Mesoporous N-rich Carbon with Single-Ni Atoms as a Multifunctional Sulfur Host for Li-S Batteries

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

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Author(s)

  • Yunxiang Li
  • Yinxiang Zeng
  • Ye Chen
  • Shuyan Gao

Detail(s)

Original languageEnglish
Article numbere202212680
Journal / PublicationAngewandte Chemie - International Edition
Volume61
Issue number47
Online published27 Sept 2022
Publication statusPublished - 21 Nov 2022
Externally publishedYes

Abstract

Physicochemical confinement and catalytic conversion of lithium polysulfides (LiPSs) are crucial to suppress the shuttle effect and enhance the redox kinetics of lithium-sulfur (Li-S) batteries. In this study, a NH4Cl-assisted pyrolysis strategy is developed to fabricate highly mesoporous N-rich carbon (designed as NC(p)) featuring thin outer shells and porous inner networks, on which single-Ni atoms are anchored to form an excellent sulfur host (designed as Ni-NC(p)) for Li-S batteries. During pyrolysis, the pyrolytic HCl from confined NH4Cl within ZIF-8 will in situ etch ZIF-8 to produce rich mesoporous in the carbonized product NC(p). The mesoporous Ni-NC(p) enables favorable electron/ion transfer, high sulfur loading, and effective confinement of LiPSs, while the catalytic effect of single-Ni species enhances the redox kinetics of LiPSs. As a result, the sulfur cathode based on the Ni-NC(p) host delivers obviously improved Li-S battery performance with high specific capacity, good rate capability, and cycling stability. © 2022 Wiley-VCH GmbH.

Research Area(s)

  • Li-S Battery, Lithium Polysulfide, Pore Confinement, Porous Carbon, Single-Atom Catalyst

Citation Format(s)

Mesoporous N-rich Carbon with Single-Ni Atoms as a Multifunctional Sulfur Host for Li-S Batteries. / Li, Yunxiang; Zeng, Yinxiang; Chen, Ye et al.
In: Angewandte Chemie - International Edition, Vol. 61, No. 47, e202212680, 21.11.2022.

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