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A New Cathode Material for a Li–O2 Battery Based on Lithium Superoxide

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    A New Cathode Material for a Li–O2 Battery Based on Lithium Superoxide
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    ACS Energy Letters

    Cite this: ACS Energy Lett. 2022, 7, 8, 2619–2626
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    https://doi.org/10.1021/acsenergylett.2c01191
    Published July 19, 2022
    Copyright © 2022 UChicago Argonne, LLC, Operator of Argonne National Laboratory. Published by American Chemical Society
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    Abstract

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    Li–O2 batteries suffer from large charge overpotentials due to the high charge transfer resistance of Li2O2 discharge products. A potential solution to this problem is the development of LiO2-based batteries that possess low charge overpotentials due to the lower charge transfer resistance of LiO2. In this report, IrLi nanoparticles were synthesized and implemented for the first time as a LiO2 battery cathode material. The IrLi nanoparticle synthesis was achieved by a temperature- and time-optimized thermal reaction between a precise ratio of iridium nanoparticles and lithium metal. Li–O2 batteries employing the IrLi-rGO cathodes were cycled up to 100 cycles at moderate current densities with sustained low cell charge potentials (<3.5 V). Various characterization techniques, including SEM, DEMS, TEM, Raman, and titration, were used to demonstrate the LiO2 discharge product and the absence of Li2O2. On the basis of first-principles calculations, it was concluded that the formation of crystalline LiO2 can be stabilized by epitaxial growth on the (111) facets of IrLi nanoparticles present on the cathode surface. These findings demonstrate that, in addition to the previously studied Ir3Li intermetallic, the IrLi intermetallic also provides a means by which LiO2 discharge products can be stabilized and confirms the importance of templating for the formation process.

    Copyright © 2022 UChicago Argonne, LLC, Operator of Argonne National Laboratory. Published by American Chemical Society

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsenergylett.2c01191.

    • Detailed outline of experimental procedures, a raw material analysis, a supporting IrLi material analysis, a supporting electrochemical analysis of IrLi, a Tafel analysis, a supporting discharge product analysis, a supporting DEMS analysis, and a supporting TEM analysis (PDF)

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    This article is cited by 28 publications.

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    17. Daniel Córdoba, Leandro N. Benavides, Daniel H. Murgida, Hernan B. Rodríguez, Ernesto J. Calvo. Operando detection and suppression of spurious singlet oxygen in Li–O 2 batteries. Faraday Discussions 2024, 248 , 190-209. https://doi.org/10.1039/D3FD00081H
    18. Hsien-Hau Wang, Chengji Zhang, Jing Gao, Kah Chun Lau, Samuel T. Plunkett, Moon Park, Rachid Amine, Larry A. Curtiss. Template assisted lithium superoxide growth for lithium–oxygen batteries. Faraday Discussions 2024, 248 , 48-59. https://doi.org/10.1039/D3FD00116D
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    24. Tong Liu, Siyuan Zhao, Qi Xiong, Jie Yu, Jian Wang, Gang Huang, Meng Ni, Xinbo Zhang. Reversible Discharge Products in Li–Air Batteries. Advanced Materials 2023, 35 (20) https://doi.org/10.1002/adma.202208925
    25. Zhihui Sun, Shuai Zhao, Jixiong Zhang. High-Conductive Multilayer TiOX-Ti3C2TX Electrocatalyst for Longevous Metal-Oxygen Battery under a High Rate. Batteries 2023, 9 (4) , 205. https://doi.org/10.3390/batteries9040205
    26. Shiquan Guo, Jiaona Wang, Yaxin Sun, Lichong Peng, Congju Li. Interface engineering of Co3O4/CeO2 heterostructure in-situ embedded in Co/N‑doped carbon nanofibers integrating oxygen vacancies as effective oxygen cathode catalyst for Li-O2 battery. Chemical Engineering Journal 2023, 452 , 139317. https://doi.org/10.1016/j.cej.2022.139317
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    28. Zhuojun Zhang, Xu Xiao, Peng Tan, . The mystery of Li<sub>2</sub>O<sub>2</sub> formation pathways in aprotic Li–O<sub>2</sub> batteries. JUSTC 2023, 53 (6) , 0602. https://doi.org/10.52396/JUSTC-2022-0155
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    ACS Energy Letters

    Cite this: ACS Energy Lett. 2022, 7, 8, 2619–2626
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsenergylett.2c01191
    Published July 19, 2022
    Copyright © 2022 UChicago Argonne, LLC, Operator of Argonne National Laboratory. Published by American Chemical Society
    Request reuse permissions

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