Fascinating Bifunctional Electrocatalytic Activity via a Mesoporous Structured FeMnO3@ZrO2 Matrix as an Efficient Cathode for Li-O2 Batteries

Raja Palani; Yi Shiuan Wu; She Huang Wu; Wen Chen Chien; Shingjiang Jessie Lue; Rajan Jose; Chun Chen Yang

doi:10.1021/acsaem.3c00052

Fascinating Bifunctional Electrocatalytic Activity via a Mesoporous Structured FeMnO₃@ZrO₂ Matrix as an Efficient Cathode for Li-O₂ Batteries

Raja Palani
, Yi Shiuan Wu
, She Huang Wu
, Wen Chen Chien
, Shingjiang Jessie Lue
, Rajan Jose
, Chun Chen Yang^*

^*Corresponding author for this work

Department of Chemical and Materials Engineering

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

16 Scopus citations

Abstract

Nonaqueous Li-O₂ batteries have remarkable potential for use in future-generation sustainable green energy storage systems. Perovskites of the type ABO₃ provide bifunctional electrocatalytic activity superior to that of dual mixed-metal oxides due to the presence of crystallographic defects and oxygen vacancies, arising from the multivalency of the A and B cations. In this study, we used a facile hydrothermal method with an ammonia solution to modify coralline-like ZrO₂ with Fe_0.5Mn_0.5O₃ (FeMnO₃) and graphene nanosheets (GNSs). The porous structure of the resulting ZrO₂@FeMnO₃/GNS system featured a high surface area and large volume, thereby exposing a great number of active sites. X-ray photoelectron spectroscopy revealed that the surface of the as-synthesized FeMnO₃@ZrO₂/GNS cathode material was rich with oxygen vacancies (i.e., a huge quantity of defects). This coralline-like bifunctional electrocatalyst possessed effective redox capability between Li₂O₂ and O₂ as a result of its excellent catalytic activity in the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). We examined the charge/discharge behavior of corresponding electrodes (EL-cell type for Li-O₂ battery) in the voltage range of 2.0-4.5 V (vs Li/Li⁺). The synergistic effects of the high catalytic ability and coralline-like microstructure of our ZrO₂@FeMnO₃/GNS catalyst for Li-O₂ batteries resulted in its superior rate capability and excellent long-term cyclability, sustaining 100 cycles at 100 mA g^-1 with a limited capacity of 1000 mAh g^-1. The cell overpotential was ∼0.14 V when adding LiI as a redox mediator, resulting in a more practical Li-O₂ battery with the ZrO₂@FeMnO₃/GNS catalyst. Therefore, ZrO₂@FeMnO₃/GNS catalysts having distinctive coralline-like structures can display outstanding bifunctional catalytic activity and electrical conductivity, suggesting great potential for enhanced Li-O₂ battery applications.

Original language	English
Pages (from-to)	4734-4747
Number of pages	14
Journal	ACS Applied Energy Materials
Volume	6
Issue number	9
DOIs	https://doi.org/10.1021/acsaem.3c00052
State	Published - 08 05 2023

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society

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

SDG 7 Affordable and Clean Energy

Keywords

Li−O battery
ZrO@FeMnO/GNS catalyst
bifunctional activity
coralline-like FeMnO
perovskite

Access to Document

10.1021/acsaem.3c00052

Cite this

@article{38098cd1a95148ea8c3c48256094a9e2,

title = "Fascinating Bifunctional Electrocatalytic Activity via a Mesoporous Structured FeMnO3@ZrO2 Matrix as an Efficient Cathode for Li-O2 Batteries",

abstract = "Nonaqueous Li-O2 batteries have remarkable potential for use in future-generation sustainable green energy storage systems. Perovskites of the type ABO3 provide bifunctional electrocatalytic activity superior to that of dual mixed-metal oxides due to the presence of crystallographic defects and oxygen vacancies, arising from the multivalency of the A and B cations. In this study, we used a facile hydrothermal method with an ammonia solution to modify coralline-like ZrO2 with Fe0.5Mn0.5O3 (FeMnO3) and graphene nanosheets (GNSs). The porous structure of the resulting ZrO2@FeMnO3/GNS system featured a high surface area and large volume, thereby exposing a great number of active sites. X-ray photoelectron spectroscopy revealed that the surface of the as-synthesized FeMnO3@ZrO2/GNS cathode material was rich with oxygen vacancies (i.e., a huge quantity of defects). This coralline-like bifunctional electrocatalyst possessed effective redox capability between Li2O2 and O2 as a result of its excellent catalytic activity in the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). We examined the charge/discharge behavior of corresponding electrodes (EL-cell type for Li-O2 battery) in the voltage range of 2.0-4.5 V (vs Li/Li+). The synergistic effects of the high catalytic ability and coralline-like microstructure of our ZrO2@FeMnO3/GNS catalyst for Li-O2 batteries resulted in its superior rate capability and excellent long-term cyclability, sustaining 100 cycles at 100 mA g-1 with a limited capacity of 1000 mAh g-1. The cell overpotential was ∼0.14 V when adding LiI as a redox mediator, resulting in a more practical Li-O2 battery with the ZrO2@FeMnO3/GNS catalyst. Therefore, ZrO2@FeMnO3/GNS catalysts having distinctive coralline-like structures can display outstanding bifunctional catalytic activity and electrical conductivity, suggesting great potential for enhanced Li-O2 battery applications.",

keywords = "Li−O battery, ZrO@FeMnO/GNS catalyst, bifunctional activity, coralline-like FeMnO, perovskite",

author = "Raja Palani and Wu, \{Yi Shiuan\} and Wu, \{She Huang\} and Chien, \{Wen Chen\} and Lue, \{Shingjiang Jessie\} and Rajan Jose and Yang, \{Chun Chen\}",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society",

year = "2023",

month = may,

day = "8",

doi = "10.1021/acsaem.3c00052",

language = "英语",

volume = "6",

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journal = "ACS Applied Energy Materials",

