Metal-mediated Schiff base polymer enables metal/nitrogen codoped carbon nanosheets as efficient bifunctional electrocatalyst for durable rechargeable Zn-air batteries

Weichao Xie; Yijiang Liu; Yan Yan; Mei Yang; Mingyue Zhang; Bei Liu; Huaming Li; Hongbiao Chen; Zhiqun Lin

doi:10.1016/j.ensm.2023.102783

Metal-mediated Schiff base polymer enables metal/nitrogen codoped carbon nanosheets as efficient bifunctional electrocatalyst for durable rechargeable Zn-air batteries

Weichao Xie, Yijiang Liu, Yan Yan, Mei Yang, Mingyue Zhang, Bei Liu, Huaming Li, Hongbiao Chen, Zhiqun Lin

Department of Chemistry & Nanoscience

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

29 Scopus citations

Abstract

We report a simple yet robust route to bifunctional electrocatalysts comprising FeNi and Co₄N hybrid nanoparticles co-embedded within N-doped carbon nanosheets (denoted FeNi/Co₄N-NCS) for rechargeable Zn-air batteries (ZABs) with high power density and capacity as well as outstanding cycling stability, markedly outperforming the Pt/C&IrO₂ electrocatalyst counterpart. The as-crafted FeNi/Co₄N-NCS electrocatalysts display outstanding bifunctional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activity with a low overall oxygen electrode activity (ΔE = 0.664 V). Density functional theory (DFT) calculations reveal that the synergy of FeNi and Co₄N reduces the rate-determining step (RDS) energy barrier, thereby greatly increasing electrocatalytic activity. The aqueous ZAB assembled with FeNi/Co₄N-NCS delivers a high power density of 160 mW cm⁻², large specific capacity of 812 mAh g⁻¹_Zn, and long cycling life of 1450 h at 5 mA cm⁻². This study highlights an effective strategy to yield durable bifunctional electrocatalysts for metal-air batteries.

Original language	English
Article number	102783
Journal	Energy Storage Materials
Volume	59
DOIs	https://doi.org/10.1016/j.ensm.2023.102783
State	Published - May 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Bifunctional catalyst
FeNi and CoN hybrid nanoparticles
N-doped carbon nanosheets
Schiff base polymer
Zn-air battery

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ensm.2023.102783

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title = "Metal-mediated Schiff base polymer enables metal/nitrogen codoped carbon nanosheets as efficient bifunctional electrocatalyst for durable rechargeable Zn-air batteries",

abstract = "We report a simple yet robust route to bifunctional electrocatalysts comprising FeNi and Co4N hybrid nanoparticles co-embedded within N-doped carbon nanosheets (denoted FeNi/Co4N-NCS) for rechargeable Zn-air batteries (ZABs) with high power density and capacity as well as outstanding cycling stability, markedly outperforming the Pt/C&IrO2 electrocatalyst counterpart. The as-crafted FeNi/Co4N-NCS electrocatalysts display outstanding bifunctional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activity with a low overall oxygen electrode activity (ΔE = 0.664 V). Density functional theory (DFT) calculations reveal that the synergy of FeNi and Co4N reduces the rate-determining step (RDS) energy barrier, thereby greatly increasing electrocatalytic activity. The aqueous ZAB assembled with FeNi/Co4N-NCS delivers a high power density of 160 mW cm−2, large specific capacity of 812 mAh g−1Zn, and long cycling life of 1450 h at 5 mA cm−2. This study highlights an effective strategy to yield durable bifunctional electrocatalysts for metal-air batteries.",

keywords = "Bifunctional catalyst, FeNi and CoN hybrid nanoparticles, N-doped carbon nanosheets, Schiff base polymer, Zn-air battery",

author = "Weichao Xie and Yijiang Liu and Yan Yan and Mei Yang and Mingyue Zhang and Bei Liu and Huaming Li and Hongbiao Chen and Zhiqun Lin",

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T1 - Metal-mediated Schiff base polymer enables metal/nitrogen codoped carbon nanosheets as efficient bifunctional electrocatalyst for durable rechargeable Zn-air batteries

AU - Xie, Weichao

AU - Liu, Yijiang

AU - Yan, Yan

AU - Yang, Mei

AU - Zhang, Mingyue

AU - Liu, Bei

AU - Li, Huaming

AU - Chen, Hongbiao

AU - Lin, Zhiqun

PY - 2023/5

Y1 - 2023/5

N2 - We report a simple yet robust route to bifunctional electrocatalysts comprising FeNi and Co4N hybrid nanoparticles co-embedded within N-doped carbon nanosheets (denoted FeNi/Co4N-NCS) for rechargeable Zn-air batteries (ZABs) with high power density and capacity as well as outstanding cycling stability, markedly outperforming the Pt/C&IrO2 electrocatalyst counterpart. The as-crafted FeNi/Co4N-NCS electrocatalysts display outstanding bifunctional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activity with a low overall oxygen electrode activity (ΔE = 0.664 V). Density functional theory (DFT) calculations reveal that the synergy of FeNi and Co4N reduces the rate-determining step (RDS) energy barrier, thereby greatly increasing electrocatalytic activity. The aqueous ZAB assembled with FeNi/Co4N-NCS delivers a high power density of 160 mW cm−2, large specific capacity of 812 mAh g−1Zn, and long cycling life of 1450 h at 5 mA cm−2. This study highlights an effective strategy to yield durable bifunctional electrocatalysts for metal-air batteries.

AB - We report a simple yet robust route to bifunctional electrocatalysts comprising FeNi and Co4N hybrid nanoparticles co-embedded within N-doped carbon nanosheets (denoted FeNi/Co4N-NCS) for rechargeable Zn-air batteries (ZABs) with high power density and capacity as well as outstanding cycling stability, markedly outperforming the Pt/C&IrO2 electrocatalyst counterpart. The as-crafted FeNi/Co4N-NCS electrocatalysts display outstanding bifunctional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activity with a low overall oxygen electrode activity (ΔE = 0.664 V). Density functional theory (DFT) calculations reveal that the synergy of FeNi and Co4N reduces the rate-determining step (RDS) energy barrier, thereby greatly increasing electrocatalytic activity. The aqueous ZAB assembled with FeNi/Co4N-NCS delivers a high power density of 160 mW cm−2, large specific capacity of 812 mAh g−1Zn, and long cycling life of 1450 h at 5 mA cm−2. This study highlights an effective strategy to yield durable bifunctional electrocatalysts for metal-air batteries.

KW - Bifunctional catalyst

KW - FeNi and CoN hybrid nanoparticles

KW - N-doped carbon nanosheets

KW - Schiff base polymer

KW - Zn-air battery

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Metal-mediated Schiff base polymer enables metal/nitrogen codoped carbon nanosheets as efficient bifunctional electrocatalyst for durable rechargeable Zn-air batteries

Abstract

Bibliographical note

Keywords

UN SDGs

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