Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/123618
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Type: | Journal article |
Title: | Unraveling oxygen evolution reaction on carbon-based electrocatalysts: effect of oxygen doping on adsorption of oxygenated intermediates |
Author: | Li, L. Yang, H. Miao, J. Zhang, L. Wang, H.-Y. Zeng, Z. Huang, W. Dong, X. Liu, B. |
Citation: | ACS Energy Letters, 2017; 2(2):294-300 |
Publisher: | American Chemical Society |
Issue Date: | 2017 |
ISSN: | 2380-8195 2380-8195 |
Statement of Responsibility: | Laiquan Li, Hongbin Yang, Jianwei Miao, Liping Zhang, Hsin-Yi Wang, Zhiping Zeng, Wei Huang, Xiaochen Dong, and Bin Liu |
Abstract: | Carbon-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. |
Description: | Published: January 5, 2017 |
Rights: | © 2017 American Chemical Society |
DOI: | 10.1021/acsenergylett.6b00681 |
Grant ID: | RG10/16 RG111/15 |
Published version: | http://dx.doi.org/10.1021/acsenergylett.6b00681 |
Appears in Collections: | Aurora harvest 3 Chemical Engineering publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_123618.pdf | Accepted version | 2.92 MB | Adobe PDF | View/Open |
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