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

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

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 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.

Original language	English
Article number	139608
Journal	Chemical Engineering Journal
Volume	452
DOIs	https://doi.org/10.1016/j.cej.2022.139608
Publication status	Published - 2023 Jan 15
Externally published	Yes

Keywords

Li-O battery
LiO pathway
Molten salt
Oxygen reduction mechanism
Perovskite catalyst

ASJC Scopus subject areas

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Industrial and Manufacturing Engineering

UN SDGs

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

Access to Document

10.1016/j.cej.2022.139608

Cite this

@article{cb967f0be94945abb02fad203d067500,

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",

language = "English",

volume = "452",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier",

}

TY - JOUR

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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