Li0.75Mn1.50Fe1.75(PO4)3: First alluaudite-type iron phosphate containing only Li+ as alkaline ions
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TRAD, Khiem | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CASTETS, Aurore | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | WATTIAUX, Alain | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| hal.structure.identifier | Matériaux Inorganiques | |
| dc.contributor.author | BEN AMARA, Mongi | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CARLIER, Dany | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 0022-4596 | |
| dc.description.abstractEn | A new iron phosphate Li0.75Mn1.50Fe1.75(PO4)3 has been prepared by the flux method and its structure was characterized from single crystal X-ray diffraction data. It crystallizes as an alluaudite type structure, characterized by the A(2)A(2)’A(1)A(1)’A(1)”M(1)M(2)2(PO4)3 general formula with a = 12.002(9) Å, b = 12.509(9) Å, c = 6.404(7) Å, β = 115.07(7)° in the monoclinic C2/c space group. The 3D framework consists of infinite chains of edge-sharing M(2)2O10 dimers and M(1)O6 octahedra connected by phosphate tetrahedra leading to two sets of hexagonal tunnels. The Li+ and Mn2+ ions partially occupy one of them, the other tunnel being empty. The Mössbauer spectroscopy confirmed the occurrence of only Fe3+ ions in octahedral environment. Electrochemical cycling tests in Li cells were performed using Li0.75MnII1.50FeIII1.75(PO4)3 powder as electrode material. Only a small amount of Li+ ions can be reversibility deintercalated/intercalated corresponding to a capacity as low as 30 mAh/g with a 3.2 V average voltage. Moreover, a strong polarization due to low electronic and ionic conductivities is observed. The presence of Mn2+ ions in the same tunnel as Li+ probably hinders a good Li+ ionic diffusion. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Alluaudite phosphate | |
| dc.subject.en | Single crystal | |
| dc.subject.en | DRX | |
| dc.subject.en | Mössbauer | |
| dc.subject.en | Li-ion batteries | |
| dc.title.en | Li0.75Mn1.50Fe1.75(PO4)3: First alluaudite-type iron phosphate containing only Li+ as alkaline ions | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jssc.2018.05.014 | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | Journal of Solid State Chemistry | |
| bordeaux.page | 12-17 | |
| bordeaux.volume | 265 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01811070 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01811070v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Solid%20State%20Chemistry&rft.date=2018&rft.volume=265&rft.spage=12-17&rft.epage=12-17&rft.eissn=0022-4596&rft.issn=0022-4596&rft.au=TRAD,%20Khiem&CASTETS,%20Aurore&WATTIAUX,%20Alain&DELMAS,%20Claude&BEN%20AMARA,%20Mongi&rft.genre=article |
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