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A Stable Quasi‐Solid‐State Sodium–Sulfur Battery
Author(s) -
Zhou Dong,
Chen Yi,
Li Baohua,
Fan Hongbo,
Cheng Faliang,
Shanmukaraj Devaraj,
Rojo Teofilo,
Armand Michel,
Wang Guoxiu
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201805008
Subject(s) - electrolyte , battery (electricity) , anode , cathode , pentaerythritol , electrochemistry , polymer , sulfur , energy storage , chemical engineering , ionic conductivity , inorganic chemistry , materials science , chemistry , electrode , fire retardant , organic chemistry , power (physics) , physics , quantum mechanics , engineering
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 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.