Unraveling oxygen evolution reaction on carbon-based electrocatalysts: effect of oxygen doping on adsorption of oxygenated intermediates

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dc.contributor.authorLi, L.
dc.contributor.authorYang, H.
dc.contributor.authorMiao, J.
dc.contributor.authorZhang, L.
dc.contributor.authorWang, H.-Y.
dc.contributor.authorZeng, Z.
dc.contributor.authorHuang, W.
dc.contributor.authorDong, X.
dc.contributor.authorLiu, B.
dc.date.issued2017
dc.descriptionPublished: January 5, 2017
dc.description.abstractCarbon-based nanomaterials have been widely studied as promising electrocatalysts for energy conversion and storage. Understanding the oxygen evolution and reduction reactions on carbon-based nanomaterials is of critical importance for development of highly active metal-free electrocatalysts. Here, the adsorption of oxygenated intermediates during oxygen evolution reaction (OER) on carbon nanotubes (CNTs) was examined by ex-situ X-ray photoelectron spectroscopy and in situ electrochemical impedance spectroscopy. The results demonstrate that the carbon atoms on CNTs near the C═O functional groups are active for OER. On the basis of this result, we further revealed the origin of the enhanced intermediate adsorption on surface-oxidized CNTs and the relationship between surface groups and apparent activation energy. Our study gained new understanding of OER on oxygen-doped carbon nanomaterials and provided an effective approach for investigating electrocatalysis on heteroatom-doped carbon electrocatalysts.
dc.description.statementofresponsibilityLaiquan Li, Hongbin Yang, Jianwei Miao, Liping Zhang, Hsin-Yi Wang, Zhiping Zeng, Wei Huang, Xiaochen Dong, and Bin Liu
dc.identifier.citationACS Energy Letters, 2017; 2(2):294-300
dc.identifier.doi10.1021/acsenergylett.6b00681
dc.identifier.issn2380-8195
dc.identifier.issn2380-8195
dc.identifier.urihttp://hdl.handle.net/2440/123618
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.grantRG10/16
dc.relation.grantRG111/15
dc.rights© 2017 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acsenergylett.6b00681
dc.titleUnraveling oxygen evolution reaction on carbon-based electrocatalysts: effect of oxygen doping on adsorption of oxygenated intermediates
dc.typeJournal article
pubs.publication-statusPublished

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