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A Stable Quasi-Solid-State Sodium-Sulfur Battery.

Dong Zhou1, Yi Chen1, Baohua Li2

  • 1Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia.

Angewandte Chemie (International Ed. in English)
|June 28, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed a stable quasi-solid-state sodium-sulfur (Na-S) battery using novel polymer components. This advancement addresses key challenges, paving the way for improved energy storage solutions with high capacity and longevity.

Keywords:
gel polymer electrolytespolymeric sulfur electrodesshuttle effectssodium dendritessodium-sulfur batteries

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Sodium-sulfur (Na-S) batteries offer high theoretical energy density and low cost.
  • Challenges include low rechargeable capacity and poor cycle life.
  • Need for stable electrolytes and electrodes to mitigate polysulfide shuttle.

Purpose of the Study:

  • To develop a stable quasi-solid-state Na-S battery.
  • To improve rechargeable capacity and cycle life.
  • To address the polysulfide shuttle effect and Na anode stability.

Main Methods:

  • Utilized a poly(S-pentaerythritol tetraacrylate (PETEA))-based cathode.
  • Employed a (PETEA-tris[2-(acryloyloxy)ethyl] isocyanurate (THEICTA))-based gel polymer electrolyte.
  • In-situ formation of the polymer electrolyte to stabilize interfaces.

Main Results:

  • Achieved a high reversible capacity of 877 mAh g-1 at 0.1 C.
  • Demonstrated extended cycling stability.
  • Polymeric sulfur electrode chemically anchored sulfur, inhibiting shuttle effect.
  • In-situ formed polymer electrolyte stabilized Na anode/electrolyte interface and immobilized polysulfides.

Conclusions:

  • The developed quasi-solid-state Na-S battery exhibits enhanced performance.
  • The novel polymeric components effectively address major limitations of Na-S batteries.
  • This work presents a promising direction for advanced energy storage systems.