Hunting Sodium Dendrites in NASICON-Based Solid-State Electrolytes
Open Access
- 1 January 2021
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Energy Material Advances
Abstract
NASICON- (Na superionic conductor-) based solid-state electrolytes (SSEs) are believed to be attracting candidates for solid-state sodium batteries due to their high ionic conductivity and prospectively reliable stability. However, the poor interface compatibility and the formation of Na dendrites inhibit their practical application. Herein, we directly observed the propagation of Na dendrites through NASICON-based Na3.1Zr2Si2.1P0.9O12 SSE for the first time. Moreover, a fluorinated amorphous carbon (FAC) interfacial layer on the ceramic surface was simply developed by in situ carbonization of PVDF to improve the compatibility between Na metal and SSEs. Surprisingly, Na dendrites were effectively suppressed due to the formation of NaF in the interface when molten Na metal contacts with the FAC layer. Benefiting from the optimized interface, both the NaNa symmetric cells and Na3V2(PO4)3Na solid-state sodium batteries deliver remarkably electrochemical stability. These results offer benign reference to the maturation of NASICON-based solid-state sodium batteries.Keywords
Funding Information
- Chinese Academy of Sciences (2020006, XDA21070500)
- National Natural Science Foundation of China (51725206)
- Jianghan University (JDGD-201703)
- National Key Technologies R&D Program (2016YFB0901500)
This publication has 48 references indexed in Scilit:
- Sodium Bis(fluorosulfonyl)imide/Poly(ethylene oxide) Polymer Electrolytes for Sodium‐Ion BatteriesChemElectroChem, 2016
- Elastic Properties of Alkali Superionic Conductor Electrolytes from First Principles CalculationsJournal of the Electrochemical Society, 2015
- A Highly Reversible Room-Temperature Sodium Metal AnodeACS Central Science, 2015
- Superior Electrochemical Performance and Storage Mechanism of Na3V2(PO4)3 Cathode for Room‐Temperature Sodium‐Ion BatteriesAdvanced Energy Materials, 2012
- The Impact of Elastic Deformation on Deposition Kinetics at Lithium/Polymer InterfacesJournal of the Electrochemical Society, 2005
- Electroceramics: Characterization by Impedance SpectroscopyAdvanced Materials, 1990
- Compositional dependence of the electrochemical and structural parameters in the Nasicon system (Na1+xSixZr2P3−xO12)Solid State Ionics, 1981
- Sodium Penetration in Rapid Ion ConductorsJournal of the American Ceramic Society, 1979
- Crystal structures and crystal chemistry in the system Na1+xZr2SixP3−xO12Materials Research Bulletin, 1976
- Fast Na+-ion transport in skeleton structuresMaterials Research Bulletin, 1976