Szczegóły publikacji
Opis bibliograficzny
Effect of reducing agents on low-temperature synthesis of nanostructured $LiFePO_{4}$ / Andrzej KULKA, Katarzyna WALCZAK, Wojciech ZAJĄC, Janina MOLENDA // Journal of Solid State Chemistry ; ISSN 0022-4596. — 2017 — vol. 253, s. 367–374. — Bibliogr. s. 373–374, Abstr. — Publikacja dostępna online od: 2017-06-23
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 107425 |
|---|---|
| Data dodania do BaDAP | 2017-09-05 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jssc.2017.06.022 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Solid State Chemistry |
Abstract
Simple co-precipitation synthesis procedure yielding nanometric LiFePO4 with enhanced electrochemical properties without any post-synthesis heat treatment is presented. XRD, SEM and TEM analysis of the obtained powders revealed platelet crystallites and well crystalized bulk structure. Effective way of decreasing amount of Fe3+ containing phases by addition of reducing agents (KI, (NH4)2S2O3, glucose and the atmosphere of 5%H2−95%Ar) during low-temperature (107 °C) synthesis is described. The traditional analytical chemistry methods or the Mӧssbauer spectroscopy methods revealed that utilization of selected reducing agents diminished Fe3+ concentration from 25 to 12 at%. The constructed cells with optimized LiFePO4 as a cathode material showed superior electrochemical performances, including high reversible capacity up to 162 mAh/g at C/10 current discharge rate, flat voltage plateau with a value close to 3.45 V vs. Li0/+.
