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NaMnFe<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> alluaudite phase: synthesis, structure, and electrochemical properties as positive electrode in lithium and sodium batteries

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierMatériaux Inorganiques
dc.contributor.authorTRAD, Khiem
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARLIER-LARREGARAY, Dany
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCROGUENNEC, Laurence
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWATTIAUX, Alain
hal.structure.identifierMatériaux Inorganiques
dc.contributor.authorBEN AMARA, Mongi
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELMAS, Claude
dc.date.issued2010
dc.identifier.issn0897-4756
dc.description.abstractEnThe NaMnFe<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> alluaudite phase was prepared either by classical solid-state chemistry or by the sol−gel method. Its structure was investigated by Rietveld refinement of XRD and neutron diffraction data in order to precisely determine the cationic distribution. This 3D skeleton structure exhibits two types of 1D tunnels where the Na<sup>+</sup> ions are localized. The material obtained by the sol−gel method exhibits a composition very close to the ideal one, contrary to previous works reported in literature. This study leads us to propose the following formulation for our sample: (Na<sub>0.81</sub>)<sub>A(1)</sub>(Na<sub>0.19</sub>)<sub>A(2)′</sub>(Mn<sup>II</sup><sub>0.87</sub>Fe<sup>II</sup><sub>0.13</sub>)<sub>M(1)</sub>(Fe<sup>III</sup><sub>1.87</sub>Mn<sup>III</sup><sub>0.13</sub>)<sub>M(2)</sub>(PO<sub>4</sub>)<sub>3</sub>. The iron/manganese exchange was revealed from neutron data and was supported by Mssbauer spectroscopy (presence of small amount of Fe<sup>2+</sup> ions in the M(1) type site). The stability of the various Na<sup>+</sup> ions sites within the tunnels were studied by DFT calculations. The intercalation/deintercalation properties of NaMnFe<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> as positive electrode were tested in lithium and sodium batteries. The cycling curves exhibit a significant polarization even for the material prepared by sol−gel method. For this material, 1.5 Li<sup>+</sup> ions and electrons can be intercalated in the structure at low rate.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enNaMnFe<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> alluaudite phase: synthesis, structure, and electrochemical properties as positive electrode in lithium and sodium batteries
dc.typeArticle de revue
dc.identifier.doi10.1021/cm1015614
dc.subject.halChimie/Matériaux
bordeaux.journalChemistry of Materials
bordeaux.page5554-5562
bordeaux.volume22
bordeaux.issue19
bordeaux.peerReviewedoui
hal.identifierhal-00544528
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00544528v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Chemistry%20of%20Materials&amp;rft.date=2010&amp;rft.volume=22&amp;rft.issue=19&amp;rft.spage=5554-5562&amp;rft.epage=5554-5562&amp;rft.eissn=0897-4756&amp;rft.issn=0897-4756&amp;rft.au=TRAD,%20Khiem&amp;CARLIER-LARREGARAY,%20Dany&amp;CROGUENNEC,%20Laurence&amp;WATTIAUX,%20Alain&amp;BEN%20AMARA,%20Mongi&amp;rft.genre=article


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