The preparation of NaV1−xCrxPO4F cathode materials for sodium-ion battery

Zhuo, Haitao; Wang, Xianyou; Tang, Anping; Liu, Zhiming; Gamboa, S.A.; Sebastian, P.J.

doi:10.1016/j.jpowsour.2005.12.079

Cited by 138 publications

(110 citation statements)

References 19 publications

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“…Some other investigations showed that NaVPO 4 F also has another polymorphic phase, with a monoclinic crystal structure having space group C2/c [66][67][68], which is consistent with the related Na 3 Al 2 (PO 4 ) 2 F 2 phase. The structure of this material is made up of two [PO 4 ] tetrahedra that share two corner-oxygen atoms with two different [VO 4 F 2 ] octahedra.…”

Section: Sodium Metal Fluorophosphatessupporting

confidence: 76%

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

Wang

Shanmukaraj

et al. 2018

Electrochem. Energ. Rev.

256

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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Section: Sodium Metal Fluorophosphatessupporting

confidence: 76%

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

Wang

Shanmukaraj

et al. 2018

Electrochem. Energ. Rev.

256

122

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“…Three oxidation peaks and three corresponding reduction peaks were observed on the dQ/dV vs. voltage plots: two close low-voltage peaks at 3.7-3.8 V, and one high-voltage peak at ~4.3 V. These values are very similar to those observed in Na cells [14,18], and the voltage difference was less than 0.3 V than expected. It was established that Na + ions at the Na2 sites are less stable than those at the Na1 sites, because they are farther shifted from the stable position [16].…”

Section: Electrochemistrysupporting

confidence: 81%

Na1+yVPO4F1+y (0 ≤ y≤ 0.5) as Cathode Materials for Hybrid Na/Li Batteries

Косова

Rezepova

2017

Inorganics

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Using Rietveld-refined X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and electrochemical cycling, it was established that among sodium vanadium fluorophosphate compositions Na 1+y VPO 4 F 1+y (0 ≤ y ≤ 0.75), the single-phase material Na 1.5 VPO 4 F 1.5 or Na 3 V 2 (PO 4 ) 2 F 3 with a tetragonal structure (the P4 2 /mnm S.G.) is formed only for y = 0.5. The samples with y < 0.5 and y > 0.5 possessed different impurity phases. Na 3 V 2 (PO 4 ) 2 F 3 could be considered as a multifunctional cathode material for the fabrication of lithium-ion and sodium-ion high-energy batteries. The reversible discharge capacity of 116 mAh·g −1 was achieved upon cycling Na 3 V 2 (PO 4 ) 2 F 3 in a hybrid Na/Li cell. Decrease in discharge capacity for the other samples was in accordance with the amount of the electrochemically active phase Na 3 V 2 (PO 4 ) 2 F 3 . Na 3 V 2 (PO 4 ) 2 F 3 showed good cycleability and a high rate of performance, presumably due to operation in the mixed Na/Li electrolyte. The study of the structure and composition of charged and discharged samples, and the analysis of differential capacity curves showed a negligible Na/Li electrochemical exchange, and a predominant sodium-based cathode reaction. To increase the degree of the Na/Li electrochemical exchange in Na 3 V 2 (PO 4 ) 2 F 3 , it needs to be desodiated first in a Na cell, and then cycled in a lithium cell. In this case, the electrolyte would be enriched with the Li ions.

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“…[ 155 ] They showed that the NaVPO 4 F electrode delivers a discharge capacity of 82 mA h g −1 with an average voltage of 3.7 V. The monoclinic NaVPO 4 F electrode also exhibits electrochemical activity in Na-ion cells. [ 158 ] A discharge capacity of approximately 80 mA h g −1 was delivered with an average voltage of 3.7 V. There have been many efforts to enhance the electrochemical properties of NaVPO 4 F through doping or carbon coating; however, only limited enhancement of the cell performances was reported. [158][159][160] Two other important fl uorophosphates compounds, Na 3 (VO x ) 2 (PO 4 ) 2 F 3-2 x ( x = 0, 1), were introduced as cathode materials for NIBs.…”

Section: Fluorophosphatesmentioning

confidence: 99%

“…[ 158 ] A discharge capacity of approximately 80 mA h g −1 was delivered with an average voltage of 3.7 V. There have been many efforts to enhance the electrochemical properties of NaVPO 4 F through doping or carbon coating; however, only limited enhancement of the cell performances was reported. [158][159][160] Two other important fl uorophosphates compounds, Na 3 (VO x ) 2 (PO 4 ) 2 F 3-2 x ( x = 0, 1), were introduced as cathode materials for NIBs. Le Meins et al fi rst synthesized Na 3 V 2 (PO 4 ) 2 F 3 and reported the crystal structure with a space group of P4 2 /mnm .…”

Section: Fluorophosphatesmentioning

confidence: 99%

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Kim

Zhang

et al. 2016

Advanced Energy Materials

884

595

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Grid‐scale energy storage systems (ESSs) that can connect to sustainable energy resources have received great attention in an effort to satisfy ever‐growing energy demands. Although recent advances in Li‐ion battery (LIB) technology have increased the energy density to a level applicable to grid‐scale ESSs, the high cost of Li and transition metals have led to a search for lower‐cost battery system alternatives. Based on the abundance and accessibility of Na and its similar electrochemistry to the well‐established LIB technology, Na‐ion batteries (NIBs) have attracted significant attention as an ideal candidate for grid‐scale ESSs. Since research on NIB chemistry resurged in 2010, various positive and negative electrode materials have been synthesized and evaluated for NIBs. Nonetheless, studies on NIB chemistry are still in their infancy compared with LIB technology, and further improvements are required in terms of energy, power density, and electrochemical stability for commercialization. Most recent progress on electrode materials for NIBs, including the discovery of new electrode materials and their Na storage mechanisms, is briefly reviewed. In addition, efforts to enhance the electrochemical properties of NIB electrode materials as well as the challenges and perspectives involving these materials are discussed.

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The preparation of NaV1−xCrxPO4F cathode materials for sodium-ion battery

Cited by 138 publications

References 19 publications

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

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

Na1+yVPO4F1+y (0 ≤ y≤ 0.5) as Cathode Materials for Hybrid Na/Li Batteries

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

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