An ultrastable lithium metal anode enabled by designed metal fluoride spansules

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Huadong Yuan
  • Jianwei Nai
  • He Tian
  • Zhijin Ju
  • Wenkui Zhang
  • Yujing Liu
  • Xinyong Tao

Detail(s)

Original languageEnglish
Article numbereaaz3112
Journal / PublicationScience Advances
Volume6
Issue number10
Online published6 Mar 2020
Publication statusPublished - Mar 2020
Externally publishedYes

Link(s)

Abstract

The lithium metal anode (LMA) is considered as a promising star for next-generation high-energy density batteries but is still hampered by the severe growth of uncontrollable lithium dendrites. Here, we design “spansules” made of NaMg(Mn)F3@C core@shell microstructures as the matrix for the LMA, which can offer a long-lasting release of functional ions into the electrolyte. By the assistance of cryogenic transmission electron microscopy, we reveal that an in situ-formed metal layer and a unique LiF-involved bilayer structure on the Li/electrolyte interface would be beneficial for effectively suppressing the growth of lithium dendrites. As a result, the spansule-modified anode affords a high Coulombic efficiency of 98% for over 1000 cycles at a current density of 2 mA cm−2, which is the most stable LMA reported so far. When coupling this anode with the Li[Ni0.8Co0.1Mn0.1]O2 cathode, the practical full cell further exhibits highly improved capacity retention after 500 cycles. © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science.

Citation Format(s)

An ultrastable lithium metal anode enabled by designed metal fluoride spansules. / Yuan, Huadong; Nai, Jianwei; Tian, He et al.
In: Science Advances, Vol. 6, No. 10, eaaz3112, 03.2020.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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