Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 32, Pages 10168-10172Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201805008
Keywords
gel polymer electrolytes; polymeric sulfur electrodes; shuttle effects; sodium dendrites; sodium-sulfur batteries
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Funding
- Australian Renewable Energy Agency project [ARENA 2014/RND106]
- ARC Discovery Project [DP170100436]
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Ambient-temperature sodium-sulfur (Na-S) batteries are considered a promising energy storage system due to their high theoretical energy density and low costs. However, great challenges remain in achieving a high rechargeable capacity and long cycle life. Herein we report a stable quasi-solid-state Na-S battery enabled by a poly(S-pentaerythritol tetraacrylate (PETEA))-based cathode and a (PETEA-tris[2-(acryloyloxy)ethyl] isocyanurate (THEICTA))-based gel polymer electrolyte. The polymeric sulfur electrode strongly anchors sulfur through chemical binding and inhibits the shuttle effect. Meanwhile, the insitu formed polymer electrolyte with high ionic conductivity and enhanced safety successfully stabilizes the Na anode/electrolyte interface, and simultaneously immobilizes soluble Na polysulfides. The as-developed quasi-solid-state Na-S cells exhibit a high reversible capacity of 877mAhg(-1) at 0.1C and an extended cycling stability.
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