High-Entropy NASICON Phosphates (Na.sub.3./sub.M.sub.2./sub.(PO.sub.4./sub.).sub.3./sub. and NaMPO.sub.4./sub.O.sub.x./sub., M = Ti, V, Mn, Cr, and Zr) for Sodium Electrochemistry

Wu, B.; Hou, G.; Kovalska, E.; Mazánek, V.; Marvan, P.; Liao, L.; Děkanovský, L.; Sedmidubský, D.; Marek, I.; Hervoches, Charles; Sofer, Z.

doi:https://dx.doi.org/10.1021/acs.inorgchem.1c03861

Number of the records: 1

High-Entropy NASICON Phosphates (Na.sub.3./sub.M.sub.2./sub.(PO.sub.4./sub.).sub.3./sub. and NaMPO.sub.4./sub.O.sub.x./sub., M = Ti, V, Mn, Cr, and Zr) for Sodium Electrochemistry

1.

SYSNO ASEP	0557580
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	High-Entropy NASICON Phosphates (Na₃M₂(PO₄)₃ and NaMPO₄O_x, M = Ti, V, Mn, Cr, and Zr) for Sodium Electrochemistry
Author(s)	Wu, B. (CZ) Hou, G. (CZ) Kovalska, E. (CZ) Mazánek, V. (CZ) Marvan, P. (CZ) Liao, L. (CZ) Děkanovský, L. (CZ) Sedmidubský, D. (CZ) Marek, I. (CZ) Hervoches, Charles (UJF-V)_{RID, ORCID, SAI} Sofer, Z. (CZ)
Number of authors	11
Source Title	Inorganic Chemistry. - : American Chemical Society - ISSN 0020-1669 Roč. 61, č. 9 (2022), s. 4092-4101
Number of pages	10 s.
Publication form	Print - P
Language	eng - English
Country	US - United States
Keywords	batteries ; diffractions ; transition metals
OECD category	Inorganic and nuclear chemistry
Research Infrastructure	Reactors LVR-15 and LR-0 II - 90120 - Centrum výzkumu Řež s.r.o. CANAM II - 90056 - Ústav jaderné fyziky AV ČR, v. v. i.
Method of publishing	Limited access
Institutional support	UJF-V - RVO:61389005
UT WOS	000793863700030
EID SCOPUS	85125578796
DOI	10.1021/acs.inorgchem.1c03861
Annotation	High-entropy materials, with complex compositions and unique cocktail characteristics, have recently drawn significant attention. Additionally, a family of sodium super ion conductors (NASICONs)-structured phosphates in energy storage areas shows a comprehensive application for traditional alkaline ion batteries and, in particular, solid-state electrolytes. However, there is no precedent in fabricating this kind of NASICON-type high-entropy phase. Here, we report the successful fabrication of two well-crystallized high-entropy phosphates, namely, Na-3(Ti0.2V0.2Mn0.2Cr0.2Zr0.2)(2)(PO4)(3) (HE-N3M2P3) and Na(Ti0.2V0.2Mn0.2Cr0.2Zr0.2)(2)PO4Ox (HE-NMP). The prepared materials in which the transition metals (TMs) of Ti, V, Mn, Cr, and Zr occupy the same 12c Wykoff position can form a structure analogous to R (3) over barc Na3V2(PO4)(3) that is carefully determined by X-ray diffraction, neutron diffraction, and transmission electron microscopy. Further, their performance for sodium ion batteries and sodium-based solid-state electrolytes was evaluated. The HE-N3M2P3 might exhibit a promising electrochemical performance for sodium storage in terms of its structure resembling that of Na3V2(PO4)(3). Meanwhile, the HE-NMP shows considerable electrochemical activity with numerous broad redox ranges during extraction and insertion of Na+, related to the coexistence of several TM elements. The evaluated temperature-dependent ionic conductivity for HE-NMP solid electrolyte varies from 10(-6) to 10(-5) S cm(-1) from room temperature to 398.15 K, offering high potential for energy storage applications as a new high-entropy system.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2023
Electronic address	https://doi.org/10.1021/acs.inorgchem.1c03861

Number of the records: 1