A 98.2% energy efficiency Li-O2 battery using a LaNi-0.5Co0.5O3 perovskite cathode with extremely fast oxygen reduction and evolution kinetics

Qianyuan Qiu; Zheng Ze Pan; Penghui Yao; Jiashu Yuan; Chun Xia; Yicheng Zhao; Yongdan Li

doi:10.1016/j.cej.2022.139608

A 98.2% energy efficiency Li-O₂ battery using a LaNi-_0.5Co_0.5O₃ perovskite cathode with extremely fast oxygen reduction and evolution kinetics

Qianyuan Qiu, Zheng Ze Pan, Penghui Yao, Jiashu Yuan, Chun Xia, Yicheng Zhao, Yongdan Li

研究成果: Article › 査読

1 被引用数 (Scopus)

抄録

Rechargeable lithium-oxygen (Li-O₂) batteries have been regarded as a promising energy storage device, but its practical use is impeded by its low energy efficiency. Herein, a bi-functional catalytic perovskite LaNi_0.5Co_0.5O₃ (LNCO) is employed as the cathode of an efficient Li-O₂ battery with a molten nitrate salt electrolyte at 160 °C. It displays a stable low charge–discharge overpotential 50 mV with a high energy efficiency (EE) 98.2 % at 0.1 mA cm⁻² for over 100 cycles. The excellent performance is attributed to the extremely fast oxygen reduction and evolution kinetics on the surface of LNCO. The discharge product is Li₂O with a porous and fluffy morphology which facilitates the transfer of oxygen and other intermediate species. It is noted that Li₂O as a discharge product enables a theoretical specific energy density of 5200 Wh kg⁻¹, which is superior to the Li₂O₂ as product giving 3500 Wh kg⁻¹ for those ambient temperature Li-O₂ batteries.

本文言語	English
論文番号	139608
ジャーナル	Chemical Engineering Journal
巻	452
DOI	https://doi.org/10.1016/j.cej.2022.139608
出版ステータス	Published - 2023 1月 15
外部発表	はい

ASJC Scopus subject areas

化学 (全般)
環境化学
化学工学（全般）
産業および生産工学

UN SDG

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10.1016/j.cej.2022.139608

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引用スタイル

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title = "A 98.2% energy efficiency Li-O2 battery using a LaNi-0.5Co0.5O3 perovskite cathode with extremely fast oxygen reduction and evolution kinetics",

abstract = "Rechargeable lithium-oxygen (Li-O2) batteries have been regarded as a promising energy storage device, but its practical use is impeded by its low energy efficiency. Herein, a bi-functional catalytic perovskite LaNi0.5Co0.5O3 (LNCO) is employed as the cathode of an efficient Li-O2 battery with a molten nitrate salt electrolyte at 160 °C. It displays a stable low charge–discharge overpotential 50 mV with a high energy efficiency (EE) 98.2 % at 0.1 mA cm−2 for over 100 cycles. The excellent performance is attributed to the extremely fast oxygen reduction and evolution kinetics on the surface of LNCO. The discharge product is Li2O with a porous and fluffy morphology which facilitates the transfer of oxygen and other intermediate species. It is noted that Li2O as a discharge product enables a theoretical specific energy density of 5200 Wh kg−1, which is superior to the Li2O2 as product giving 3500 Wh kg−1 for those ambient temperature Li-O2 batteries.",

keywords = "Li-O battery, LiO pathway, Molten salt, Oxygen reduction mechanism, Perovskite catalyst",

author = "Qianyuan Qiu and Pan, {Zheng Ze} and Penghui Yao and Jiashu Yuan and Chun Xia and Yicheng Zhao and Yongdan Li",

note = "Funding Information: This work was supported with the start-up package of T10108 professorship offered by Aalto University. Q. Qiu, P. Yao and J. Yuan acknowledge the financial support from the China Scholarship Council (Grant No. 201906150134, 202006120046 and 201906250030). Z.-Z. Pan acknowledges the financial support of the Academy of Finland (Grant No. 324414). The authors acknowledge the technical support of SEM from OtaNano Nanomicroscopy Center and computational resources from CSC-IT center for science, Finland. Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2023",

month = jan,

day = "15",

doi = "10.1016/j.cej.2022.139608",

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T1 - A 98.2% energy efficiency Li-O2 battery using a LaNi-0.5Co0.5O3 perovskite cathode with extremely fast oxygen reduction and evolution kinetics

AU - Qiu, Qianyuan

AU - Pan, Zheng Ze

AU - Yao, Penghui

AU - Yuan, Jiashu

AU - Xia, Chun

AU - Zhao, Yicheng

AU - Li, Yongdan

N1 - Funding Information: This work was supported with the start-up package of T10108 professorship offered by Aalto University. Q. Qiu, P. Yao and J. Yuan acknowledge the financial support from the China Scholarship Council (Grant No. 201906150134, 202006120046 and 201906250030). Z.-Z. Pan acknowledges the financial support of the Academy of Finland (Grant No. 324414). The authors acknowledge the technical support of SEM from OtaNano Nanomicroscopy Center and computational resources from CSC-IT center for science, Finland. Publisher Copyright: © 2022 The Author(s)

PY - 2023/1/15

Y1 - 2023/1/15

N2 - Rechargeable lithium-oxygen (Li-O2) batteries have been regarded as a promising energy storage device, but its practical use is impeded by its low energy efficiency. Herein, a bi-functional catalytic perovskite LaNi0.5Co0.5O3 (LNCO) is employed as the cathode of an efficient Li-O2 battery with a molten nitrate salt electrolyte at 160 °C. It displays a stable low charge–discharge overpotential 50 mV with a high energy efficiency (EE) 98.2 % at 0.1 mA cm−2 for over 100 cycles. The excellent performance is attributed to the extremely fast oxygen reduction and evolution kinetics on the surface of LNCO. The discharge product is Li2O with a porous and fluffy morphology which facilitates the transfer of oxygen and other intermediate species. It is noted that Li2O as a discharge product enables a theoretical specific energy density of 5200 Wh kg−1, which is superior to the Li2O2 as product giving 3500 Wh kg−1 for those ambient temperature Li-O2 batteries.

AB - Rechargeable lithium-oxygen (Li-O2) batteries have been regarded as a promising energy storage device, but its practical use is impeded by its low energy efficiency. Herein, a bi-functional catalytic perovskite LaNi0.5Co0.5O3 (LNCO) is employed as the cathode of an efficient Li-O2 battery with a molten nitrate salt electrolyte at 160 °C. It displays a stable low charge–discharge overpotential 50 mV with a high energy efficiency (EE) 98.2 % at 0.1 mA cm−2 for over 100 cycles. The excellent performance is attributed to the extremely fast oxygen reduction and evolution kinetics on the surface of LNCO. The discharge product is Li2O with a porous and fluffy morphology which facilitates the transfer of oxygen and other intermediate species. It is noted that Li2O as a discharge product enables a theoretical specific energy density of 5200 Wh kg−1, which is superior to the Li2O2 as product giving 3500 Wh kg−1 for those ambient temperature Li-O2 batteries.

KW - Li-O battery

KW - LiO pathway

KW - Molten salt

KW - Oxygen reduction mechanism

KW - Perovskite catalyst

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