Sodium intercalation/de-intercalation mechanism in Na4MnV(PO4)3 cathode materials

Nisar, Umair; Shakoor, Abdul; Essehli, Rachid; Amin, Ruhul; Orayech, B.; Ahmad, Zubair; Kumar, Praveen; Kahraman, Ramazan; AlQaradawi, Siham Y.; Soliman, Ahmed B.

doi:10.1016/j.electacta.2018.09.111

Cited by 60 publications

(49 citation statements)

References 43 publications

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“…However, the relationship between the heat generation within the batteries and their electrochemical performances has not yet been well‐studied. During the past several years, the authors’ research team has focused mainly on the development of new compounds as electrode materials for both lithium and SIBs, which include crystalline α‐CrPO 4 , Alluaudite, and Nascion‐type structures …”

Section: Introductionmentioning

confidence: 99%

Temperature‐dependent Battery Performance of a Na₃V₂(PO₄)₂F₃@MWCNT Cathode and In‐situ Heat Generation on Cycling

et al. 2020

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Excellent structural stability, high operating voltage, and high capacity have made Na 3 V 2 (PO 4) 2 F 3 a promising cathode material for sodium-ion batteries. However, high-temperature battery performances and heat generation measurements have not been systematically reported yet. Carbon-coated Na 3 V 2 (PO 4) 2 F 3 @MWCNT (multi-walled carbon nanotube) samples are fabricated by a hydrothermal-assisted sol-gel method and the electrochemical performances are evaluated at three different temperatures (25, 45, and 55°C). The well-crystallized Na 3 V 2 (PO 4) 2 F 3 @MWCNT samples exhibit good cycling stability at both low and high temperatures; they deliver an initial discharge capacity of 120-125 mAhg À 1 at a 1 C rate with a retention of 53 % capacity after 1,400 cycles with 99 % columbic efficiency. The half-cell delivers a capacity of 100 mAhg À 1 even at a high rate of 10 C at room temperature. Furthermore, the Na 3 V 2 (PO 4) 2 F 3 @MWCNT samples show good long-term durability; the capacity loss is an average of 0.05 % per cycle at a 1 C rate at 55°C. Furthermore, ionic diffusivity and charge transfer resistance are evaluated as functions of state of charge, and they explain the high electrochemical performance of the Na 3 V 2 (PO 4) 2 F 3 @MWCNT samples. In-situ heat generation measurements reveal reversible results upon cycling owing to the high structural stability of the material. Excellent electrochemical performances are also demonstrated in the full-cell configuration with hard carbon as well as antimony Sb/C anodes.

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Section: Introductionmentioning

confidence: 99%

Temperature‐dependent Battery Performance of a Na₃V₂(PO₄)₂F₃@MWCNT Cathode and In‐situ Heat Generation on Cycling

et al. 2020

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“…Sodium‐ion batteries (SIBs) have emerged as a valuable replacement for the energy storage market with its low price and large‐scale availability [4–6] . Other than its abundant nature, sodium displays similar electrochemical properties with its lithium counterpart, making it an excellent substitute for lithium counterpart [6–9] . SIBs had their beginnings in high‐temperature cells like Na/NiCl 2 and Na−S, which were commercialized into grid‐scale energy storage systems (ESS) and some other applications [10–14] .…”

Section: Introductionmentioning

confidence: 99%

“…The sodium ions (Na + ) has a larger ionic radius (1.02 Å) when compared to lithium ions (Li + ) (0.76 Å), leading to inadequate performance. The performance of SIBs is also suffering from sluggish ionic transportation, the formation of undesired phases, and lack of phase stability [7,8,15,16] . Moreover, sodium has a higher standard potential than lithium and is also significantly more massive than lithium leading to lower energy densities, contributing to plague SIBs [8] …”

Section: Introductionmentioning

confidence: 99%

“…These families mainly include NaFePO 4 , [17] Na 2 FeP 2 O 7 , [18] Na 2 VP 2 O 7 , [19] Na 2 Fe 0.5 Mn 0.5 P 2 O 7 , [20] Na 4 MnV(PO 4 ) 3 , [7] Na 4 Fe 3 (PO 4 ) 2 (P 2 O 7 ) [21] and Na 3 V 2 (PO 4 ) 2 F 3 [22] . These cathode materials have been comprehensively studied throughout the years and are recommended for energy storage applications because of low synthesizing cost, the formation of stable crystal structure, enhanced thermal stability, comparatively better energy density, and improved safety [1,7,18,20,22–27] . Among the family of pyrophosphate, the Na 2 FeP 2 O 7 is a promising cathode material demonstrating a decent reversible capacity ∼90mAhg −1 , an excellent rate capability, and decent thermal stability [18] .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Performance Evaluation of Na_(2‐x)Li_xFeP₂O₇ (x=0, 0.6) Hybrid Cathodes

