Design and Construction of Sodium Polysulfides Defense System for Room‐Temperature Na–S Battery
Name
advs.201901557.pdf
Description
Published version
Size
4.89 MB
Format
Unknown
Checksum (MD5)
737baeefa3dd9b1b98e6ee61ebcadac5
Author(s)
Yang, Tingting
Guo, Bingshu
Du, Wenyan
Aslam, Muhammad Kashif
Tao, Mengli
Zhong, Wei
Chen, Yuming
Bao, Shu‐Juan
Zhang, Xuan
Xu, Maowen
Date Issued
September 2019
Journal
Advanced Science
Publisher
Wiley
Citation
Yang, T, Guo, B, Du, W, Aslam, MK, Tao, M et al. 2019. "Design and Construction of Sodium Polysulfides Defense System for Room-Temperature Na–S Battery." Advanced Science, 6 (23).
Version
Final published version
Abstract
© 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Room-temperature Na–S batteries are facing one of the most serious challenges of charge/discharge with long cycling stability due to the severe shuttle effect and volume expansion. Herein, a sodium polysulfides defense system is presented by designing and constructing the cathode-separator double barriers. In this strategy, the hollow carbon spheres are decorated with MoS2 (HCS/MoS2) as the S carrier (S@HCS/MoS2). Meanwhile, the HCS/MoS2 composite is uniformly coated on the surface of the glass fiber as the separator. During the discharge process, the MoS2 can adsorb soluble polysulfides (NaPSs) intermediates and the hollow carbon spheres can improve the conductivity of S as well as act as the reservoir for electrolyte and NaPSs, inhibiting them from entering the anode to make Na deteriorate. As a result, the cathode-separator group applied to room-temperature Na–S battery can enable a capacity of ≈1309 mAh g−1 at 0.1 C and long cycling life up to 1000 cycles at 1 C. This study provides a novel and effective way to develop durable room-temperature Na–S batteries.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1002/advs.201901557
