Heterostructured Mn3O4-MnS Multi-Shelled Hollow Spheres for Enhanced Polysulfide Regulation in Lithium-Sulfur Batteries

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

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Author(s)

  • Bin Qin
  • Qun Wang
  • Weiqi Yao
  • Yifei Cai
  • Pengcheng Wang
  • Yongchun Zou
  • Xiaohang Zheng
  • Jian Cao
  • Junlei Qi
  • Wei Cai

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article numbere12475
Journal / PublicationEnergy & Environmental Materials
Volume6
Issue number6
Online published18 Jul 2022
Publication statusPublished - Nov 2023

Abstract

Constructing heterojunctions and hollow multi-shelled structures can render materials with fascinating physicochemical properties, and have been regarded as two promising strategies to overcome the severe shuttling and sluggish kinetics of polysulfide in lithium-sulfur (Li-S) batteries. However, a single strategy can only take limited effect. Modulating catalytic hosts with synergistic effects are urgently desired. Herein, Mn3O4-MnS heterogeneous multi-shelled hollow spheres are meticulously designed by controlled sulfuration of Mn2O3 hollow spheres, and then applied as advanced encapsulation hosts for Li-S batteries. Benefiting from the separated spatial confinement by hollow multi-shelled structure, ample exposed active sites and built-in electric field by heterogeneous interface, and synergistic effects between Mn3O4 (strong adsorption) and MnS (fast conversion) components, the assembled battery achieves prominent rate capability and decent cyclability (0.016% decay per cycle at 2 C, 1000 cycles). More crucially, satisfactory areal capacity reaches up to 7.1 mAh cm-2 even with high sulfur loading (8.0 mg cm-2) and lean electrolyte (E/S = 4.0 μL mg-1) conditions. This work will provide inspiration for the rational design of hollow multi-shelled heterostructure for various electrocatalysis applications.

Research Area(s)

  • electrocatalyst, heterojunction host, hollow multi-shelled structure, Li-S battery, Mn3O4-MnS, CONVERSION

Citation Format(s)

Heterostructured Mn3O4-MnS Multi-Shelled Hollow Spheres for Enhanced Polysulfide Regulation in Lithium-Sulfur Batteries. / Qin, Bin; Wang, Qun; Yao, Weiqi et al.
In: Energy & Environmental Materials, Vol. 6, No. 6, e12475, 11.2023.

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