Na3V2(PO4)2F3–SWCNT: a high voltage cathode for non-aqueous and aqueous sodium-ion batteries

Liu, Shuang; Wang, Liubin; Liu, Jian; Zhou, Meng; Nian, Qingshun; Feng, Yazhi; Tao, Zhanliang; Shao, Lianyi

doi:10.1039/c8ta09194c

Cited by 112 publications

(48 citation statements)

References 67 publications

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“…Indeed, a washing in water can be used to remove soluble and undesirable impurities formed during the synthesis, without any detrimental impact on their electrochemical performance in batteries. It is thus possible to develop aqueous electrode formulations or even to use them at the positive electrode in aqueous batteries [32,42]. The orthorhombic structural model appears as the most appropriate to describe the overall solid ≤ 2) materials obtained in our group (in this work, and by Broux et al [14]), in comparison with those reported in the literature [7,13,30].…”

Section: Discussionmentioning

confidence: 54%

Stability in water and electrochemical properties of the Na3V2(PO4)2F3 – Na3(VO)2(PO4)2F solid solution

Nguyen

Broux

Camacho

et al. 2019

Energy Storage Materials

118

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Polyanionic materials have been intensively studied as promising active materials for positive electrodes in Na-ion batteries thanks to their excellent stability upon cycling and the fast ionic mobility in their structural framework. Among them, Na3V2(PO4)2F3 and Na3(VO)2(PO4)2F are two of the most promising ones due to their high voltages for Na +-ion extraction and their high energy densities: 500 Wh.kg-1 and 495 Wh.kg-1 , respectively. Here, we study the formation mechanism as well as the stability of these phases in aqueous media and the possible use of a washing step in water in order to remove undesirable impurities formed during the synthesis. Furthermore, the origin of the extra capacity observed in the high voltage region for Na3V2(PO4)2F3 and Na3V2(PO4)2F1.5O1.5 was studied by operando X-ray absorption spectroscopy.

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Section: Discussionmentioning

confidence: 54%

Stability in water and electrochemical properties of the Na3V2(PO4)2F3 – Na3(VO)2(PO4)2F solid solution

Nguyen

Broux

Camacho

et al. 2019

Energy Storage Materials

118

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“…that extraction of over two Na + from per electroactive formula unit when both NVPF/C and NVPF/C@3DG are charged to 4.5 V, similar to the previously reported Na 3 V 2 (PO 4 ) 2 F 3 . [35,40,42,53,54,[56][57][58]63] However, the initial discharge capacities of NVPF/C and NVPF/ C@3DG are 119 and 123.6 mAh g À 1 , respectively, which approximate the theoretical capacity of 128 mAh g À 1 for Na 3 V 2 (PO 4 ) 2 F 3 when two sodium ions are reversibly extracted from or inserted into per Na 3 V 2 (PO 4 ) 2 F 3 formula unit. This initial discharge capacity of NVPF/C@3DG is larger than those of Na 3 V 2 (PO 4 ) 2 F 3 / C [53,57] and Na 3 V 2 (PO 4 ) 2 F 3 @C/CNTs [40,54,57] at the same current rate.…”

Section: Resultsmentioning

confidence: 86%

Dually Decorated Na₃V₂(PO₄)₂F₃ by Carbon and 3D Graphene as Cathode Material for Sodium‐Ion Batteries with High Energy and Power Densities

Cheng

Xiao

et al. 2020

ChemElectroChem

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The dually decorated Na 3 V 2 (PO 4) 2 F 3 by in-situ formed carbon and three-dimensional graphene (NVPF/C@3DG) is prepared via two hydrothermal steps and a high-temperature calcination. Benefiting from the high electronic conductivity of carbon and 3DG, high surface area and the resulted high diffusion coefficients of Na + , NVPF/C@3DG displays superior electrochemical performance to the control NVPF/C. Between 2.5 and 4.5 V (vs. Na + /Na), NVPF/C@3DG presents the initial discharge capacity of 123.6 mAh g À 1 at 0.2 C (25.6 mA g À 1) and capacity retention of 92.1 % after 60 cycles, while NVPF/C shows initial discharge capacity of 119 mAh g À 1 and capacity retention of 84.1 % under the identical test conditions. Even at 15 C, the initial discharge capacity and capacity retention after 1000 cycles of NVPF/C@3DG are as high as 91.2 mAh g À 1 and 82.9 %, respectively, much better than the initial discharge capacity of 71.2 mAh g À 1 and the corresponding capacity retention of 76.4 % for NVPF/C, respectively.

