Journal article
Engineering Atomic Single Metal-FeN4Cl Sites with Enhanced Oxygen-Reduction Activity for High-Performance Proton Exchange Membrane Fuel Cells
ACS nano, Vol.16(9), pp.15165-15174
09/27/2022
PMID: 36094168
Abstract
Fe-N-C single-atomic metal site catalysts (SACs) have garnered tremendous interest in the oxygen reduction reaction (ORR) to substitute Pt-based catalysts in proton exchange membrane fuel cells. Nowadays, efforts have been devoted to modulating the electronic structure of metal single-atomic sites for enhancing the catalytic activities of Fe- N-C SACs, like doping heteroatoms to modulate the electronic structure of the Fe-N-x active center. However, most strategies use uncontrolled long-range interactions with heteroatoms on the Fe-N-x substrate, and thus the effect may not precisely control near-range coordinated interactions. Herein, the chlorine (Cl) is used to adjust the Fe-N-x active center via a near-range coordinated interaction. The synthesized FeN4Cl SAC likely contains the FeN4Cl active sites in the carbon matrix. The additional Fe-Cl coordination improves the instrinsic ORR activity compared with normal FeNx SAC, evidenced by density functional theory calculations, the measured ORR half-wave potential (E-1/2, 0.818 V), and excellent membrane electrode assembly performance.
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Details
- Title
- Engineering Atomic Single Metal-FeN4Cl Sites with Enhanced Oxygen-Reduction Activity for High-Performance Proton Exchange Membrane Fuel Cells
- Creators
- Shichao Ding - Washington State UniversityJordan Alysia Barr - Washington State UniversityQiurong Shi - University at Buffalo, State University of New YorkYachao Zeng - University at Buffalo, State University of New YorkPeter Tieu - University of California, IrvineZhaoyuan Lyu - Washington State UniversityLingzhe Fang - Northern Illinois UniversityTao Li - Northern Illinois UniversityXiaoqing Pan - University of California, IrvineScott P. Beckman - Washington State UniversityDan Du - Washington State UniversityHongfei Lin - Washington State UniversityJin-Cheng Li - Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USAGang Wu - University at Buffalo, State University of New YorkYuehe Lin - Washington State University
- Publication Details
- ACS nano, Vol.16(9), pp.15165-15174
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Amer Chemical Soc
- Number of pages
- 10
- Grant note
- U.S. DOE, Energy Efficiency and Renewable Energy, Hydrogen and Fuel Cell Technologies Office; United States Department of Energy (DOE) DE-AC02-06CH11357 / U.S. Department of Energy (DOE) , Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) Advanced Photon Source Center for Institutional Research Computing at Washington State University DGE1255832 / National Science Foundation Graduate Research Fellowship; National Science Foundation (NSF) Franceschi Microscopy & Imaging Center of Washington State University
- Identifiers
- 99901227839801842
- Language
- English
- Resource Type
- Journal article