The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.
Activity Descriptor Identification for Oxygen Reduction on Platinum-Based Bimetallic Nanoparticles: In Situ Observation of the Linear Composition–Strain–Activity Relationship
Open accessAbstract
Despite recent progress in developing active and durable oxygen reduction catalysts with reduced Pt content, lack of elegant bottom-up synthesis procedures with knowledge over the control of atomic arrangement and morphology of the Pt-alloy catalysts still hinders fuel cell commercialization. To follow a less empirical synthesis path for improved Pt-based catalysts, it is essential to correlate catalytic performance to properties that can be easily controlled and measured experimentally. Herein, using Pt-Co alloy nanoparticles (NPs) with varying atomic composition as an example, we show that the atomic distribution of Pt-based bimetallic NPs under operating conditions is strongly dependent on the initial atomic ratio by employing microscopic and in situ spectroscopic techniques. The PtxCo/C NPs with high Co content possess a Co concentration gradient such that Co is concentrated in the core and gradually depletes in the near-surface region, whereas the PtxCo/C NPs with low Co content possess a relatively uniform distribution of Co with low Co population in the near-surface region. Despite their different atomic structure, the oxygen reduction reaction (ORR) activity of PtxCo/C and Pt/C NPs is linearly related to the bulk average Pt-Pt bond length (RPt-Pt). The RPt-Pt is further shown to contract linearly with the increase in Co/Pt composition. These linear correlations together demonstrate that (i) the improved ORR activity of PtxCo/C NPs over pure Pt NPs originates predominantly from the compressive strain and (ii) the RPt-Pt is a valid strain descriptor that bridges the activity and atomic composition of Pt-based bimetallic NPs.
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Cites
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Cited by
Recent Advances in Electrocatalysts for Oxygen Reduction Reaction
Shao, M., Chang, Q., Dodelet, J.-P., & Chenitz, R. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00462 · Cited by 3,903
Strain-controlled electrocatalysis on multimetallic nanomaterials
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Ďurovič, M., Hnát, J., & Bouzek, K. (2021) · Journal of Power Sources · doi:10.1016/j.jpowsour.2021.229708 · Cited by 436
Surface engineering for stable electrocatalysis
Do, V.-H., & Lee, J.-M. (2024) · Chemical Society Reviews · doi:10.1039/d3cs00292f · Cited by 167
Interstitial B-Doping in Pt Lattice to Upgrade Oxygen Electroreduction Performance
Mao, Z., Ding, C., Liu, X., Zhang, Q., Qin, X., Li, H., Yang, F., Li, Q., Zhang, X.-G., Zhang, J., et al. (2022) · ACS Catalysis · doi:10.1021/acscatal.2c01052 · Cited by 62
Metadata
- Authors
- Jia, Q., Liang, W., Bates, M. K., Mani, P., Lee, W., & Mukerjee, S.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-01-12
- Volume
- 9
- Issue
- 1
- Pages
- 387-400
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2320280309
- Cited by
- 183
- References
- 15
- FWCI
- 5.57
- Type
- journal article
- Language
- en
- Open access
- hybrid
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