期刊
CERAMICS INTERNATIONAL
卷 47, 期 8, 页码 11156-11168出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.12.239
关键词
Nasicon; Microtube; Composite electrolyte; Sodium metal batteries; Conductivity
资金
- National Natural Science Foundation of China [51702030, 11632004, U1864208]
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power [2018B030322001]
- Opening Project of CAS Key Laboratory of Materials for Energy Conversion [O93GS11001]
- Key Program for International Science and Technology Cooperation Projects of the Ministry of Science and Technology of China [2016YFE0125900]
- National Science and Technology Major Project [2017-VII-0011-0106]
- Science and Technology Planning Project of Tianjin [20ZYJDJC00030]
- Key Program of Research and Development of Hebei Province [202030507040009]
- Fund for Innovative Research Groups of Natural Science Foundation of Hebei Province [A2020202002]
- Key Project of Natural Science Foundation of Tianjin [S20ZDF077]
The development of solid-state sodium-metal batteries faces challenges, but promising breakthroughs are on the horizon with the synthesis of Na3Zr2Si2PO12 ceramic microtubes and the development of composite electrolytes.
Under considerations of material abundance, cost, redox potential, higher performance, and safety, solid-state sodium-metal batteries hold much promise. The development of solid electrolytes with superior electrical performances for the solid-state sodium batteries is at the infant stage and still remains a challenge. Herein, we for the first time report a synthetic strategy of Na3Zr2Si2PO12 ceramic microtubes via a sol gel process with natural cotton fiber template. Moreover, an inorganic-organic composite electrolyte Na3Zr2Si2PO12 microtube/poly (ethylene oxide) (PEO)-poly (vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP)-sodium perchlorate (NaClO4)-1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide (EmimFSI) is developed. The phase, microstructure, and electrochemical properties of the Na3Zr2Si2PO12 microtubes and their composite electrolytes are systematically investigated based on X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy, electrochemical impedance spectroscopy, linear sweep voltammetry, direct-current polarization, and galvanostatic cycling. The finding implies that the characteristic Na3Zr2Si2PO12 microtubes and their composite electrolytes are promising for solid-state sodium-metal batteries.
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