Pore-forming mechanisms and sodium-ion-storage performances in a porous Na3V2(PO4)3/C composite cathode

Wang, Zhaoyang; Han, Jiahuai; Wang, Dong; Liu, Lingyang; Shi, Wen-Jing; Xiong, Fangyu; Tao, Haizheng

doi:10.1039/d3dt00365e

Cited by 11 publications

(6 citation statements)

References 55 publications

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“…The cathode exhibited a reversible capacity of 109.8 mAh/g at 5 C and maintained 87.6% stability after 400 cycles (at 5 C). The synergistic heterojunction enhanced the electron mobility by reducing the scattering and collision caused by anion dopants [41].…”

Section: Nvp Cathodes By Sol-gel Methodsmentioning

confidence: 99%

Hierarchically Porous Vanadium-Based Cathode Materials for High-Performance Na-Ion Batteries

Aruchamy,

Ramasundaram,

Balasankar

et al. 2024

Batteries

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Sodium-ion batteries (SIBs) have emerged as a promising alternative to lithium-ion batteries (LIBs) in sectors requiring extensive energy storage. The abundant availability of sodium at a low cost addresses concerns associated with lithium, such as environmental contamination and limited availability. However, SIBs exhibit lower energy density and cyclic stability compared to LIBs. One of the key challenges in improving the performance of SIBs lies in the electrochemical properties of the cathode materials. Among the various cathodes utilized in SIBs, sodium vanadium phosphates (NVPs) and sodium vanadium fluorophosphates (NVPFs) are particularly advantageous. These vanadium-based cathodes offer high theoretical capacity and are cost-effective. Commercialization of SIBs with NVPF cathodes has already begun. However, the poor conductivity of these cathode materials leads to a short cycle life and inferior rate performance. Various synthesis methods have been explored to enhance the conductivity, including heteroatom doping (N, S, and Co), surface modification, the fabrication of porous nanostructures, and composite formation with conductive carbon materials. In particular, cathodes with interconnected hierarchical micro- and nano-porous morphologies have shown promise. This review focuses on the diverse synthesis methods reported for preparing hierarchically porous cathodes. With increased attention, particular emphasis has been placed on carbon composites of NVPs and NVPFs. Additionally, the synthesis of vanadium pentoxide-based cathodes is also discussed.

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Section: Nvp Cathodes By Sol-gel Methodsmentioning

confidence: 99%

Hierarchically Porous Vanadium-Based Cathode Materials for High-Performance Na-Ion Batteries

Aruchamy,

Ramasundaram,

Balasankar

et al. 2024

Batteries

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“…[166] However, the high cost of rGO is contrary to the main advantage of low-cost SIBs, so some other novel carbon sources such MWCNTs, carbon sheets and carbon fibers are employed by various researchers. [167,168] For instance, Su et al [169] synthesized hierarchical flower-like Na 3 V 2 (PO 4 ) 3 /C microspheres coated with a dense and highly conductive carbon layer derived from polyvinylpyrrolidone (PVP) addition via solvothermal method and subsequent annealing. The Na 3 V 2 (PO 4 ) 3 /C cathode demonstrated exceptional cycling stability maintaining a reversible capacity of 84.3 mAh g −1 over 10 000 cycles at 40 C. Li et al [21] reported dual carbon decorated heterostructure Na 3 V 2 O 2 (PO 4 ) 2 F@C/CNFs via solvothermal synthesis route with homogenous amorphous carbon layer wrapping NVOPF particles coupled with graphitized CNFs externally followed by post annealing treatment (Figure 9e-g).…”

Section: Surface Coatingmentioning

confidence: 99%

“…[ 166 ] However, the high cost of rGO is contrary to the main advantage of low‐cost SIBs, so some other novel carbon sources such MWCNTs, carbon sheets and carbon fibers are employed by various researchers. [ 167,168 ] For instance, Su et al. [ 169 ] synthesized hierarchical flower‐like Na 3 V 2 (PO 4 ) 3 /C microspheres coated with a dense and highly conductive carbon layer derived from polyvinylpyrrolidone (PVP) addition via solvothermal method and subsequent annealing.…”

