Homogeneous hybridization of NASICON-type cathode for enhanced sodium-ion storage

Geng, Ying; Ting, Zhang; Xu, Tingting; Mao, Wenfeng; Li, Dejun; Dai, Kun; Zhang, Jingbo; Ai, Guo

doi:10.1016/j.ensm.2022.03.044

Cited by 21 publications

(11 citation statements)

References 42 publications

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“…Through the synergistic reaction of several phases, the advantages of different materials are combined to eliminate some limitations of materials and obtain excellent electrochemical performance. Geng et al 147 finished the homogeneous hybridized Na 7 V 4 (P 2 O 7 ) 4 PO 4 (Na7VP) into the NVP (Na3VP)-based material (HNVP) with the hybridization ratios of Na3VP and Na7VP being 68.55% and 31.45% (weight ratio). As shown in Figure 13a, while Na3VP and Na7VP coexist, a tight amorphous phase exists on the crystal boundary between the two crystal regions, which will function as an in situ constructed high-speed expressway at crystal boundaries, accelerating the kinetics of sodium-ion diffusion and stabilizing the internal stress during de/intercalation of sodium ions for a long time.…”

Section: Constructing Nvp-based Heterogenous Composite Materialsmentioning

confidence: 99%

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Partial Modification Strategies of NASICON-Type Na₃V₂(PO₄)₃ Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Huang

Chen

et al. 2023

ACS Appl. Energy Mater.

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Sodium-ion batteries (SIBs) are regarded as an important substitute for lithium-ion batteries (LIBs) due to their abundant and widespread raw material resources. The choice of the cathode has a great influence on the electrochemical performance of the battery, and Na3V2(PO4)3 (NVP) is one of the most promising cathodes for SIBs. Its special NASICON (Na superionic conductor) three-dimensional structure is conducive to achieving excellent structural and thermal stability during the charging and discharging process. Moreover, it has a flat sodiation/desodiation potential plateau and rapid sodium diffusion kinetics. However, the weak intrinsic conductivity limits its further application in the market. Fortunately, there are some strategies, like doping foreign ions, modifying the carbon coating, constructing NVP-based heterogeneous composite materials, and changing the morphology of NVP particles, that are powerful approaches to solve this problem. Herein, the structure and some modification strategies (i.e., foreign ion doping, carbon coating, and construction of NVP-based heterogeneous composite materials) of NVP are carefully reviewed. Finally, we summarized this paper and explored the future development of the NVP cathode.

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Section: Constructing Nvp-based Heterogenous Composite Materialsmentioning

confidence: 99%

Section: Constructing Nvp-based Heterogenous Composite Materialsmentioning

confidence: 99%

Partial Modification Strategies of NASICON-Type Na₃V₂(PO₄)₃ Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Huang

Chen

et al. 2023

ACS Appl. Energy Mater.

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“…Most importantly, sodium has similar physical and chemical properties to lithium, and the working principle of SIBs is very similar to that of LIBs. , Until now, three traditional cathode materials, polyanionic frameworks, layered transition metal oxides, and ferrocyanide compounds, still dominate in the field of SIBs. − The open framework structure of polyanions enables them to have high structural stability, which can meet the deintercalation mechanism of Na + , and is expected to achieve ultrastable sodium-ion batteries . In particular, NASICON-type Na 3 V 2 (PO 4 ) 3 can well adapt to the rapid diffusion of Na + . − The open structure of Na 3 V 2 (PO 4 ) 3 can effectively improve the reaction kinetics of Na + with a large radius and weight during electrochemical migration. , Moreover, the strong P–O bond in Na 3 V 2 (PO 4 ) 3 ensures the high stability of the structure during electrochemical processes. − Nevertheless, such materials still need to be further studied for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Ultracapacity Properties of the Refined Structure in Na-Rich Na_3.4V₂(PO₄)₃/C as Sodium-Ion Battery Cathodes by Tapping the Na-Vacancy Potential

Cong,

Luo,

et al. 2023

ACS Sustainable Chem. Eng.

