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SnCo Nanoalloy/Graphene Anode Constructed by Microfluidic-Assisted Nanoprecipitation for Potassium-Ion Batteries

  • Guanjian Nie
    Guanjian Nie
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    School of Materials Science & Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Guanjian Nie
  • Zhuonan Huang
    Zhuonan Huang
    College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
  • Shukai Ding*
    Shukai Ding
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    *Email: [email protected]
    More by Shukai Ding
  • Xiaodong Hao*
    Xiaodong Hao
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    *Email: [email protected]
    More by Xiaodong Hao
  • Guoquan Suo
    Guoquan Suo
    School of Materials Science & Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Guoquan Suo
  • Di Han
    Di Han
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    School of Materials Science & Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Di Han
  • Yang Xu
    Yang Xu
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    School of Materials Science & Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Yang Xu
  • Yingjun Yang
    Yingjun Yang
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Yingjun Yang
  • Wenqi Zhao
    Wenqi Zhao
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Wenqi Zhao
  • Qingmei Su
    Qingmei Su
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Qingmei Su
  • Bingshe Xu
    Bingshe Xu
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    More by Bingshe Xu
  • Gaohui Du*
    Gaohui Du
    Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    *Email: [email protected]
    More by Gaohui Du
  • , and 
  • Christophe A. Serra*
    Christophe A. Serra
    Université de Strasbourg, CNRS, ICS UPR 22, Strasbourg F-67000, France
    *Email: [email protected]
Cite this: ACS Appl. Nano Mater. 2022, 5, 2, 2616–2625
Publication Date (Web):February 8, 2022
https://doi.org/10.1021/acsanm.1c04285
Copyright © 2022 American Chemical Society

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    Abstract

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    Potassium-ion batteries have attracted substantial interest due to abundant resources and comparable electrochemical performance with lithium-ion batteries. Although plenty of graphene-based materials with ultrahigh performance have been designed, in practice, the dendrite growth induced by the capacitive-dominated potassium storage mechanism and the poor repeatability resulting from the complicated process are worrisome. To address these issues, it is envisaged that embedding SnCo nanoalloys in a graphene nanosheet matrix (SnCo NAs/G) can be an effective strategy for the following two reasons: (1) The embedded SnCo NAs are responsible for expanding the interlayer space and facilitating the potassium-ion diffusion in a graphene nanosheet matrix and (2) the combination of the microfluidic technology and the organic molecule confinement reaction endows the repeatability and large-scale production. As a result, the SnCo NAs/G-L anode is prepared with a low content of SnCo NAs (9.16 wt %). It shows advantages in the electrochemical performance as compared to the graphite anode. A reversible specific capacity of 165 mA h g–1 at 50 mA g–1 over 100 cycles is exhibited by SnCo NAs/G-L. It has a retention capacity of 179 mA h g–1, that is, 78.8% is recovered after charging at 500 mA g–1. Moreover, the intercalation reaction as the dominant potassium storage mechanism is beneficial for avoiding the safety problems arising from potassium dendrite growth. More interestingly, graphite-based composites constructed by the microfluidic technology successfully prove the high potential for large-scale production.

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsanm.1c04285.

    • Raman spectra of SnCo NAs/G-L, Sn NAs/G-H, and the pure graphene nanosheet matrix; XPS pattern, TGA curve, and the calculated Sn content of SnCo NAs/G-L; XRD pattern of SnCo NAs/G-L after calcination in air; galvanostatic discharge/charge profile of the graphene nanosheet matrix; formula for calculation of the contribution of the capacitive-controlled process and the diffusion-controlled process; and SnCo NAs of SnCo NAs/G-L after discharging at 50 cycles characterized by the XRD pattern (PDF)

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    Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

    Cited By

    This article is cited by 3 publications.

    1. Liping Si, Jianyi Wang, Menghui Chen, Kaibin Chen, Zhida Chen, Zicong Lu, You Zhang, Yongzheng Zhang, Haiyang Liu. Stable Solid Electrolyte Interface Achieved by Separator Surface Modification for High-Performance Anode-free Potassium Metal Batteries. ACS Applied Energy Materials 2023, 6 (1) , 326-333. https://doi.org/10.1021/acsaem.2c03032
    2. Yu Huang, Rizwan Haider, Sunjie Xu, Kanghong Liu, Zi-Feng Ma, Xianxia Yuan. Recent Progress of Novel Non-Carbon Anode Materials for Potassium-Ion Battery. Energy Storage Materials 2022, 51 , 327-360. https://doi.org/10.1016/j.ensm.2022.06.046
    3. Liping Si, Jianyi Wang, Xijun Xu. Reduced Graphene Oxide-Coated Separator to Activate Dead Potassium for Efficient Potassium Batteries. Materials 2022, 15 (16) , 5505. https://doi.org/10.3390/ma15165505

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