Highly accessible dual-metal atomic pairs for enhancing oxygen redox reaction in zinc−air batteries

Xiang Ao; Linfeng Li; So Yeon Yun; Yong Deng; Woosik Yoon; Peixing Wang; Xiaoyan Jin; Liming Dai; Chundong Wang; Seong Ju Hwang

doi:10.1016/j.nanoen.2023.108952

Highly accessible dual-metal atomic pairs for enhancing oxygen redox reaction in zinc−air batteries

Xiang Ao, Linfeng Li, So Yeon Yun, Yong Deng, Woosik Yoon, Peixing Wang, Xiaoyan Jin, Liming Dai, Chundong Wang, Seong Ju Hwang

Department of Applied Chemistry

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

6 Scopus citations

Abstract

The bifunctional oxygen electrocatalyst acts as a key component for zinc−air batteries; however, the design of economically-feasible bifunctional electrocatalysts showing outstanding functionality and durability remains challenging. Herein, we report the preparation of homogeneously scattered dual Fe−Ni atomic pairs stabilized in porous N-doped carbon matrix with a hierarchically porous nanoarchitecture (denoted as FeNi-NHC), wherein the atomically isolated bimetallic configuration is verified by combinative investigation of microscopy, spectroscopy, and theoretical computations. As an oxygen electrocatalyst in a basic electrolyte, FeNi-NHC exhibits an exceptional activity, achieving an outstanding half-wave potential (0.934 V vs. RHE) for oxygen reduction reaction, and a small overpotential for oxygen evolution reaction (254 mV at 10 mA cm^-2). Furthermore, the zinc–air battery constructed with FeNi-NHC catalyst delivers an excellent functionality featuring a high maximum power density (126 mW cm^-2) and insignificant activity decay after 200 charge−discharge cycles. Theoretical computations further reveal that the interaction effect of neighboring metal atoms in the bimetallic Fe−Ni sites energetically promotes the catalytic process by reducing the overall reaction barriers via optimization of adsorption−desorption behaviors.

Original language	English
Article number	108952
Journal	Nano Energy
Volume	118
DOIs	https://doi.org/10.1016/j.nanoen.2023.108952
State	Published - 15 Dec 2023

Keywords

Bifunctional oxygen electrocatalysts
Dual-metal pairs
Hierarchically porous carbon
Zinc-air batteries

UN SDGs

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

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10.1016/j.nanoen.2023.108952

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@article{316888f97369456e8edaa5716a2d5eef,

title = "Highly accessible dual-metal atomic pairs for enhancing oxygen redox reaction in zinc−air batteries",

abstract = "The bifunctional oxygen electrocatalyst acts as a key component for zinc−air batteries; however, the design of economically-feasible bifunctional electrocatalysts showing outstanding functionality and durability remains challenging. Herein, we report the preparation of homogeneously scattered dual Fe−Ni atomic pairs stabilized in porous N-doped carbon matrix with a hierarchically porous nanoarchitecture (denoted as FeNi-NHC), wherein the atomically isolated bimetallic configuration is verified by combinative investigation of microscopy, spectroscopy, and theoretical computations. As an oxygen electrocatalyst in a basic electrolyte, FeNi-NHC exhibits an exceptional activity, achieving an outstanding half-wave potential (0.934 V vs. RHE) for oxygen reduction reaction, and a small overpotential for oxygen evolution reaction (254 mV at 10 mA cm-2). Furthermore, the zinc–air battery constructed with FeNi-NHC catalyst delivers an excellent functionality featuring a high maximum power density (126 mW cm-2) and insignificant activity decay after 200 charge−discharge cycles. Theoretical computations further reveal that the interaction effect of neighboring metal atoms in the bimetallic Fe−Ni sites energetically promotes the catalytic process by reducing the overall reaction barriers via optimization of adsorption−desorption behaviors.",

keywords = "Bifunctional oxygen electrocatalysts, Dual-metal pairs, Hierarchically porous carbon, Zinc-air batteries",

author = "Xiang Ao and Linfeng Li and Yun, {So Yeon} and Yong Deng and Woosik Yoon and Peixing Wang and Xiaoyan Jin and Liming Dai and Chundong Wang and Hwang, {Seong Ju}",

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year = "2023",

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doi = "10.1016/j.nanoen.2023.108952",

language = "English",

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T1 - Highly accessible dual-metal atomic pairs for enhancing oxygen redox reaction in zinc−air batteries

AU - Ao, Xiang

AU - Li, Linfeng

AU - Yun, So Yeon

AU - Deng, Yong

AU - Yoon, Woosik

AU - Wang, Peixing

AU - Jin, Xiaoyan

AU - Dai, Liming

AU - Wang, Chundong

AU - Hwang, Seong Ju

PY - 2023/12/15

Y1 - 2023/12/15

N2 - The bifunctional oxygen electrocatalyst acts as a key component for zinc−air batteries; however, the design of economically-feasible bifunctional electrocatalysts showing outstanding functionality and durability remains challenging. Herein, we report the preparation of homogeneously scattered dual Fe−Ni atomic pairs stabilized in porous N-doped carbon matrix with a hierarchically porous nanoarchitecture (denoted as FeNi-NHC), wherein the atomically isolated bimetallic configuration is verified by combinative investigation of microscopy, spectroscopy, and theoretical computations. As an oxygen electrocatalyst in a basic electrolyte, FeNi-NHC exhibits an exceptional activity, achieving an outstanding half-wave potential (0.934 V vs. RHE) for oxygen reduction reaction, and a small overpotential for oxygen evolution reaction (254 mV at 10 mA cm-2). Furthermore, the zinc–air battery constructed with FeNi-NHC catalyst delivers an excellent functionality featuring a high maximum power density (126 mW cm-2) and insignificant activity decay after 200 charge−discharge cycles. Theoretical computations further reveal that the interaction effect of neighboring metal atoms in the bimetallic Fe−Ni sites energetically promotes the catalytic process by reducing the overall reaction barriers via optimization of adsorption−desorption behaviors.

AB - The bifunctional oxygen electrocatalyst acts as a key component for zinc−air batteries; however, the design of economically-feasible bifunctional electrocatalysts showing outstanding functionality and durability remains challenging. Herein, we report the preparation of homogeneously scattered dual Fe−Ni atomic pairs stabilized in porous N-doped carbon matrix with a hierarchically porous nanoarchitecture (denoted as FeNi-NHC), wherein the atomically isolated bimetallic configuration is verified by combinative investigation of microscopy, spectroscopy, and theoretical computations. As an oxygen electrocatalyst in a basic electrolyte, FeNi-NHC exhibits an exceptional activity, achieving an outstanding half-wave potential (0.934 V vs. RHE) for oxygen reduction reaction, and a small overpotential for oxygen evolution reaction (254 mV at 10 mA cm-2). Furthermore, the zinc–air battery constructed with FeNi-NHC catalyst delivers an excellent functionality featuring a high maximum power density (126 mW cm-2) and insignificant activity decay after 200 charge−discharge cycles. Theoretical computations further reveal that the interaction effect of neighboring metal atoms in the bimetallic Fe−Ni sites energetically promotes the catalytic process by reducing the overall reaction barriers via optimization of adsorption−desorption behaviors.

KW - Bifunctional oxygen electrocatalysts

KW - Dual-metal pairs

KW - Hierarchically porous carbon

KW - Zinc-air batteries

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Highly accessible dual-metal atomic pairs for enhancing oxygen redox reaction in zinc−air batteries

Abstract

Keywords

UN SDGs

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