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Na 3 V 2 (PO 4 ) 3 has been attracting great interest from scholars owing to its high voltage platform and high energy storage capacity. However, its poor electronic conductivity and weak ion diffusion ability seriously restrict the application of its actual industrialization. In view of the above defects, Na 3+x V 2 (PO 4 ) 3 /C (x = 0, 0.2, 0.4, 0.6) cathode materials for sodium-ion batteries (SIBs) are prepared through a solid-phase method in this paper. The X-ray diffraction (XRD) results show that the Na-rich amount of x = 0.4 attains the upper limit of the solid solution of the Na-rich Na 3 V 2 (PO 4 ) 3 , and the "ultracapacity" effect reaches the maximum at this x value; the capacity is as high as 132.4 mAh/g, with remarkable cycle stability (96% capacity retention after 300 cycles). The results of density functional theory (DFT) calculations clearly explain that the reason for the excess sodium occupying the electrochemically active Na2 site is the reason for the ultracapacity. It is found through the electron paramagnetic resonance (EPR) test that excessive sodium caused some high-valent V to be reduced to low-valent V, which maintained the electrical balance of the crystal and the stability of the Na-rich solid solution structure. Through the X-ray absorption near edge structure (XANES) of the V element, it is found that the change of V valence during the charge and discharge process of the Na-rich Na 3 V 2 (PO 4 ) 3 solid solution is consistent with that of Na 3 V 2 (PO 4 ) 3 . Refined structural characterization by spherical aberration electron microscopy and ex situ XRD also prove that the Na-rich Na 3 V 2 (PO 4 ) 3 solid solution undergoes a phase transition during the charge−discharge process and can be reversibly recovered. These findings further prove that it is feasible to synthesize a new Na-rich Na 3 V 2 (PO 4 ) 3 solid solution with a stable structure, which makes Na 3 V 2 (PO 4 ) 3 a practical cathode material for SIBs having great potential in the future. KEYWORDS: sodium-ion batteries, cathode materials, Na 3 V 2 (PO 4 ) 3 , Na-rich, Na-vacancy

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“…Currently, searching suitable cathode and anode materials is a key for speeding up practical applications of NIBs. In recent years, various reported cathode materials (such as layered transition oxides, [2] Prussian blue, [3] polyanionic compounds [4,5] ) have exhibited relatively satisfactory performance while identifying appropriate anode is still a challenge for Na-ion full cells since commercial graphite anode cannot be directly employed as anode for NIBs owing to the extremely low specific capacity with ester-based electrolyte (35 mAh g −1 ). [6][7][8][9] To date, various anode materials including carbonaceous materials (hard carbon, soft carbon, etc.…”

Section: Introductionmentioning

confidence: 99%

Synergistically Achieving Superior Sodium Storage of Metal Selenides by Constructing N‐Doped Carbon Foams and Utilizing Cu‐Driven Replacement Reaction

Chang

Long

Bin

et al. 2023

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Metal selenides are considered as one of the most promising anode materials for Na‐ion batteries owing to high specific capacity and relatively higher electronic conductivity compared with metal sulfides or oxides. However, such anodes still suffer from huge volume change upon repeated Na+ insertion/extraction processes and simultaneously undergo severe shuttle effect of polyselenides, thus leading to poor electrochemical performance. Herein, a facile chemical‐blowing and selenization strategy to fabricate 3D interconnected hybrids built from metal selenides (MSe, M = Mn, Co, Cr, Fe, In, Ni, Zn) nanoparticles encapsulated in in situ formed N‐doped carbon foams (NCFs) is reported. Such hybrids not only provide ultrasmall active nanobuilding blocks (≈15 nm), but also efficiently anchor them inside the conductive NCFs, thus enabling both high‐efficiency utilization of active components and high structural stability. On the other hand, Cu‐driven replacement reaction is utilized for efficiently inhibiting the shuttle effect of polyselenides in ether‐based electrolyte. Benefiting from the combined merits of the unique MSe@NCFs and the utilization of the conversion of metal selenides to copper selenides, the as‐obtained hybrids (MnSe as an example) exhibit superior rate capability (386.6 mAh g−1 up to 8 A g−1) and excellent cycling stability (347.7 mAh g−1 at 4.0 A g−1 after 1200 cycles).

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Homogeneous hybridization of NASICON-type cathode for enhanced sodium-ion storage

Cited by 21 publications

References 42 publications

Partial Modification Strategies of NASICON-Type Na₃V₂(PO₄)₃ Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Partial Modification Strategies of NASICON-Type Na₃V₂(PO₄)₃ Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Ultracapacity Properties of the Refined Structure in Na-Rich Na_3.4V₂(PO₄)₃/C as Sodium-Ion Battery Cathodes by Tapping the Na-Vacancy Potential

Synergistically Achieving Superior Sodium Storage of Metal Selenides by Constructing N‐Doped Carbon Foams and Utilizing Cu‐Driven Replacement Reaction

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Homogeneous hybridization of NASICON-type cathode for enhanced sodium-ion storage

Cited by 21 publications

References 42 publications

Partial Modification Strategies of NASICON-Type Na3V2(PO4)3 Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Partial Modification Strategies of NASICON-Type Na3V2(PO4)3 Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Ultracapacity Properties of the Refined Structure in Na-Rich Na3.4V2(PO4)3/C as Sodium-Ion Battery Cathodes by Tapping the Na-Vacancy Potential

Synergistically Achieving Superior Sodium Storage of Metal Selenides by Constructing N‐Doped Carbon Foams and Utilizing Cu‐Driven Replacement Reaction

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Partial Modification Strategies of NASICON-Type Na₃V₂(PO₄)₃ Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Partial Modification Strategies of NASICON-Type Na₃V₂(PO₄)₃ Materials for Cathodes of Sodium-Ion Batteries: Progress and Perspectives

Ultracapacity Properties of the Refined Structure in Na-Rich Na_3.4V₂(PO₄)₃/C as Sodium-Ion Battery Cathodes by Tapping the Na-Vacancy Potential