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author:

Huang, L. (Huang, L..) [1] | Guan, T. (Guan, T..) [2] | Su, H. (Su, H..) [3] | Zhong, Y. (Zhong, Y..) [4] | Cao, F. (Cao, F..) [5] | Zhang, Y. (Zhang, Y..) [6] | Xia, X. (Xia, X..) [7] | Wang, X. (Wang, X..) [8] | Bao, N. (Bao, N..) [9] | Tu, J. (Tu, J..) [10]

Indexed by:

Scopus

Abstract:

Flexible lithium sulfur batteries with high energy density and good mechanical flexibility are highly desirable. Here, we report a synergistic interface bonding enhancement strategy to construct flexible fiber-shaped composite cathodes, in which polypyrrole@sulfur (PPy@S) nanospheres are homogeneously implanted into the built-in cavity of self-assembled reduced graphene oxide fibers (rGOFs) by a facile microfluidic assembly method. In this architecture, sulfur nanospheres and lithium polysulfides are synergistically hosted by carbon and polymer interface, which work together to provide enhanced interface chemical bonding to endow the cathode with good adsorption ability, fast reaction kinetics, and excellent mechanical flexibility. Consequently, the PPy@S/rGOFs cathode shows enhanced electrochemical performance and high-rate capability. COMSOL Multiphysics simulations and density functional theory (DFT) calculations are conducted to elucidate the enhanced electrochemical performance. In addition, a flexible Li−S pouch cell is assembled and delivers a high areal capacity of 5.8 mAh cm−2 at 0.2 A g−1. Our work offers a new strategy for preparation of advanced cathodes for flexible batteries. © 2022 Wiley-VCH GmbH.

Keyword:

Cathode Graphene Fibers Lithium-Sulfur Batteries Polypyrrole Sulfur Nanospheres

Community:

  • [ 1 ] [Huang, L.]State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China
  • [ 2 ] [Guan, T.]State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Jiangsu, Nanjing, 210009, China
  • [ 3 ] [Su, H.]State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China
  • [ 4 ] [Zhong, Y.]State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China
  • [ 5 ] [Cao, F.]Department of Engineering Technology, Huzhou College, Huzhou, 313000, China
  • [ 6 ] [Zhang, Y.]Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu, 611371, China
  • [ 7 ] [Xia, X.]State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China
  • [ 8 ] [Xia, X.]School of Materials Science & Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
  • [ 9 ] [Xia, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
  • [ 10 ] [Wang, X.]State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China
  • [ 11 ] [Bao, N.]State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Jiangsu, Nanjing, 210009, China
  • [ 12 ] [Tu, J.]State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China

Reprint 's Address:

  • [Xia, X.]State Key Laboratory of Silicon Materials, China;;[Bao, N.]State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu, China;;[Zhang, Y.]Institute of Fundamental and Frontier Science, China

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Source :

Angewandte Chemie - International Edition

ISSN: 1433-7851

Year: 2022

Issue: 44

Volume: 61

1 6 . 6

JCR@2022

1 6 . 1 0 0

JCR@2023

ESI HC Threshold:74

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 77

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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