Unveiling the synergistic effect of polysulfide additive and MnO2 hollow spheres in evolving a stable cyclic performance in Li-S batteries

Herein, we demonstrate a synergistic approach involving polar-based oxide and polysulfide additives for effectively suppressing polysulfide dissolution during cycling. The MnO2 hollow spheres not only provide physical confinement for the polysulfide species but also enable strong chemical interactions between polysulfide species and oxides, while the added polysulfide furnishes a mass buffering effect and compensates for the capacity losses due to partial cathode dissolution during discharge. The capacity retentions of S/KB, S/KB/LiPS, S/KB/MnO2, and S/KB/MnO2/LiPS composite cathodes are 31%, 45%, 59%, and 91% respectively. The remarkable capacity retention of the S/KB/LiPS/MnO2 composite electrode is mainly attributed to the synergistic effect between MnO2 and polysulfide additives.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2017-08
Language
English
Keywords

LITHIUM-SULFUR BATTERIES; GRAPHENE OXIDE; HOST MATERIALS; CATHODE; CARBON; COMPOSITES

Citation

CHEMICAL COMMUNICATIONS, v.53, no.62, pp.8782 - 8785

ISSN
1359-7345
DOI
10.1039/c7cc04229a
URI
http://hdl.handle.net/10203/225592
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
  • Hit : 64
  • Download : 0
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0