Critical interface between inorganic solid-state electrolyte and sodium metal |
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| Affiliation: | 1. School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCast), Nankai University, Tianjin 300350, PR China;2. University of Michigan – Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, 800 Dong Chuan Rd., Minhang District, Shanghai 200240, PR China;3. John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA;4. Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China |
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| Abstract: | With widening applications in next-generation energy storage systems, rechargeable secondary batteries with enhanced safety and energy density are imperative for technological advancements. All-solid-state sodium batteries can be a promising low-cost and high-energy-density candidate, provided that stable cycling of the energy-dense Na metal anode can be achieved. However, the interface between Na metal and solid-state electrolyte remains a challenging problem. Here we comprehensively review various physical and chemical properties of different types of sodium-based solid-state electrolytes including sodium β-alumina, Na super ionic conductors (NASICON), chalcogenides, perovskites, complex hydrides and antiperovskites, and discuss some critical common factors that affect the Na/electrolyte interface stability. We also summarize the state-of-art strategies to engineer the interface for better electrochemical performances. |
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| Keywords: | Inorganic solid-state electrolyte Interface stability Sodium metal Solid electrolyte interphase Mixed ionic electronic conducting interphase |
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