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TY - JOUR

T1 - Fascinating Bifunctional Electrocatalytic Activity via a Mesoporous Structured FeMnO3@ZrO2 Matrix as an Efficient Cathode for Li-O2 Batteries

AU - Palani, Raja

AU - Wu, Yi Shiuan

AU - Wu, She Huang

AU - Chien, Wen Chen

AU - Lue, Shingjiang Jessie

AU - Jose, Rajan

AU - Yang, Chun Chen

PY - 2023/5/8

Y1 - 2023/5/8

N2 - Nonaqueous Li-O2 batteries have remarkable potential for use in future-generation sustainable green energy storage systems. Perovskites of the type ABO3 provide bifunctional electrocatalytic activity superior to that of dual mixed-metal oxides due to the presence of crystallographic defects and oxygen vacancies, arising from the multivalency of the A and B cations. In this study, we used a facile hydrothermal method with an ammonia solution to modify coralline-like ZrO2 with Fe0.5Mn0.5O3 (FeMnO3) and graphene nanosheets (GNSs). The porous structure of the resulting ZrO2@FeMnO3/GNS system featured a high surface area and large volume, thereby exposing a great number of active sites. X-ray photoelectron spectroscopy revealed that the surface of the as-synthesized FeMnO3@ZrO2/GNS cathode material was rich with oxygen vacancies (i.e., a huge quantity of defects). This coralline-like bifunctional electrocatalyst possessed effective redox capability between Li2O2 and O2 as a result of its excellent catalytic activity in the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). We examined the charge/discharge behavior of corresponding electrodes (EL-cell type for Li-O2 battery) in the voltage range of 2.0-4.5 V (vs Li/Li+). The synergistic effects of the high catalytic ability and coralline-like microstructure of our ZrO2@FeMnO3/GNS catalyst for Li-O2 batteries resulted in its superior rate capability and excellent long-term cyclability, sustaining 100 cycles at 100 mA g-1 with a limited capacity of 1000 mAh g-1. The cell overpotential was ∼0.14 V when adding LiI as a redox mediator, resulting in a more practical Li-O2 battery with the ZrO2@FeMnO3/GNS catalyst. Therefore, ZrO2@FeMnO3/GNS catalysts having distinctive coralline-like structures can display outstanding bifunctional catalytic activity and electrical conductivity, suggesting great potential for enhanced Li-O2 battery applications.

AB - Nonaqueous Li-O2 batteries have remarkable potential for use in future-generation sustainable green energy storage systems. Perovskites of the type ABO3 provide bifunctional electrocatalytic activity superior to that of dual mixed-metal oxides due to the presence of crystallographic defects and oxygen vacancies, arising from the multivalency of the A and B cations. In this study, we used a facile hydrothermal method with an ammonia solution to modify coralline-like ZrO2 with Fe0.5Mn0.5O3 (FeMnO3) and graphene nanosheets (GNSs). The porous structure of the resulting ZrO2@FeMnO3/GNS system featured a high surface area and large volume, thereby exposing a great number of active sites. X-ray photoelectron spectroscopy revealed that the surface of the as-synthesized FeMnO3@ZrO2/GNS cathode material was rich with oxygen vacancies (i.e., a huge quantity of defects). This coralline-like bifunctional electrocatalyst possessed effective redox capability between Li2O2 and O2 as a result of its excellent catalytic activity in the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). We examined the charge/discharge behavior of corresponding electrodes (EL-cell type for Li-O2 battery) in the voltage range of 2.0-4.5 V (vs Li/Li+). The synergistic effects of the high catalytic ability and coralline-like microstructure of our ZrO2@FeMnO3/GNS catalyst for Li-O2 batteries resulted in its superior rate capability and excellent long-term cyclability, sustaining 100 cycles at 100 mA g-1 with a limited capacity of 1000 mAh g-1. The cell overpotential was ∼0.14 V when adding LiI as a redox mediator, resulting in a more practical Li-O2 battery with the ZrO2@FeMnO3/GNS catalyst. Therefore, ZrO2@FeMnO3/GNS catalysts having distinctive coralline-like structures can display outstanding bifunctional catalytic activity and electrical conductivity, suggesting great potential for enhanced Li-O2 battery applications.

KW - Li−O battery

KW - ZrO@FeMnO/GNS catalyst

KW - bifunctional activity

KW - coralline-like FeMnO

KW - perovskite

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U2 - 10.1021/acsaem.3c00052

DO - 10.1021/acsaem.3c00052

M3 - 文章

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VL - 6

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