ChemInform Abstract: NaMnFe2(PO4)3 Alluaudite Phase: Synthesis, Structure, and Electrochemical Properties As Positive Electrode in Lithium and Sodium Batteries.

Trad, Khiem; Carlier, Dany; Croguennec, Laurence; Wattiaux, Alain; Amara, Mongi Ben; Delmas, Claude

doi:10.1002/chin.201049020

Cited by 9 publications

(11 citation statements)

References 1 publication

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“…S1). These active voltage values were also observed in NaMnFe 2 (PO4) 3 [31]. The excellent cycling performances of NMFP-sample could be attributed to the high structural stability of NMFP with alluaudite structure.…”

Section: Electrochemical Measurementssupporting

confidence: 61%

One-step hydrothermal synthesis and electrochemical performance of sodium-manganese-iron phosphate as cathode material for Li-ion batteries

Karegeya

Mahmoud

Vertruyen

et al. 2017

Journal of Solid State Chemistry

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A B S T R A C TThe sodium-manganese-iron phosphate Na 2 Mn 1.5 Fe 1.5 (PO 4 ) 3 (NMFP) with alluaudite structure was obtained by a one-step hydrothermal synthesis route. The physical properties and structure of this material were obtained through XRD and Mössbauer analyses. X-ray diffraction Rietveld refinements confirm a cationic distribution of Na + and presence of vacancies in A(2)', Na + and small amounts of Mn 2+ in A(1), Mn 2+ in M(1), 0.5 Mn 2+ and Fe cations (Mn 2+ ,Fe 2+ and Fe 3+ ) in M(2), leading to the structural formula Na 2 Mn(Mn 0.5 Fe 1.5 ) (PO 4 ) 3 . The particles morphology was investigated by SEM. Several reactions with different hydrothermal reaction times were attempted to design a suitable synthesis protocol of NMFP compound. The time of reaction was varied from 6 to 48 h at 220°C. The pure phase of NMFP particles was firstly obtained when the hydrothermal reaction of NMFP precursors mixture was maintained at 220°C for 6 h. When the reaction time was increased from 6 to 12, 24 and 48 h, the dandelion structure was destroyed in favor of NMFP micro-rods. The combination of NMFP (NMFP-6H, NMFP-12H, NMFP-24H and NMFP-48H) structure refinement and Mössbauer characterizations shows that the increase of the reaction time leads to the progressive increment of Fe(III) and the decrease of the crystal size. The electrochemical tests indicated that NMFP is a 3 V sodium intercalating cathode. The comparison of the discharge capacity evolution of studied NMFP electrode materials at C/5 current density shows different capacities of 48, 40, 34 and 34 mA h g −1 for NMFP-6H, NMFP-12H, NMFP-24H and NMFP-48H respectively. Interestingly, all samples show excellent capacity retention of about 99% during 50 cycles.

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Section: Electrochemical Measurementssupporting

confidence: 61%

One-step hydrothermal synthesis and electrochemical performance of sodium-manganese-iron phosphate as cathode material for Li-ion batteries

Karegeya

Mahmoud

Vertruyen

et al. 2017

Journal of Solid State Chemistry

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“…This new structure type should open up an entirely new Na 2− x M 2 (SO 4 ) 3 ( M =Mg, Ti, Mn, Co, Ni, V and VO) family of compounds as potential cathodes/anodes/solid electrolytes for further material exploration. Although NaMnFe 2 (PO 4 ) 3 compounds with alluaudite-type AA′BM 2 ( X O 4 ) 3 framework of A, A′ =partially occupied Na, B =Mn 2+ and Fe 2+ , M =Mn 3+ and Fe 3+ and X =P was previously synthesized 17 , it showed weak electrochemical reactivity. Great advantage to use (SO 4 ) 2− instead of (PO 4 ) 3− is to stabilize the nearly Na–Fe equi-amount Na 2 Fe 2 (SO 4 ) 3 compound including only Fe 2+ with partially occupied Na + sites suitable for fast Na + diffusion upon electrode reaction.…”

Section: Resultsmentioning

confidence: 99%

A 3.8-V earth-abundant sodium battery electrode

et al. 2014

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Rechargeable lithium batteries have ushered the wireless revolution over last two decades and are now matured to enable green automobiles. However, the growing concern on scarcity and large-scale applications of lithium resources have steered effort to realize sustainable sodium-ion batteries, Na and Fe being abundant and low-cost charge carrier and redox centre, respectively. However, their performance is limited owing to low operating voltage and sluggish kinetics. Here we report a hitherto-unknown material with entirely new composition and structure with the first alluaudite-type sulphate framework, Na2Fe2(SO4)3, registering the highest-ever Fe3+/Fe2+ redox potential at 3.8 V (versus Na, and hence 4.1 V versus Li) along with fast rate kinetics. Rare-metal-free Na-ion rechargeable battery system compatible with the present Li-ion battery is now in realistic scope without sacrificing high energy density and high power, and paves way for discovery of new earth-abundant sustainable cathodes for large-scale batteries.

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“…Therefore, only about 0.3 Na + can be inserted into the Na 0.67 FePO 4 crystalline structure during the charging process, resulting in the limited initial charge capacity [57]. NaMnFe 2 (PO 4 ) 3 has also been investigated, but its electrochemical performance needs to be improved [58].…”

Section: Olivine Nafepomentioning

confidence: 99%

Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms

Wang

Shanmukaraj

et al. 2018

Electrochem. Energ. Rev.

258

122

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Sodium-ion batteries have been emerging as attractive technologies for large-scale electrical energy storage and conversion, owing to the natural abundance and low cost of sodium resources. However, the development of sodium-ion batteries faces tremendous challenges, which is mainly due to the difficulty to identify appropriate cathode materials and anode materials. In this review, the research progresses on cathode and anode materials for sodium-ion batteries are comprehensively reviewed. We focus on the structural considerations for cathode materials and sodium storage mechanisms for anode materials. With the worldwide effort, high-performance sodium-ion batteries will be fully developed for practical applications.

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ChemInform Abstract: NaMnFe₂(PO₄)₃ Alluaudite Phase: Synthesis, Structure, and Electrochemical Properties As Positive Electrode in Lithium and Sodium Batteries.

Cited by 9 publications

References 1 publication

One-step hydrothermal synthesis and electrochemical performance of sodium-manganese-iron phosphate as cathode material for Li-ion batteries

One-step hydrothermal synthesis and electrochemical performance of sodium-manganese-iron phosphate as cathode material for Li-ion batteries

A 3.8-V earth-abundant sodium battery electrode

Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms

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