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“…In addition, Mn-based oxides (γ-MnO 2 ), [112] TMDs (MoS 2 , [80] Na 0.14 TiS 2 , [61] VS 2 [81] ), and other materials such as MoO 3 [79] also have been proved to be the electroactive hosts for Zn 2+ insertion/extraction. Besides that, owing to the open framework structure, PIBs materials such as CoFe(CN) 6 , [73] CuFe(CN) 6 , [113] and NiFe(CN) 6 , [114] as well as the NASICON-type phosphates materials such as Na 3 V 2 (PO 4 ) 3 , [115] Na 3 V 2 (PO 4 ) 2 F 3 , [116] and LiFePO 4 , [82] also have been demonstrated to be allowed for the fast Zn 2+ diffusion through the 3D pathways.…”

Section: Zn 2+ Insertion/extraction Mechanismmentioning

confidence: 99%

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Yong

Wang

et al. 2020

Advanced Energy Materials

214

140

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have also greatly aroused the positive exploration of alternative LIB technologies in recent years. [44] In contrast to the flammable organic electrolyte in LIBs, the aqueous one exhibits lower cost, higher safety, and especially the superior ionic conductivity, which is generally two orders of magnitude higher than that of the organic system. [9,10] All those unparalleled advantages would make the aqueous battery technologies to be the promising candidates in the future. [11] Rechargeable aqueous zinc-ion batteries (AZIBs), which is mainly composed of zinc metal anode, zinc salt-based aqueous electrolyte, and Zn 2+ host cathode, hold the great promise for energy storage applications in very recent years. [12,13] Compared with nonaqueous alkali-ion batteries, the use of cheap and high ambient stable zinc metal anode and inexpensive aqueous electrolyte with superior ionic conductivity (Figure 1a) would make such type of battery to be one of the most promising commercial candidates in the future market. [14-17] To date, extensive studies have been reported for AZIBs, and relating publications have dramatically increased especially in these two years, as shown in Figure 1b. However, the insufficient energy density seems to become the bottleneck that hinder their practical applications at current status. [4,5,18] Such issue could be ascribed to the narrow operating voltage of aqueous electrolyte, insufficient electrochemical performance of cathode materials, and Zn anode. [13,19,20] Besides, the influence of other components such as separator and collector also should be considered to some extent. [20,21] Among them, the studies of widening operating voltage of electrolyte and the optimization of other components only received less attention, which still remain at the early stage. [22,23] On the contrary, more attentions were paid to the electrochemical performance tuning of electrode materials. [24-26] Besides, considering the fixed operating voltage of Zn metal anode, the modification of cathode materials seems to provide more possibilities to effectively improve the energy density of AZIBs, owing to their rich material systems. [20,26,27] Under these considerations, the rational design of advanced cathodes is expected to be a preferential task to develop. Up to now, many types of materials have been exploited as cathode candidates and applied for AZIBs, however, those Rechargeable aqueous zinc-ion batteries (AZIBs) have attracted extensive attention and are considered to be promising energy storage devices, owing to their low cost, eco-friendliness, and high security. However, insufficient energy density has become the bottleneck for practical applications, which is greatly influenced by their cathodes and makes the exploration of high-performance cathodes still a great challenge. This review underscores the recent advances in the rational design of advanced cathodes for AZIBs. The review starts with a brief summary and evaluation of cathode material systems, as well as the introduction of proposed storage mechani...

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Na₃V₂(PO₄)₂F₃–SWCNT: a high voltage cathode for non-aqueous and aqueous sodium-ion batteries

Abstract: Due to the merits of low cost, safety, environmental friendliness, and abundant sodium reserves, non-aqueous and aqueous sodium-ion batteries are wonderful alternatives for large-scale energy storage.

Cited by 112 publications

References 67 publications

Stability in water and electrochemical properties of the Na3V2(PO4)2F3 – Na3(VO)2(PO4)2F solid solution

Stability in water and electrochemical properties of the Na3V2(PO4)2F3 – Na3(VO)2(PO4)2F solid solution

Dually Decorated Na₃V₂(PO₄)₂F₃ by Carbon and 3D Graphene as Cathode Material for Sodium‐Ion Batteries with High Energy and Power Densities

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

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Na3V2(PO4)2F3–SWCNT: a high voltage cathode for non-aqueous and aqueous sodium-ion batteries

Abstract: Due to the merits of low cost, safety, environmental friendliness, and abundant sodium reserves, non-aqueous and aqueous sodium-ion batteries are wonderful alternatives for large-scale energy storage.

Cited by 112 publications

References 67 publications

Stability in water and electrochemical properties of the Na3V2(PO4)2F3 – Na3(VO)2(PO4)2F solid solution

Stability in water and electrochemical properties of the Na3V2(PO4)2F3 – Na3(VO)2(PO4)2F solid solution

Dually Decorated Na3V2(PO4)2F3 by Carbon and 3D Graphene as Cathode Material for Sodium‐Ion Batteries with High Energy and Power Densities

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Contact Info

Product

Resources

About

Na₃V₂(PO₄)₂F₃–SWCNT: a high voltage cathode for non-aqueous and aqueous sodium-ion batteries

Dually Decorated Na₃V₂(PO₄)₂F₃ by Carbon and 3D Graphene as Cathode Material for Sodium‐Ion Batteries with High Energy and Power Densities