journal article·2017-02-10

Unraveling Oxygen Evolution Reaction on Carbon-Based Electrocatalysts: Effect of Oxygen Doping on Adsorption of Oxygenated Intermediates

Laiquan Li, Hongbin Yang, Jianwei Miao, Liping Zhang, Hsin-Yi Wang, Zhiping Zeng, Wei Huang, Xiaochen Dong, Bin Liu

ACS Energy Letters· Volume 2· Issue 2
Publisher page

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.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China

Funding

Program for New Century Excellent Talents in University · Ministry of Education - Singapore · National Research Foundation Singapore · Nanyang Technological University · Jiangsu Province · Synergetic Innovation Center for Organic Electronics and Information Displays, Nanyang Technological University · Priority Academic Program Development of Jiangsu Higher Education Institutions

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