About this Research Topic
Rechargeable lithium and sodium batteries attract increasing attention due to the shift in energy demands towards renewable sources. The use of these batteries in electric vehicles, large-scale grid storage, and ever-increasing portable electronic devices has accelerated the efforts to develop batteries with better safety, higher energy & power densities, and lower cost of production.
The push for better batteries calls for the exploration of environmentally benign, inexpensive, and earth-abundant materials for use in next-generation battery technologies. Accordingly, a wide variety of materials are actively explored for potential applications as electrodes and solid electrolytes. NASICON (Na Super Ionic CONductor) structured AxM2(PO4)3 (where A = Li, Na; M = V, Ti, Zr, Sc, Ge, Fe, Hf, etc.) materials are particularly interesting as this framework provide the flexibility of accommodating various cations at M site. Many compositions with NASICON-type structure exhibit high alkali-ion conductivity at room temperature, owing to the network of three-dimensional pathways for the alkali ions, enabling the use of such compositions as the electrolytes in all-solid-state batteries. At the same time, other compositions were demonstrated to be potential candidates as cathode materials in lithium and sodium-ion batteries. While significant progress on tailoring the properties of NASICON-type materials has been made, several challenges such as chemical stability against metal anodes, high interfacial resistance, anti-sintering behavior, and harsh synthesis conditions warrant further attention.
This Research Topic invites original research articles, reviews, mini-reviews, and perspectives on the latest development in NASICON-structured materials. Areas of interest could include but are not limited to:
• Rational design and facile synthesis
• Ion transport mechanisms
• Fast Li+ or Na+ conducting solid electrolytes
• Use as electrode materials in lithium and sodium batteries
• Polymer-ceramics composites
• All-solid-state batteries including Li-S and Na-S
• Mechanical behavior
Original research contributions focused on the synthesis and characterization of materials closely related with the NASICON type framework, apart from the areas listed above, are also welcome.
Keywords: NASICON, rechargeable batteries, lithium battery, sodium battery, solid-state battery
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