Synthesis, Structure, and Sodium Mobility of Sodium Vanadium Nitridophosphate: A Zero-Strain and Safe High Voltage Cathode Material for Sodium-Ion Batteries

Zhang, Huang; Buchholz, Daniel; Passerini, Stefano

doi:10.3390/en10070889

Cited by 23 publications

(25 citation statements)

References 30 publications

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“…To identify structure evolution, we adopted ex‐situ XRD and accompanied refinement to explore lattice parameter change during discharge/charge. The XRD accompanied refinement has been proved as an effective method, including “zero strain” materials which has minute lattice parameter change during ion intercalation . XRD refinement results of electrode under various discharge/charge states provide more details of Na 2 TiSiO 5 lattice structural change.…”

Section: Discussionmentioning

confidence: 99%

Li/Na Ion Intercalation Process into Sodium Titanosilicate as Anode Material

Liu

Wang

et al. 2019

Batteries & Supercaps

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A natisite structured material, Na 2 TiSiO 5 , has been investigated as anode for lithium-and sodium-ion batteries. The results show that Na 2 TiSiO 5 can deliver a capacity of 260 mAh g À 1 with good reversibility when used as anode in Li-ion batteries. In contrast to the conversion reaction mechanism observed for its analogue Li 2 TiSiO 5 , a solid-solution type intercalation mechanism is found for the lithiation/delithiation process of Na 2 TiSiO 5 .Lithium intercalation occurs through a three-dimensional diffusion path after crossing an energy barrier around 1.0 eV. Sodium-ions could only migrate through a one-dimensional channel after overcoming a much higher energy barrier of 1.8 eV, which solely delivers a reversible capacity of 40 mAh g À 1 for sodium-ion storage.[a] Dr.

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Section: Discussionmentioning

confidence: 99%

Li/Na Ion Intercalation Process into Sodium Titanosilicate as Anode Material

Liu

Wang

et al. 2019

Batteries & Supercaps

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“…Ex situ XANES reveals that the electrochemical reaction involves the V 3+ /V 4+ redox couple (Figure b). And in situ XRD results suggest very small volume changes upon (de)sodiation of this material (Figure c), enabling excellent cycling performance . Na 3 V(PO 3 ) 3 N also exhibits excellent rate performance due to the open 3D framework.…”

Section: Vanadium‐based Polyanionic Compoundsmentioning

confidence: 93%

Section: Vanadium‐based Polyanionic Compoundsmentioning

confidence: 99%

Research Progress in Multielectron Reactions in Polyanionic Materials for Sodium‐Ion Batteries

