Optimization of the compositions of polyanionic sodium-ion battery cathode NaFe2−xVx(PO4)(SO4)2

Essehli, Rachid; Alkhateeb, Alaa; Mahmoud, Abdelfattah; Boschini, Frèdéric; Yahia, Hamdi Ben; Amin, Ruhul; Belharouak, Ilias

doi:10.1016/j.jpowsour.2020.228417

Cited by 32 publications

(20 citation statements)

References 28 publications

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“…[ 29 ] On the other hand, vanadium is toxic and expensive and therefore its large‐scale application has to be curtailed. It is feasible to choose some other metal elements to substitute vanadium element, such as Fe, [ 30 ] Ti, [ 31 ] etc. Yuk et al proposed replacing part of the vanadium element in Na 3 V 2 (PO 4 ) 3 (NVP) with low‐cost Fe to improve its cycle performance.…”

Section: Element Dopingmentioning

confidence: 99%

Mainstream Optimization Strategies for Cathode Materials of Sodium‐Ion Batteries

Yao

et al. 2022

Small Structures

115

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Sodium‐ion batteries are promising candidates for grid‐scale energy storage due to its abundance and similarities to lithium‐ion batteries, whereas the lack of ideal cathode materials limits their practical development. Apart from exploring novel materials, applying optimization strategies on existing potential cathode materials is demonstrated to be effective and efficient in improving their electrochemical properties toward their theoretical best capabilities. Reported strategies include element doping, surface coating, morphology and structure design, defect engineering, etc. Herein, focusing on oxide and polyanionic cathode materials, a comprehensive and systematic review on emerging optimization strategies is provided by discussing representative studies of each. Corresponding fundamental principles, their applicable ranges, and common influences on properties are analyzed. Finally, the perspectives on the current impediments and future directions in the field are presented.

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Section: Element Dopingmentioning

confidence: 99%

Mainstream Optimization Strategies for Cathode Materials of Sodium‐Ion Batteries

Yao

et al. 2022

Small Structures

115

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“…Moreover, the electrochemical performance of SIBs is mainly determined by the cathode material. Prussian blue analogues (Zhu et al, 2019;Du and Pang, 2021), organic compounds (Wang et al, 2014;Huang et al, 2017), polyanionic compounds (Essehli et al, 2020;Lv et al, 2021), and layered transition metal oxide (Yang and Wei, 2020;Zhao et al, 2021) as SIB cathode materials have been extensively researched. Most of them have the fatal issue of low average working voltage, which severely restricts their energy density.…”

Section: Introductionmentioning

confidence: 99%

MgO-Coated Layered Cathode Oxide With Enhanced Stability for Sodium-Ion Batteries

Xue

Bao

Yan³

et al. 2022

Front. Energy Res.

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Na0.67Ni0.33Mn0.67O2 is a prospective layered cathode material for sodium-ion batteries owing to its low cost, ease of synthesis, and high specific capacity. However, due to direct contact with electrolytes during the cycling process, the cyclic stability is not satisfied. To address this issue, magnesium oxide (MgO) surface modification was performed in this study to improve the material’s cycling properties. MgO layers of various thicknesses were successfully coated onto the cathode, and their electrochemical performances were thoroughly investigated. Among the as-prepared samples, the 2 wt% MgO-coated sample demonstrated the best rate capability and cycling stability. It had an initial reversible discharge capacity of 105 mAh g−1 in the voltage range from 2.0 to 4.5 V at 0.2 C with a high cycle retention of 81.5%. Electrochemical impedance spectroscopy (EIS) results showed that the 2 wt% MgO-coated electrode had the highest conductivity due to the smaller charge transfer resistance (Rct) value. All the test results show that the MgO modification improves the electrochemical properties of Na0.67Ni0.33Mn0.67O2 cathode material. This research could lead to the development of a promising strategy for improving the electrochemical performance of next-generation sodium-ion batteries.

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“…With the fast consumption of fossil energy resources, advanced energy storage systems need to be developed to effectively utilize renewable resources, such as wind, solar, and biomass energy. , Lithium-ion batteries (LIBs) with wide application in smart grids and electrical vehicles have become indispensable to humans; however, lithium resources are concentrated in South America and the lack of lithium resources is certain to become hidden trouble affecting the stability of battery supply and demand market. To meet the large requirements of energy storage systems (EESs) in the future, promising candidates are required to meet the characteristics of high abundance and easiness to produce. , Among them, sodium-ion batteries (SIBs) have become increasingly attractive due to their abundant terrestrial reserves and similar chemical properties to those of lithium. , At present, compared to other cathode materials including layered metal oxides, , polyanionic compounds, , which commonly show high cost and poor electrical conductivity, Prussian blue (PB) and its analogues (PBAs) have become more potential options in consideration of their low cost, nontoxicity, and open framework filled with reaction sites and ion-transport channels. The chemical formula of the kind of materials can be described as A x M y [Fe(CN) 6 ] z ·□1 – z · m H 2 O.…”

Section: Introductionmentioning

confidence: 99%

Continuous Conductive Networks Built by Prussian Blue Cubes and Mesoporous Carbon Lead to Enhanced Sodium-Ion Storage Performances

Wang

Huang

Chu

et al. 2021

ACS Appl. Mater. Interfaces

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The challenges of improving electrical conductivities and enhanced rapid dynamics are active research areas in the modification of Prussian blue (PB) and Prussian blue analogues (PBAs), which are used as excellent cathodes of sodium-ion batteries (SIBs). Herein, the terephthalic acid etched stepwise hollow bulky PB cubes and the intimate contact mesoporous carbon (CMK-3) particles with the adhered minisize PB cubes can together build continuous conductive networks. The composite (donated as N-PB@CMK) has high electrical conductivity, low resistance, and ultrahigh specific surface, which can lead to high capacitive contribution ratios. The N-PB@CMK electrode can deliver a discharge capacity of 120 mAh g–1 and maintain retention of 85.0% after cycling for 200 cycles at a current density of 100 mA g–1. Even cycling at 1 A g–1, the reversible capacity can be measured to 102 mAh g–1 and exhibit stability over a long cycle. In situ Raman spectroscopy and X-ray diffraction (XRD) patterns were further measured to illustrate the phase transition of crystal structure along with the extraction/insertion processes of Na+ ions. Especially, the assembled full cell with NaTi2(PO4)3@C anode can also show good stability and provide promising insights of applying the N-PB@CMK for energy storage systems in the future.

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Optimization of the compositions of polyanionic sodium-ion battery cathode NaFe2−xVx(PO4)(SO4)2

Cited by 32 publications

References 28 publications

Mainstream Optimization Strategies for Cathode Materials of Sodium‐Ion Batteries

Mainstream Optimization Strategies for Cathode Materials of Sodium‐Ion Batteries

MgO-Coated Layered Cathode Oxide With Enhanced Stability for Sodium-Ion Batteries

Continuous Conductive Networks Built by Prussian Blue Cubes and Mesoporous Carbon Lead to Enhanced Sodium-Ion Storage Performances

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