Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction

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Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction. / Jia, Yin; Xiong, Xuya; Wang, Danni; Duan, Xinxuan; Sun, Kai; Li, Yajie; Zheng, Lirong; Lin, Wenfeng; Dong, Mingdong; Zhang, Guoxin; Liu, Wen; Sun, Xiaoming.

In: Nano-Micro Letters, Vol. 12, No. 1, 116, 05.2020.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Jia, Y, Xiong, X, Wang, D, Duan, X, Sun, K, Li, Y, Zheng, L, Lin, W, Dong, M, Zhang, G, Liu, W & Sun, X 2020, 'Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction', Nano-Micro Letters, vol. 12, no. 1, 116. https://doi.org/10.1007/s40820-020-00456-8

APA

Jia, Y., Xiong, X., Wang, D., Duan, X., Sun, K., Li, Y., Zheng, L., Lin, W., Dong, M., Zhang, G., Liu, W., & Sun, X. (2020). Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction. Nano-Micro Letters, 12(1), [116]. https://doi.org/10.1007/s40820-020-00456-8

CBE

Jia Y, Xiong X, Wang D, Duan X, Sun K, Li Y, Zheng L, Lin W, Dong M, Zhang G, Liu W, Sun X. 2020. Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction. Nano-Micro Letters. 12(1):Article 116. https://doi.org/10.1007/s40820-020-00456-8

MLA

Vancouver

Author

Jia, Yin ; Xiong, Xuya ; Wang, Danni ; Duan, Xinxuan ; Sun, Kai ; Li, Yajie ; Zheng, Lirong ; Lin, Wenfeng ; Dong, Mingdong ; Zhang, Guoxin ; Liu, Wen ; Sun, Xiaoming. / Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction. In: Nano-Micro Letters. 2020 ; Vol. 12, No. 1.

Bibtex

@article{8999fa3d1baf42e58e96f4f4b4896009,
title = "Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction",
abstract = "Immobilizing metal atoms by multiple nitrogen atoms has triggered exceptional catalytic activity toward many critical electrochemical reactions due to their merits of highly unsaturated coordination and strong metal-substrate interaction. Herein, atomically dispersed Fe-NC material with precise sulfur modification to Fe periphery (termed as Fe-NSC) was synthesized, X-ray absorption near edge structure analysis confirmed the central Fe atom being stabilized in a specific configuration of Fe(N3)(N–C–S). By enabling precisely localized S doping, the electronic structure of Fe-N4 moiety could be mediated, leading to the beneficial adjustment of absorption/desorption properties of reactant/intermediate on Fe center. Density functional theory simulation suggested that more negative charge density would be localized over Fe-N4 moiety after S doping, allowing weakened binding capability to *OH intermediates and faster charge transfer from Fe center to O species. Electrochemical measurements revealed that the Fe-NSC sample exhibited significantly enhanced oxygen reduction reaction performance compared to the S-free Fe-NC material (termed as Fe-NC), showing an excellent onset potential of 1.09 V and half-wave potential of 0.92 V in 0.1 M KOH. Our work may enlighten relevant studies regarding to accessing improvement on the catalytic performance of atomically dispersed M-NC materials by managing precisely tuned local environments of M-Nx moiety.[Figure not available: see fulltext.].",
keywords = "Atomic dispersion, Electronic structure, Iron–nitrogen moiety, Oxygen reduction, Sulfur doping",
author = "Yin Jia and Xuya Xiong and Danni Wang and Xinxuan Duan and Kai Sun and Yajie Li and Lirong Zheng and Wenfeng Lin and Mingdong Dong and Guoxin Zhang and Wen Liu and Xiaoming Sun",
year = "2020",
month = may,
doi = "10.1007/s40820-020-00456-8",
language = "English",
volume = "12",
journal = "Nano-Micro Letters",
issn = "2150-5551",
publisher = "SpringerOpen",
number = "1",

}

RIS

TY - JOUR

T1 - Atomically Dispersed Fe-N4 Modified with Precisely Located S for Highly Efficient Oxygen Reduction

AU - Jia, Yin

AU - Xiong, Xuya

AU - Wang, Danni

AU - Duan, Xinxuan

AU - Sun, Kai

AU - Li, Yajie

AU - Zheng, Lirong

AU - Lin, Wenfeng

AU - Dong, Mingdong

AU - Zhang, Guoxin

AU - Liu, Wen

AU - Sun, Xiaoming

PY - 2020/5

Y1 - 2020/5

N2 - Immobilizing metal atoms by multiple nitrogen atoms has triggered exceptional catalytic activity toward many critical electrochemical reactions due to their merits of highly unsaturated coordination and strong metal-substrate interaction. Herein, atomically dispersed Fe-NC material with precise sulfur modification to Fe periphery (termed as Fe-NSC) was synthesized, X-ray absorption near edge structure analysis confirmed the central Fe atom being stabilized in a specific configuration of Fe(N3)(N–C–S). By enabling precisely localized S doping, the electronic structure of Fe-N4 moiety could be mediated, leading to the beneficial adjustment of absorption/desorption properties of reactant/intermediate on Fe center. Density functional theory simulation suggested that more negative charge density would be localized over Fe-N4 moiety after S doping, allowing weakened binding capability to *OH intermediates and faster charge transfer from Fe center to O species. Electrochemical measurements revealed that the Fe-NSC sample exhibited significantly enhanced oxygen reduction reaction performance compared to the S-free Fe-NC material (termed as Fe-NC), showing an excellent onset potential of 1.09 V and half-wave potential of 0.92 V in 0.1 M KOH. Our work may enlighten relevant studies regarding to accessing improvement on the catalytic performance of atomically dispersed M-NC materials by managing precisely tuned local environments of M-Nx moiety.[Figure not available: see fulltext.].

AB - Immobilizing metal atoms by multiple nitrogen atoms has triggered exceptional catalytic activity toward many critical electrochemical reactions due to their merits of highly unsaturated coordination and strong metal-substrate interaction. Herein, atomically dispersed Fe-NC material with precise sulfur modification to Fe periphery (termed as Fe-NSC) was synthesized, X-ray absorption near edge structure analysis confirmed the central Fe atom being stabilized in a specific configuration of Fe(N3)(N–C–S). By enabling precisely localized S doping, the electronic structure of Fe-N4 moiety could be mediated, leading to the beneficial adjustment of absorption/desorption properties of reactant/intermediate on Fe center. Density functional theory simulation suggested that more negative charge density would be localized over Fe-N4 moiety after S doping, allowing weakened binding capability to *OH intermediates and faster charge transfer from Fe center to O species. Electrochemical measurements revealed that the Fe-NSC sample exhibited significantly enhanced oxygen reduction reaction performance compared to the S-free Fe-NC material (termed as Fe-NC), showing an excellent onset potential of 1.09 V and half-wave potential of 0.92 V in 0.1 M KOH. Our work may enlighten relevant studies regarding to accessing improvement on the catalytic performance of atomically dispersed M-NC materials by managing precisely tuned local environments of M-Nx moiety.[Figure not available: see fulltext.].

KW - Atomic dispersion

KW - Electronic structure

KW - Iron–nitrogen moiety

KW - Oxygen reduction

KW - Sulfur doping

UR - http://www.scopus.com/inward/record.url?scp=85085508295&partnerID=8YFLogxK

U2 - 10.1007/s40820-020-00456-8

DO - 10.1007/s40820-020-00456-8

M3 - Journal article

AN - SCOPUS:85085508295

VL - 12

JO - Nano-Micro Letters

JF - Nano-Micro Letters

SN - 2150-5551

IS - 1

M1 - 116

ER -