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Mendeleev Communications, 2025, Volume 35, Issue 4, Pages 393–395
DOI: https://doi.org/10.71267/mencom.7637 (Mi mendc5816) 		 
This article is cited in 2 scientific papers (total in 2 papers)

Communications

NaAlNb(PO4)3 NASICON-type phosphate with the Nb5+/Nb4+/Nb3+ multielectron redox activity on sodium intercalation

I. R. Cherkashchenkoab, R. V. Paninb, A. V. Babkinb, D. A. Novichkovb, E. V. Antipovab, N. R. Khasanovab

a Skolkovo Institute of Science and Technology, 143025 Moscow, Russian Federation
b Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
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DOI: https://doi.org/10.71267/mencom.7637
Abstract: The NASICON-structured NaAlNb(PO4)3 phosphate was synthesized via Pechini sol–gel technique. Electrochemical measurements in sodium half-cells have disclosed that NaAlNb(PO4)3 can reversibly intercalate 2Na+ ions per formula unit owing to the Nb5+/Nb4+/Nb3+ multielectron redox processes, which was confirmed by the Nb K-edge XANES measurements. Differential thermal calorimetry has revealed an excellent thermal stability of the sodiated NaAlNb(PO4)3/C electrode material up to the point of electrolyte decomposition.
Keywords: NASICON-type phosphate, sodium-ion battery, niobium multielectron redox reaction, thermal stability, sol–gel synthesis.
Funding agency Grant number
Russian Science Foundation 23-13-00071
Received: 03.10.2024
Accepted: 17.12.2024
Published: 21.05.2025
Bibliographic databases:
Document Type: Article
Language: English
Supplementary materials:
Supplementary_data_1.pdf (590.8 Kb)


Citation: I. R. Cherkashchenko, R. V. Panin, A. V. Babkin, D. A. Novichkov, E. V. Antipov, N. R. Khasanova, “NaAlNb(PO4)3 NASICON-type phosphate with the Nb5+/Nb4+/Nb3+ multielectron redox activity on sodium intercalation”, Mendeleev Commun., 35:4 (2025), 393–395
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