Article (Scientific journals)
Facile solvothermal synthesis of Na1.5□0.5Mn1.5Fe1.5(PO4)3: Electrochemical study as a dual electrode material for lithium-ion batteries
Karegeya, C.; Mahmoud, Abdelfattah; Hatert, Frédéric et al.
2018In Solid State Ionics, 326, p. 18-26
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Keywords :
Alluaudite; Conversion reaction; Dual electrode material; Electrochemistry; Mossbauer spectroscopy; Na1.5□0.5Mn1.5Fe1.5(PO4)3; Cathodes; Ethylene; Ethylene glycol; Lithium-ion batteries; Transition metals; Conversion reactions; Dual electrodes; Electrochemical studies; Electrochemical test; Negative electrode material; Reversible capacity; Solvothermal synthesis; Electrochemical electrodes
Abstract :
[en] Na1.5□0.5Mn1.5Fe1.5(PO4)3 (where □ denotes vacancies) microrods were obtained through a solvothermal synthesis in ethylene glycol. The combination of the XRD, Mössbauer and magnetic analyses confirm that the sodium vacancies in the Na1.5□0.5Mn1.5Fe1.5(PO4)3 structure are linked to the oxidation of Mn and Fe transition metals. The electrochemical tests have shown that Na1.5□0.5Mn1.5Fe1.5(PO4)3 is a dual electrode material for Li-ion batteries. The electrochemical study in the potential range of 1.5–4.5 V indicate that such material can be used as 3 V cathode with specific capacities of 109, 97, and 80 mAh·g−1 at current densities of 5, 10, and 20 mA·g−1, respectively. When it is tested in the potential range of 0.03–3.0 V as negative electrode material, it delivers a reversible capacity of about 170 mAh·g−1 at 200 mA·g−1 current density during >100 cycles. © 2018 Elsevier B.V.
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Karegeya, C.;  GREENMAT, CESAM, Institute of Chemistry B6, University of Liège, Liège, 4000, Belgium, Faculty of Sciences, College of Education, University of Rwanda, Kigali, 5039, Rwanda
Mahmoud, Abdelfattah  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Hatert, Frédéric  ;  Université de Liège - ULiège > Département de géologie > Minéralogie et cristallochimie
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Vertruyen, Bénédicte  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Lippens, P. E.;  Institut Charles Gerhardt, UMR 5253 CNRS, Université de Montpellier, Place Eugène Bataillon, cedex 5, Montpellier, 34095, France
Boschini, Frédéric ;  Université de Liège - ULiège > GREENMAT
Language :
English
Title :
Facile solvothermal synthesis of Na1.5□0.5Mn1.5Fe1.5(PO4)3: Electrochemical study as a dual electrode material for lithium-ion batteries
Publication date :
2018
Journal title :
Solid State Ionics
ISSN :
0167-2738
Publisher :
Elsevier B.V.
Volume :
326
Pages :
18-26
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Service public de Wallonie : Direction générale opérationnelle de l'économie, de l'emploi et de la recherche - DG06
Available on ORBi :
since 19 October 2018

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