BURBANO, Mario; DUTTINE, Mathieu; BORKIEWICZ, Olaf; WATTIAUX, Alain; DEMOURGUES, Alain; SALANNE, Mathieu; GROULT, Henri; DAMBOURNET, Damien

doi:10.1021/acs.inorgchem.5b01705

Metadatos

Licencia de uso del documento

BURBANO, Mario
Réseau sur le stockage électrochimique de l'énergie [RS2E]
PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX [PHENIX]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DUTTINE, Mathieu
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

BORKIEWICZ, Olaf
X-ray Science Division [XSD]

Idioma

Article de revue

Este ítem está publicado en

Inorganic Chemistry. 2015, vol. 14, n° 19, p. 9619-9625

American Chemical Society

Resumen en inglés

Iron fluoride trihydrate can be used to prepare iron hydroxyfluoride with the hexagonal-tungsten-bronze (HTB) type structure, a potential cathode material for batteries. To understand this phase transformation, a structural description of β-FeF3·3H2O is first performed by means of DFT calculations and Mössbauer spectroscopy. The structure of this compound consists of infinite chains of [FeF6]n and [FeF2(H2O)4]n. The decomposition of FeF3·3H2O induces a collapse and condensation of these chains, which lead to the stabilization, under specific conditions, of a hydroxyfluoride network FeF3-x(OH)x with the HTB structure. The release of H2O and HF was monitored by thermal analysis and physical characterizations during the decomposition of FeF3·3H2O. An average distribution of FeF4(OH)2 distorted octahedra in HTB-FeF3-x(OH)x was obtained subsequent to the thermal hydrolysis/olation of equatorial anionic positions involving F(-) and H2O. This study provides a clear understanding of the structure and thermal properties of FeF3·3H2O, a material that can potentially bridge the recycling of pickling sludge from the steel industry by preparing battery electrodes.< Leer menos

Metadatos

Licencia de uso del documento

Anionic ordering and thermal properties of FeF3·3H2O

Idioma

Este ítem está publicado en

Resumen en inglés

DOI

Orígen

Centros de investigación