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author:

Jiao, Xuechao (Jiao, Xuechao.) [1] | Hu, Jun (Hu, Jun.) [2] | Zuo, Yinze (Zuo, Yinze.) [3] | Qi, Jing (Qi, Jing.) [4] | Yan, Wei (Yan, Wei.) [5] | Zhang, Jiujun (Zhang, Jiujun.) [6]

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Abstract:

The 'shuttle effect' of soluble lithium polysulfides (LiPSs) in lithium-sulfur (Li-S) batteries can lead to sluggish kinetics of sulfur redox reactions and rapid capacity degradation, significantly limiting the practical application of Li-S batteries on a large scale. Herein, the cascade catalysis is achieved based on a self-recovery catalyst with multiple catalytic centers through a ZnIn2S4-In2O3-ZnIn2S4 sandwich-like structure to realize the tandem redox of S8 to Li2S. Specifically, the outer ZnIn2S4 nanosheet network can preferentially adsorb S8, and the middle In2O3 acts as an adsorption mediator to ensure the adsorption and conversion of S8 to long-chain Li2S6/Li2S4, and then the inner ZnIn2S4 can further catalyze the conversions from long-chain Li2S4 to short-chain Li2S2/Li2S. Reversibly, the ZnIn2S4 is better in decreasing the energy barrier of Li2S dissolution, and further converting it into elemental sulfur (S8). During this process, the In/O and In/Zn active sites are re-exposed by alternating catalytic mode to achieve the self-recovery of active site, thereby enhancing long-term catalytic activity. This work demonstrates that cascade catalysis can be achieved by self-recovery catalysts with multiple catalytic centers for LiPSs, providing novel insights into the design of multi-functional catalysts to rationally regulate LiPSs’ redox reactions © 2023 Elsevier Ltd

Keyword:

Catalysis Catalyst activity Indium compounds Lithium compounds Lithium sulfur batteries Recovery Redox reactions Sulfur compounds Zinc compounds

Community:

  • [ 1 ] [Jiao, Xuechao]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 2 ] [Hu, Jun]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 3 ] [Zuo, Yinze]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 4 ] [Zuo, Yinze]National Laboratory of Solid State Microstructures, Nanjing University, Nanjing; 210093, China
  • [ 5 ] [Qi, Jing]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 6 ] [Yan, Wei]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Zhang, Jiujun]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China

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Source :

Nano Energy

ISSN: 2211-2855

Year: 2024

Volume: 119

1 6 . 8 0 0

JCR@2023

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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