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author:

Cai, Daoping (Cai, Daoping.) [1] | Zhuang, Yaxuan (Zhuang, Yaxuan.) [2] | Fei, Ban (Fei, Ban.) [3] | Zhang, Chaoqi (Zhang, Chaoqi.) [4] | Wang, Yaguang (Wang, Yaguang.) [5] | Chen, Qidi (Chen, Qidi.) [6] | Zhan, Hongbing (Zhan, Hongbing.) [7]

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EI

Abstract:

Rational design and synthesis of advanced sulfur host materials has been regarded as an effective strategy to address the critical challenges of lithium-sulfur (Li-S) batteries including shuttle effect of lithium polysulfides (LiPSs), sluggish reaction kinetics, and huge volume change of sulfur. In this work, we demonstrate the rational construction of a multifunctional sulfur host grown on carbon cloth consisting of self-supported porous VN arrays coupled with MOF-derived N-doped carbon nanotubes embedded with tiny Co nanoparticles (named CC/VN/Co@NCNTs). This unique electrode design possesses a series of advantages such as high electrical conductivity, strong physical/chemical confinement of LiPSs, favorable catalytic activity, fast reaction kinetics, effective volumetric accommodation, good mechanical stability and high sulfur loading. As expected, when evaluated as self-standing and binder-free cathode for Li-S batteries, the CC/VN/Co@NCNTs/S exhibits a high initial discharge capacity of 1130.4 mAh g−1 at 0.1C and maintains 864.1 mAh g−1 after 100 cycles, along with outstanding rate performance (625.3 mAh g−1 at 5C) and superior long-term cycling stability with a low capacity decay rate of 0.063% per cycle at 1C for 500 cycles. Moreover, the CC/VN/Co@NCNTs/S delivers high reversible capacities of 847.6, 668.3, and 581.1 mAh g−1 at 0.1C after 100 cycles at different high sulfur loadings of 2.8, 5.2, and 7.8 mg cm−2, respectively. The present work might provide an effective strategy to directly construct multifunctional sulfur host materials on current collectors for high-performance Li-S batteries. © 2021 Elsevier B.V.

Keyword:

Carbon nanotubes Catalyst activity Cobalt Decay (organic) Doping (additives) Electrodes Lithium batteries Lithium compounds Lithium sulfur batteries Mechanical stability Metal nanoparticles Reaction kinetics

Community:

  • [ 1 ] [Cai, Daoping]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 2 ] [Zhuang, Yaxuan]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 3 ] [Fei, Ban]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 4 ] [Zhang, Chaoqi]Catalonia Institute for Energy Research - IREC, Sant Adrià de Besòs, Barcelona; 08930, Spain
  • [ 5 ] [Zhang, Chaoqi]Department of Electronic and Biomedical Engineering, Universitat de Barcelona, Barcelona; 08028, Spain
  • [ 6 ] [Wang, Yaguang]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 7 ] [Chen, Qidi]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 8 ] [Zhan, Hongbing]College of Materials Science and Engineering, Fuzhou University, Fujian; 350108, China

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Source :

Chemical Engineering Journal

ISSN: 1385-8947

Year: 2022

Volume: 430

1 5 . 1

JCR@2022

1 3 . 4 0 0

JCR@2023

ESI HC Threshold:66

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 31

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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