Liang

Gong

et al. 2018

Small Methods

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www.advancedsciencenews.com www.small-methods.com and Co). The opportunities and critical issues in this interesting field have also been proposed and discussed for further investigations. Vanadium-Based Polyanionic CompoundsThe versatile coordinations and oxidation states of V ions enable V-containing polyanionic compositions extreme structural diversity. [22] In addition, multiple oxidation states of V (+2 -+5) in these structures might be accessed in a common voltage range (0-4.5 V). [23] These make V-based polyanionic compounds highly suitable for the realization of multielectron reactions. NASICON-Na 3 V 2 (PO 4 ) 3Na 3 V 2 (PO 4 ) 3 adopts a well-known NASICON structure that has rhombohedral phase with high-temperature R-3c symmetry and monoclinic phase with low-temperature C2/c symmetry resulting from Na-vacancy order/disorder. [24,25] Typically, the NASICON framework is built from V 2 (PO 4 ) 3 "lantern units" constructed by corner-sharing VO 6 octahedra and PO 4 tetrahedra. There are two Na sites: 6b Na(1) sites that locate between two adjacent V 2 (PO 4 ) 3 lantern units and 18e Na(2) sites that situate between two PO 4 tetrahedra, allowing multiple Na extraction and insertion and a 3D Na diffusion channel (Figure 2d). [25,26] NASICON-type materials show extremely versatile compounds like so on. Chen et al. and Jian et al. have published excellent reviews on NASICON-structured materials for energy storage. [34,35] Here, we mainly focus on the multielectron reactions of these materials. Na 3 V 2 (PO 4 ) 3 shows promising electrochemical performances: moderate voltage (3.4 V), decent capacity (117 mAh g −1 ), ultralong cycling life, and excellent rate performance due to robust structure and fast Na + ion transport in NASICON framework. [34] This compound attracts extensive attentions as one of the most promising cathode materials for SIBs. [24,26,30,31,[36][37][38][39][40][41][42][43][44][45][46][47][48] Accessibility of the Third NaThe electrochemical extraction of Na + would result in NaV 2 (PO 4 ) 3 via a two-phase reaction, which is a 1-e reaction per V ion. [38] X-ray absorption near edge structure (XANES) further proved that the valence of vanadium ion is +4 after charging to 4.0 V. [36] However, the third Na + ion in Na 3 V 2 (PO 4 ) 3 is inaccessible even charging the electrode up to 4.6 V (Figure 1a). [48] Recently, Jian et al. have determined that all Na + ions at Na(2) sites can be extracted while those at Na(1) maintain in their positions during chemical oxidation using the NO 2 BF 4 as the oxidant. [37] The seemingly impossible extraction of Na + toward V 2 (PO 4 ) 3 recalls a result reported nearly 30 years ago. [49] All the Na + ions have been chemically extracted from Na 3 V 2 (PO 4 ) 3 using Cl 2 as the oxidant to yield a V 2 (PO 4 ) 3 . It is surprising that NO 2 BF 4 cannot oxidize Na 3 V 2 (PO 4 ) 3 to V 2 (PO 4 ) 3 , since the redox potential of the NO 2 + /NO 2 redox (4.8 V) is much higher than that of the Cl 2 /Cl − redox (4.1 V) although the later one is estimated in the aqueous s...

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“…Similar results have been obtained recently. [ 217,218 ] Chou and co‐workers. also systematically investigated this material.…”

Section: Alkali‐ion Containing Composites For Sodium and Potassium Stmentioning

confidence: 99%

Designing Advanced Vanadium‐Based Materials to Achieve Electrochemically Active Multielectron Reactions in Sodium/Potassium‐Ion Batteries

Chen¹,

Liu

et al. 2020

Advanced Energy Materials

100

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Next‐generation sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs) are considered to be promising alternatives to replace current lithium‐ion batteries due to the high abundance of sodium and potassium resources. New energetic vanadium‐based compounds that undergoes multielectron reactions and demonstrate good sodium/potassium storage capability, provide new solutions for high‐performance SIBs/PIBs in terms of high energy/power density and long‐time cyclability. So far, desirable rich redox centers (V2+‐V5+), consolidated frameworks, and the high theoretical capacities of vanadium‐based compounds have been widely explored for practical applications. Rational materials design utilizing vanadium multiredox centers and the fundamental understanding of their charge‐transfer processes and mechanisms are critical in the development of high‐performance battery systems. The scientific importance and basic design strategies for high performance V‐based anode/cathode materials, structure‐function properties and state‐of‐the‐art understanding of V‐based electrode materials are herein classified and highlighted alongside their design strategies. The important role of the valence electron layer of vanadium, and the scientific advances of vanadium partitions in other electrochemical behaviors are also summarized in detail. Finally, relevant strategies and perspectives discussed in this review provide practical guidance to explore the undiscovered potentials of multi‐electron reaction relationships of not only V‐based composites, but also other types of electrode materials.

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Synthesis, Structure, and Sodium Mobility of Sodium Vanadium Nitridophosphate: A Zero-Strain and Safe High Voltage Cathode Material for Sodium-Ion Batteries

Cited by 23 publications

References 30 publications

Li/Na Ion Intercalation Process into Sodium Titanosilicate as Anode Material

Li/Na Ion Intercalation Process into Sodium Titanosilicate as Anode Material

Research Progress in Multielectron Reactions in Polyanionic Materials for Sodium‐Ion Batteries

Designing Advanced Vanadium‐Based Materials to Achieve Electrochemically Active Multielectron Reactions in Sodium/Potassium‐Ion Batteries

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