Consolidating the Oxygen Reduction with Sub-Polarized Graphitic Fe-N4 Atomic Sites for an Efficient Flexible Zinc-Air Battery

Wenfang Zhai; Jialei Li; Yahui Tian; Hang Liu; Yaoda Liu; Zhixin Guo; Thangavel Sakthivel; Licheng Bai; Xue Feng Yu; Zhengfei Dai

doi:10.1021/acs.nanolett.4c03665

Consolidating the Oxygen Reduction with Sub-Polarized Graphitic Fe-N₄ Atomic Sites for an Efficient Flexible Zinc-Air Battery

Wenfang Zhai
, Jialei Li
, Yahui Tian
, Hang Liu
, Yaoda Liu
, Zhixin Guo
, Thangavel Sakthivel
, Licheng Bai
, Xue Feng Yu
, Zhengfei Dai

School of Materials Science and Engineering

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

20 Scopus citations

Abstract

The effectuation of the Zn-air battery (ZAB) is appealing for active and durable catalysts to kinetically drive the sluggish cathodic oxygen reduction reaction (ORR). Atomic metal-N_x-C sites are widely witnessed with Pt-like activity, but their demetalations still severely restrict the durability in ORR. Here we have profiled an ordered hierarchical porous carbon supported Fe-N₄ single-atom (FeNC) catalyst by a template derivation method for efficient ORR and flexible ZAB studies. The FeNC structure is observed with a sub-polarized graphitic Fe-N₄ coordination with a shortened Fe-N bond for potentially consolidating the ORR, together with the hierarchical porous matrix for kinetical mass transfer. Resultantly, the optimized FeNC catalyst showcases Pt-beyond alkaline ORR activity (E_1/2 = 0.95 V) with long-term durability for 100 h, delivering the flexible ZAB device with high power density (251 mW cm^-2) and durable cycle life (80 h). This research underscores the criterion in rationalizing active and robust ORR catalysts through metal-nitrogen bond modulation.

Original language	English
Pages (from-to)	14632-14640
Number of pages	9
Journal	Nano Letters
Volume	24
Issue number	46
DOIs	https://doi.org/10.1021/acs.nanolett.4c03665
State	Published - 20 Nov 2024

Keywords

Bond Polarization
Fe−N Structure
Flexible Zinc−Air Battery
Oxygen Reduction Reaction
Single-Atom Electrocatalysts

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10.1021/acs.nanolett.4c03665

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@article{eef423a1be304cb58edb91e5f6e85869,

title = "Consolidating the Oxygen Reduction with Sub-Polarized Graphitic Fe-N4 Atomic Sites for an Efficient Flexible Zinc-Air Battery",

abstract = "The effectuation of the Zn-air battery (ZAB) is appealing for active and durable catalysts to kinetically drive the sluggish cathodic oxygen reduction reaction (ORR). Atomic metal-Nx-C sites are widely witnessed with Pt-like activity, but their demetalations still severely restrict the durability in ORR. Here we have profiled an ordered hierarchical porous carbon supported Fe-N4 single-atom (FeNC) catalyst by a template derivation method for efficient ORR and flexible ZAB studies. The FeNC structure is observed with a sub-polarized graphitic Fe-N4 coordination with a shortened Fe-N bond for potentially consolidating the ORR, together with the hierarchical porous matrix for kinetical mass transfer. Resultantly, the optimized FeNC catalyst showcases Pt-beyond alkaline ORR activity (E1/2 = 0.95 V) with long-term durability for 100 h, delivering the flexible ZAB device with high power density (251 mW cm-2) and durable cycle life (80 h). This research underscores the criterion in rationalizing active and robust ORR catalysts through metal-nitrogen bond modulation.",

keywords = "Bond Polarization, Fe−N Structure, Flexible Zinc−Air Battery, Oxygen Reduction Reaction, Single-Atom Electrocatalysts",

author = "Wenfang Zhai and Jialei Li and Yahui Tian and Hang Liu and Yaoda Liu and Zhixin Guo and Thangavel Sakthivel and Licheng Bai and Yu, \{Xue Feng\} and Zhengfei Dai",

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T1 - Consolidating the Oxygen Reduction with Sub-Polarized Graphitic Fe-N4 Atomic Sites for an Efficient Flexible Zinc-Air Battery

AU - Zhai, Wenfang

AU - Li, Jialei

AU - Tian, Yahui

AU - Liu, Hang

AU - Liu, Yaoda

AU - Guo, Zhixin

AU - Sakthivel, Thangavel

AU - Bai, Licheng

AU - Yu, Xue Feng

AU - Dai, Zhengfei

PY - 2024/11/20

Y1 - 2024/11/20

N2 - The effectuation of the Zn-air battery (ZAB) is appealing for active and durable catalysts to kinetically drive the sluggish cathodic oxygen reduction reaction (ORR). Atomic metal-Nx-C sites are widely witnessed with Pt-like activity, but their demetalations still severely restrict the durability in ORR. Here we have profiled an ordered hierarchical porous carbon supported Fe-N4 single-atom (FeNC) catalyst by a template derivation method for efficient ORR and flexible ZAB studies. The FeNC structure is observed with a sub-polarized graphitic Fe-N4 coordination with a shortened Fe-N bond for potentially consolidating the ORR, together with the hierarchical porous matrix for kinetical mass transfer. Resultantly, the optimized FeNC catalyst showcases Pt-beyond alkaline ORR activity (E1/2 = 0.95 V) with long-term durability for 100 h, delivering the flexible ZAB device with high power density (251 mW cm-2) and durable cycle life (80 h). This research underscores the criterion in rationalizing active and robust ORR catalysts through metal-nitrogen bond modulation.

AB - The effectuation of the Zn-air battery (ZAB) is appealing for active and durable catalysts to kinetically drive the sluggish cathodic oxygen reduction reaction (ORR). Atomic metal-Nx-C sites are widely witnessed with Pt-like activity, but their demetalations still severely restrict the durability in ORR. Here we have profiled an ordered hierarchical porous carbon supported Fe-N4 single-atom (FeNC) catalyst by a template derivation method for efficient ORR and flexible ZAB studies. The FeNC structure is observed with a sub-polarized graphitic Fe-N4 coordination with a shortened Fe-N bond for potentially consolidating the ORR, together with the hierarchical porous matrix for kinetical mass transfer. Resultantly, the optimized FeNC catalyst showcases Pt-beyond alkaline ORR activity (E1/2 = 0.95 V) with long-term durability for 100 h, delivering the flexible ZAB device with high power density (251 mW cm-2) and durable cycle life (80 h). This research underscores the criterion in rationalizing active and robust ORR catalysts through metal-nitrogen bond modulation.

KW - Bond Polarization

KW - Fe−N Structure

KW - Flexible Zinc−Air Battery

KW - Oxygen Reduction Reaction

KW - Single-Atom Electrocatalysts

UR - https://www.scopus.com/pages/publications/85208717723

U2 - 10.1021/acs.nanolett.4c03665

DO - 10.1021/acs.nanolett.4c03665

M3 - 文章

C2 - 39510844

AN - SCOPUS:85208717723

SN - 1530-6984

VL - 24

SP - 14632

EP - 14640

JO - Nano Letters

JF - Nano Letters

IS - 46

ER -

Consolidating the Oxygen Reduction with Sub-Polarized Graphitic Fe-N₄ Atomic Sites for an Efficient Flexible Zinc-Air Battery

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Keywords

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