Self-Supported Fe-N-C Electrocatalyst via Pyrolysis of EDTAFeNa Adsorbed on SBA-15 for the Oxygen Reduction Reaction

Xiang Hui Yan; Ziwei Meng; P. Prabhu; Hao Xu; Tong Xue; Guoli Fang; Jong Min Lee

doi:10.1021/acs.iecr.9b06500

Self-Supported Fe-N-C Electrocatalyst via Pyrolysis of EDTAFeNa Adsorbed on SBA-15 for the Oxygen Reduction Reaction

Xiang Hui Yan^*, Ziwei Meng, P. Prabhu, Hao Xu, Tong Xue, Guoli Fang, Jong Min Lee

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Self-supported Fe-N-C materials, without a carbon support and iron salt, were prepared via pyrolysis of a sole sodium ferric EDTA (EDTAFeNa) precursor containing C, N, and Fe atoms infused into hard template SBA-15, followed by base and acid etching and final heat treatment. The resultant EDTAFeNa-AL-HT2(SBA-15) demonstrated a four-electron pathway for the oxygen reduction reaction (ORR) in 0.1 M KOH with onset (E_onset) and half-wave (E_1/2) potentials of 0.96 and 0.83 V versus RHE, respectively, closely matching those of benchmark Pt/C catalysts. The joint utilization of SBA-15 and etching endowed the self-supported Fe-N-C catalyst with high graphitization, moderate nitrogen doping, large surface area, hierarchical mesopores, and noncrystalline active Fe species with increased exposure over abundant pores, which synergistically enhanced ORR catalysis, giving rise to remarkable activity and selectivity while excluding contributions of crystalline Fe entities.

Original language	English
Pages (from-to)	3016-3023
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	59
Issue number	7
DOIs	https://doi.org/10.1021/acs.iecr.9b06500
Publication status	Published - Feb 19 2020
Externally published	Yes

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Publisher Copyright:
© 2020 American Chemical Society.

ASJC Scopus Subject Areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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title = "Self-Supported Fe-N-C Electrocatalyst via Pyrolysis of EDTAFeNa Adsorbed on SBA-15 for the Oxygen Reduction Reaction",

abstract = "Self-supported Fe-N-C materials, without a carbon support and iron salt, were prepared via pyrolysis of a sole sodium ferric EDTA (EDTAFeNa) precursor containing C, N, and Fe atoms infused into hard template SBA-15, followed by base and acid etching and final heat treatment. The resultant EDTAFeNa-AL-HT2(SBA-15) demonstrated a four-electron pathway for the oxygen reduction reaction (ORR) in 0.1 M KOH with onset (Eonset) and half-wave (E1/2) potentials of 0.96 and 0.83 V versus RHE, respectively, closely matching those of benchmark Pt/C catalysts. The joint utilization of SBA-15 and etching endowed the self-supported Fe-N-C catalyst with high graphitization, moderate nitrogen doping, large surface area, hierarchical mesopores, and noncrystalline active Fe species with increased exposure over abundant pores, which synergistically enhanced ORR catalysis, giving rise to remarkable activity and selectivity while excluding contributions of crystalline Fe entities.",

author = "Yan, \{Xiang Hui\} and Ziwei Meng and P. Prabhu and Hao Xu and Tong Xue and Guoli Fang and Lee, \{Jong Min\}",

note = "Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

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doi = "10.1021/acs.iecr.9b06500",

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T1 - Self-Supported Fe-N-C Electrocatalyst via Pyrolysis of EDTAFeNa Adsorbed on SBA-15 for the Oxygen Reduction Reaction

AU - Yan, Xiang Hui

AU - Meng, Ziwei

AU - Prabhu, P.

AU - Xu, Hao

AU - Xue, Tong

AU - Fang, Guoli

AU - Lee, Jong Min

PY - 2020/2/19

Y1 - 2020/2/19

N2 - Self-supported Fe-N-C materials, without a carbon support and iron salt, were prepared via pyrolysis of a sole sodium ferric EDTA (EDTAFeNa) precursor containing C, N, and Fe atoms infused into hard template SBA-15, followed by base and acid etching and final heat treatment. The resultant EDTAFeNa-AL-HT2(SBA-15) demonstrated a four-electron pathway for the oxygen reduction reaction (ORR) in 0.1 M KOH with onset (Eonset) and half-wave (E1/2) potentials of 0.96 and 0.83 V versus RHE, respectively, closely matching those of benchmark Pt/C catalysts. The joint utilization of SBA-15 and etching endowed the self-supported Fe-N-C catalyst with high graphitization, moderate nitrogen doping, large surface area, hierarchical mesopores, and noncrystalline active Fe species with increased exposure over abundant pores, which synergistically enhanced ORR catalysis, giving rise to remarkable activity and selectivity while excluding contributions of crystalline Fe entities.

AB - Self-supported Fe-N-C materials, without a carbon support and iron salt, were prepared via pyrolysis of a sole sodium ferric EDTA (EDTAFeNa) precursor containing C, N, and Fe atoms infused into hard template SBA-15, followed by base and acid etching and final heat treatment. The resultant EDTAFeNa-AL-HT2(SBA-15) demonstrated a four-electron pathway for the oxygen reduction reaction (ORR) in 0.1 M KOH with onset (Eonset) and half-wave (E1/2) potentials of 0.96 and 0.83 V versus RHE, respectively, closely matching those of benchmark Pt/C catalysts. The joint utilization of SBA-15 and etching endowed the self-supported Fe-N-C catalyst with high graphitization, moderate nitrogen doping, large surface area, hierarchical mesopores, and noncrystalline active Fe species with increased exposure over abundant pores, which synergistically enhanced ORR catalysis, giving rise to remarkable activity and selectivity while excluding contributions of crystalline Fe entities.

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JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

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ER -

Self-Supported Fe-N-C Electrocatalyst via Pyrolysis of EDTAFeNa Adsorbed on SBA-15 for the Oxygen Reduction Reaction

Abstract

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