TY - JOUR
T1 - Unraveling Oxygen Evolution Reaction on Carbon-Based Electrocatalysts
T2 - Effect of Oxygen Doping on Adsorption of Oxygenated Intermediates
AU - Li, Laiquan
AU - Yang, Hongbin
AU - Miao, Jianwei
AU - Zhang, Liping
AU - Wang, Hsin-Yi
AU - Zeng, Zhiping
AU - Huang, Wei
AU - Dong, Xiaochen
AU - Liu, Bin
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2017/2/10
Y1 - 2017/2/10
N2 - 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. © 2017 American Chemical Society.
AB - 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. © 2017 American Chemical Society.
UR - http://www.scopus.com/inward/record.url?scp=85034090302&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85034090302&origin=recordpage
U2 - 10.1021/acsenergylett.6b00681
DO - 10.1021/acsenergylett.6b00681
M3 - RGC 21 - Publication in refereed journal
SN - 2380-8195
VL - 2
SP - 294
EP - 300
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 2
ER -