Entropy-Enhanced Multi-Cation Engineering of NASICON Cathodes for Accelerated Sodium-Ion Transport and High-Rate Performance

Entropy-Enhanced Multi-Cation Engineering of NASICON Cathodes for Accelerated Sodium-Ion Transport and High-Rate Performance | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Energy & Environmental Materials This is a preprint and has not been peer reviewed. Data may be preliminary. 13 May 2026 V1 Latest version Share on Entropy-Enhanced Multi-Cation Engineering of NASICON Cathodes for Accelerated Sodium-Ion Transport and High-Rate Performance Authors : Yejin Ra [email protected] , Ju Hyeong Kim [email protected] , Young-Hoon Kim [email protected] , Dae Soo Jung [email protected] , and Yun Chan Kang 0000-0001-5769-5761 [email protected] Authors Info & Affiliations https://doi.org/10.22541/authorea.15003282/v1 47 views 37 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Na 3V 2(PO 4) 3 (NVP) is a promising cathode material for NIBs because of its robust sodium (Na) super ionic conductor (NASICON) framework and relatively high theoretical capacity. However, the toxicity of vanadium and the limited versatility of single-cation redox chemistry have motivated compositional modification strategies to create more flexible local environments for Na + storage and transport. In this study, multi-cation substitution of Fe, Mn, and Ti at the V sites is achieved through a spray pyrolysis method, which enables homogeneous multi-element mixing at the precursor level. This uniform compositional distribution introduces entropy-enhanced local coordination environments, inducing local charge redistribution and broadened valence characteristics that modulate the Na-site energetics and facilitate Na + diffusion kinetics. As a result, the multi-cation-substituted Na 3V 1Fe 0.5Mn 0.25Ti 0.25(PO 4) 3 (NVFMTP) cathode exhibits excellent cycling stability, delivering a discharge capacity of 85.3 mA h g –1 over 1,000 cycles at 1.0C. Compared with Na 3V 1Fe 1(PO 4) and Na 3V 1Fe 0.5Mn 0.5(PO 4) 3, NVFMTP demonstrates superior Na + transport behavior, retaining 69.6% capacity of its capacity at 20C, while maintaining high Na + diffusion coefficients and structural integrity. Furthermore, in situ XRD and DFT analyses demonstrate that entropy-driven compositional disorder induces a solid-solution-type reaction mechanism and band gap narrowing, providing fundamental insights into enhanced Na + transport kinetics. Supplementary Material File (he-nvp_supporting_final_eem.docx) he-nvp_supporting_final_eem Download 4.54 MB File (battery_data_reporting_checklist_final.pdf) battery_data_reporting_checklist_final Download 1.27 MB Information & Authors Information Version history V1 Version 1 13 May 2026 Collection Energy & Environmental Materials Keywords batteries ceramics electrochemistry energy materials batteries surface and interface solar cells density functional theory electrochemistry NASICON cathodes multi-cation substitution configurational entropy structural stabilization spray pyrolysis batteries ceramics electrochemistry energy materials energy materials semiconductors solar cells light emitting materials materials science batteries environmental materials supercapacitors waste water treatment CO2 utilization batteries surface and interface solar cells density functional theory electrochemistry Authors Affiliations Yejin Ra [email protected] Korea University, Seongbuk-gu, Korea (the Republic of) View all articles by this author Ju Hyeong Kim [email protected] Korea University, Seongbuk-gu, Korea (the Republic of) View all articles by this author Young-Hoon Kim [email protected] Korea University, Seongbuk-gu, Korea (the Republic of) View all articles by this author Dae Soo Jung [email protected] Korea University, Seongbuk-gu, Korea (the Republic of) View all articles by this author Yun Chan Kang 0000-0001-5769-5761 [email protected] Korea University, Seongbuk-gu, Korea (the Republic of) View all articles by this author Metrics & Citations Metrics Article Usage 47 views 37 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Yejin Ra, Ju Hyeong Kim, Young-Hoon Kim, et al. Entropy-Enhanced Multi-Cation Engineering of NASICON Cathodes for Accelerated Sodium-Ion Transport and High-Rate Performance. Authorea . 13 May 2026. DOI: https://doi.org/10.22541/authorea.15003282/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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