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Cited by 574

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Mn-Doped RuO2 Nanocrystals as Highly Active Electrocatalysts for Enhanced Oxygen Evolution in Acidic Media

Chen, Shi, Huang, Hao, Jiang, Peng, Yang, Kang, Diao, Jiefeng, Gong, Shipeng, Liu, Shuai, Huang, Minxue, Wang, Hui, Chen, Qianwang·2020·ACS Catalysis

Abstract

Currently, RuO 2 is a benchmark acidic oxygen evolution reaction (OER) catalyst. Nevertheless, its wide applications are always restricted by slow dynamics and limited durability. This paper reports a type of Mn-doped RuO 2 nanocrystals for boosting the OER catalytic performance in acidic media. The catalyst (named Mn-RuO 2 ) is prepared through annealing of Ru-exchanged Mn-based derivative at 300 °C. Such Mn-RuO 2 exhibits excellent acidic OER activity, with an overpotential of 158 mV at 10 mA cm –2 and a stability of 5000 cycles in the presence of sulfuric acid (0.5 mol/L). Both structural characterization and theoretical analysis show that the Mn doping in RuO 2 can tune the d-band center of Ru active sites and lower antibonding surface-adsorbate states, which leads to a decreased free energy of the rate-determining step, ultimately enhancing the intrinsic activity of RuO 2 .

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Crossref · 10.1021/acscatal.9b04922

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Metadata

Authors
Chen, S., Huang, H., Jiang, P., Yang, K., Diao, J., Gong, S., Liu, S., Huang, M., Wang, H., & Chen, Q.
Venue
ACS Catalysis
Published
2019-12-13
Volume
10
Issue
2
Pages
1152-1160
ISSN
2155-5435 (ISSN-L)
OpenAlex
W2996204627
Cited by
574
References
50
FWCI
8.35
Type
journal article
Language
en
Open access
closed

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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.