Szczegóły publikacji
Opis bibliograficzny
Alluaudite-$Na_{1.47}Fe_3(PO_4)_3$: structural and electrochemical properties of potential cathode material for Na-ion Batteries / Katarzyna WALCZAK, Andrzej KULKA, Janina MOLENDA // Solid State Sciences ; ISSN 1293-2558. — 2019 — vol. 87, s. 21–26. — Bibliogr. s. 26, Abstr. — Publikacja dostępna online od: 2018-10-30. — Dod. afiliacja autorów: Centre of Energy AGH
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 118184 |
|---|---|
| Data dodania do BaDAP | 2018-11-26 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.solidstatesciences.2018.10.017 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Solid State Sciences |
Abstract
The structural and electrochemical investigation of alluaudite-NaxFe3(PO4)3 obtained by middle temperature solid-state synthesis is presented. XRD analysis with Rietveld refinement revealed contaminations for samples with x = 2.0. Reduction of the initial sodium content to x = 1.5 allowed to obtain single-phase Na1.47Fe3(PO4)3 with real x value determined by iodometric titration. SEM images and particle size distribution showed the fine-grained structure, which might have positive impact on kinetics of the charge/discharge processes. For the electrochemical properties investigation, the Na/Na+/Na1.47Fe3(PO4)3 cells were assembled. The cyclic charge/discharge tests were carried out under various current loads showing high discharge capacity values (near the theoretical value 108 mAh/g) under C/10. For further analysis the CV tests with sodium diffusion coefficient evaluation using Randles-Sevcik equation was provided. The value (∼10−14 cm2/s) allowed to state that the intercalation/deintercalation processes in alluaudite-NaxFe3(PO4)3 are diffusion-limited.
