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A Stable Quasi‐Solid‐State Sodium–Sulfur Battery |
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| Authors: | Dr Dong Zhou Yi Chen Prof Baohua Li Prof Hongbo Fan Prof Faliang Cheng Dr Devaraj Shanmukaraj Prof Teofilo Rojo Prof Michel Armand Prof Guoxiu Wang |
| Affiliation: | 1. Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, Australia;2. Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong, China;3. School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, Guangdong, China;4. CIC ENERGIGUNE, Parque Tecnológico de álava, Mi?ano, Spain |
| Abstract: | 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‐tris2‐(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 in situ 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 877 mA h g?1 at 0.1 C and an extended cycling stability. |
| Keywords: | gel polymer electrolytes polymeric sulfur electrodes shuttle effects sodium dendrites sodium– sulfur batteries |
