DataVXACS Energy LettersPaper
journal article·2021-02-12

Atomically Dispersed Fe–Heteroatom (N, S) Bridge Sites Anchored on Carbon Nanosheets for Promoting Oxygen Reduction Reaction

Mengran Wang, Wenjuan Yang, Xinzhe Li, Yangsen Xu, Lirong Zheng, Chenliang Su, Bin Liu

ACS Energy Letters· Volume 6· Issue 2
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Source abstract

Abstract

Single Fe atom dispersed carbon nanostructures show promising oxygen reduction reaction (ORR) activities for renewable energy applications. Nevertheless, the microenvironment of the single Fe atoms needs to be further engineered to optimize the catalytic performance, which is challenging. In this work, we develop a NaCl-template pyrolysis method to fabricate single Fe atom catalysts with atomically dispersed Fe–heteroatom (N, S) bridge sites anchored on carbon nanosheets. The N and S coordinated Fe atomic sites (FeN3S) are found to induce charge redistribution, lowering the binding strength of oxygenated reaction intermediates and leading to fast reaction kinetics and good oxygen reduction activity. Our work provides an effective method to regulate the microenvironment of single-atom catalysts for optimizing electrocatalytic performance.
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Research context

NanomaterialsCatalysis & surfaces

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

International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology of Ministry of Education, Institute of Microscale Optoeletronics, Shenzhen University, Shenzhen 518060, China

Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore

Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, No. 19 Yuquan Road, Beijing, P.R. China

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

Funding

China Postdoctoral Science Foundation · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Shenzhen Science and Technology Innovation Committee · Guangdong Special Support Program

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