et al. 2020

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This study reports hybrid cathodes formation by cation substitution in which Li+ substitution has been considered for Na+ in the structure of Na(2‐x)LixFeP2O7 (x=0, 0.6) to form Na1.4Li0.6FeP2O7 cathodes. Na(2‐x)LixFeP2O7 (x=0, 0.6) cathodes were synthesized using the solid‐state synthesis technique and characterized by various methods. The structural analysis (XRD, FE‐SEM) indicates that the submicron‐sized, phase pure, and crystalline materials having irregular morphology have been developed. Moreover, Li+ substitution does not alter the triclinic parent structure of Na2FeP2O7. Thermogravimetric analysis (TGA) shows that Li+ substitution into Na2FeP2O7 improves its thermal stability up to 550 °C with only ∼5 % weight loss. The electrochemical performance of Na2FeP2O7 and Na1.4Li0.6FeP2O7 in both lithium (Li) and sodium (Na) half‐cells is investigated using different electrochemical techniques. It is noticed that Na1.4Li0.6FeP2O7 is electrochemically active both in lithium (Li) and sodium (Na) cells with promising cyclability. However, compared with Na2FeP2O7, Na1.4Li0.6FeP2O7 suffers from inferior electrochemical performance, which might be associated with the lattice distortion of Na2FeP2O7 due to Li+ substitution having a lower ionic radius than the Na+. Considering Na2FeP2O7 as a baseline material, a new hybrid Na1.4Li0.6FeP2O7 cathode has been developed, which can be used to synthesize other new cathode materials with improved performance.

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“…Nevertheless, the large size of Na + ions (1.02 vs 0.76 Å for Li + ion) can negatively affect the transport properties of ions in the batteries . Nonetheless, sodium super ion conductors (NASICON‐type) consisting of a 3D framework structure contain large enough channels and stable chemical bonds to facilitate the facile intercalation/deintercalation of Na + …”

Section: Introductionmentioning

confidence: 99%

Hollow NaTi_1.9Sn_0.1(PO₄)₃@C Nanoparticles for Anodes of Sodium‐Ion Batteries with Superior Rate and Cycling Properties

et al. 2019

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Herein, two strategies are simultaneously used to synthesize the hollow carbon‐coated nanoparticles of NaTi1.9Sn0.1(PO4)3@C (NTSP@C). The porous morphology of NTST@C is controlled through a trace amount of tin doping while selecting a fire‐new carbon source. The NTSP@C materials present a nanosized structure with a hollow morphology, exhibiting a large specific surface area of ≈71.0 m2 g−1 and a average bore diameter of ≈26.4 nm. Moreover, the carbon layer is ≈5 nm thick with a mass ratio of 6.81%. The NTSP@C sample displays an ultrastrong rate capability (128.8 mA h g−1 at 0.1 C and 101.5 mA h g−1 at 10 C at 1.5–3.0 V) and a superior cycling performance (126.3–115.8 mA h g−1 after 300 cycles at 1 C for a retention ratio of 91.7% and 101.4–87.1 mA h g−1 after 2000 cycles at 10 C for a retention ratio of 85.9%). These excellent electrochemical performances are due to the nanosized structure, unique morphology, and thin carbon layer as a conductive medium. It is clear that the NTSP@C material is a promising anode material that can be incorporated into sodium‐ion batteries to achieve superior electrochemical performance.

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Sodium intercalation/de-intercalation mechanism in Na4MnV(PO4)3 cathode materials

Cited by 60 publications

References 43 publications

Temperature‐dependent Battery Performance of a Na₃V₂(PO₄)₂F₃@MWCNT Cathode and In‐situ Heat Generation on Cycling

Temperature‐dependent Battery Performance of a Na₃V₂(PO₄)₂F₃@MWCNT Cathode and In‐situ Heat Generation on Cycling

Synthesis and Performance Evaluation of Na_(2‐x)Li_xFeP₂O₇ (x=0, 0.6) Hybrid Cathodes

Hollow NaTi_1.9Sn_0.1(PO₄)₃@C Nanoparticles for Anodes of Sodium‐Ion Batteries with Superior Rate and Cycling Properties

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Sodium intercalation/de-intercalation mechanism in Na4MnV(PO4)3 cathode materials

Cited by 60 publications

References 43 publications

Temperature‐dependent Battery Performance of a Na3V2(PO4)2F3@MWCNT Cathode and In‐situ Heat Generation on Cycling

Temperature‐dependent Battery Performance of a Na3V2(PO4)2F3@MWCNT Cathode and In‐situ Heat Generation on Cycling

Synthesis and Performance Evaluation of Na(2‐x)LixFeP2O7 (x=0, 0.6) Hybrid Cathodes

Hollow NaTi1.9Sn0.1(PO4)3@C Nanoparticles for Anodes of Sodium‐Ion Batteries with Superior Rate and Cycling Properties

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Temperature‐dependent Battery Performance of a Na₃V₂(PO₄)₂F₃@MWCNT Cathode and In‐situ Heat Generation on Cycling

Temperature‐dependent Battery Performance of a Na₃V₂(PO₄)₂F₃@MWCNT Cathode and In‐situ Heat Generation on Cycling

Synthesis and Performance Evaluation of Na_(2‐x)Li_xFeP₂O₇ (x=0, 0.6) Hybrid Cathodes

Hollow NaTi_1.9Sn_0.1(PO₄)₃@C Nanoparticles for Anodes of Sodium‐Ion Batteries with Superior Rate and Cycling Properties