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Title: A self-forming composite electrolyte for solid-state sodium battery with ultra-long cycle life

Replacing organic liquid electrolyte with inorganic solid electrolytes (SE) can potentially address the inherent safety problems in conventional rechargeable batteries. Furthermore, all-solid-state batteries have been plagues by the relatively low ionic conductivity of solid electrolytes and large charge-transfer resistance resulted from solid-solid interfaces between electrode materials and solid electrolytes. Here we report a new design strategy for improving the ionic conductivity of solid electrolyte by self-forming a composite material. An optimized Na + ion conducting composite electrolyte derived from the NASICON structure was successfully synthesized, yielding ultra-high ionic conductivity of 3.4 mS cm –1 at 25°C and 14 ms cm –1 at 80°C.
 [1] ;  [2] ;  [3] ;  [3] ;  [2] ;  [2] ;  [1] ;  [2] ;  [2] ;  [1] ;  [3] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Chinese Academy of Sciences, Beijing (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Chinese Academy of Sciences (CAS), Beijing (China)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 1614-6840; R&D Project: MA453MAEA; VT1201000
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Advanced Energy Materials (Online)
Additional Journal Information:
Journal Name: Advanced Energy Materials (Online); Journal ID: ISSN 1614-6840
Research Org:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
25 ENERGY STORAGE; National Synchrotron Light Source; solid electrolyte; self-forming; ionic liquid; surface modification; solid-state batteries