J., Wu, G., & Zelenay, P. (2019) · Advanced Materials · doi:10.1002/adma.201807615 · Cited by 553
Self-citationIntegrating PGM‐Free Catalysts into Catalyst Layers and Proton Exchange Membrane Fuel Cell Devices
Banham, D., Choi, J., Kishimoto, T., & Ye, S. (2019) · Advanced Materials · doi:10.1002/adma.201804846 · Cited by 157
Cited by
Chen, S., Luo, T., Li, X., Chen, K., Fu, J., Liu, K., Cai, C., Wang, Q., Li, H., Chen, Y., et al. (2022) · Journal of the American Chemical Society · doi:10.1021/jacs.2c01194 · Cited by 560
Self-citationUnderstanding the structure-performance relationship of active sites at atomic scale
Li, R., & Wang, D. (2022) · Nano Research · doi:10.1007/s12274-022-4371-x · Cited by 537
Review of Carbon Support Coordination Environments for Single Metal Atom Electrocatalysts (SACS)
Song, W., Xiao, C., Ding, J., Huang, Z., Yang, X., Zhang, T., Mitlin, D., & Hu, W. (2024) · Advanced Materials · doi:10.1002/adma.202301477 · Cited by 373
Metadata
- Authors
- He, Y., Shi, Q., Shan, W., Li, X., Kropf, A. J., Wegener, E. C., Wright, J., Karakalos, S., Su, D., Cullen, D. A., Wang, G., Myers, D. J., & Wu, G.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2021-03-10
- Volume
- 60
- Issue
- 17
- Pages
- 9516-9526
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W3123388851
- Cited by
- 199
- References
- 5
- FWCI
- 6.80
- Type
- journal article
- Language
- en
- Open access
- green
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- The paper
- He, Y., Shi, Q., Shan, W., Li, X., Kropf, A. J., Wegener, E. C., Wright, J., Karakalos, S., Su, D., Cullen, D. A., Wang, G., Myers, D. J., & Wu, G. (2021). Dynamically Unveiling Metal–Nitrogen Coordination during Thermal Activation to Design High‐Efficient Atomically Dispersed CoN4 Active Sites. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202017288
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