Section: Strategies For Improving High‐performance Phosphate‐based Po...mentioning

confidence: 99%

Recent Development of Phosphate Based Polyanion Cathode Materials for Sodium‐Ion Batteries

Ahsan,

Cai,

Wang

et al. 2024

Advanced Energy Materials

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Sodium‐ion batteries (SIBs) are regarded as next‐generation secondary batteries and complement to lithium‐ion batteries (LIBs) for large‐scale electrochemical energy storage applications due to the abundant availability, even distribution, and cost‐effectiveness of raw sodium resources. The phosphate‐based polyanions stand out of various cathode material owing to their high operation voltage, stable structure, superior safety, and excellent sodium‐storage properties. The undesirable electric conductivities and specific capacities limit their large‐scale industrialization. Herein, a recent research development of phosphate‐based polyanion cathodes including orthophosphate, oxyphosphate, pyrophosphate, and mixed phosphates is thoroughly reviewed. Subsequently, the effect of modification strategies including element doping, surface coating, morphology control, and electrode design toward high‐performance cathode materials for SIBs are systematically explored. Finally, the future research directions of phosphate‐based polyanion cathodes based on electrochemical performance including reversible capacity, voltage, energy density, rate capacity, cycling stability, and commercial applications are comprehensively concluded. It is believed that current review will present instructive perspectives into developing practicable phosphate‐based polyanion cathode materials for SIBs.

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“…[5] To obtain a sufficient conductivity of the cathodes, NVP/carbon composite coatings are applied. [6][7][8] The performance of the cell strongly depends on effective properties of the composite material at the nano-scale, which-in turnare influenced by the spatial distribution of the constituents of this composite material. Optimizing these electrode materials requires a comprehensive understanding of relationships between parameters of the synthesis process, the morphology of the composite material, and the corresponding effective properties.…”

Section: Introductionmentioning

confidence: 99%

“…The main benefit of this material arises from its high energy density, cycle stability, and rate capability [5] . To obtain a sufficient conductivity of the cathodes, NVP/carbon composite coatings are applied [6–8] . The performance of the cell strongly depends on effective properties of the composite material at the nano‐scale, which–in turn–are influenced by the spatial distribution of the constituents of this composite material.…”

Section: Introductionmentioning

confidence: 99%

Stochastic 3D Modeling of Nanostructured NVP/C Active Material Particles for Sodium‐Ion Batteries

Neumann,

Philipp,

Häringer

et al. 2024

Batteries & Supercaps

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A data‐driven modeling approach is presented to quantify the influence of morphology on effective properties in nanostructured sodium vanadium phosphate Na3V2(PO4)3/ carbon composites (NVP/C), which are used as cathode material in sodium‐ion batteries. This approach is based on the combination of advanced imaging techniques, experimental nanostructure characterization and stochastic modeling of the 3D nanostructure consisting of NVP, carbon and pores. By 3D imaging and subsequent post‐processing involving image segmentation, the spatial distribution of NVP is resolved in 3D, and the spatial distribution of carbon and pores is resolved in 2D. Based on this information, a parametric stochastic model, specifically a Pluri‐Gaussian model, is calibrated to the 3D morphology of the nanostructured NVP/C particles. Model validation is performed by comparing the nanostructure of simulated NVP/C composites with image data in terms of morphological descriptors which have not been used for model calibration. Finally, the stochastic model is used for predictive simulation to quantify the effect of varying the amount of carbon while keeping the amount of NVP constant. The presented methodology opens new possibilities for a ressource‐efficient optimization of the morphology of NVP/C particles by modeling and simulation.

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Pore-forming mechanisms and sodium-ion-storage performances in a porous Na₃V₂(PO₄)₃/C composite cathode

Abstract: Na3V2(PO4)3 (NVP) is regarded as one of the most promising cathode materials for sodium ion batteries (SIBs). However, it suffers from dense bulk structure and low intrinsic electronic conductivity which...

Cited by 11 publications

References 55 publications

Hierarchically Porous Vanadium-Based Cathode Materials for High-Performance Na-Ion Batteries

Hierarchically Porous Vanadium-Based Cathode Materials for High-Performance Na-Ion Batteries

Recent Development of Phosphate Based Polyanion Cathode Materials for Sodium‐Ion Batteries

Stochastic 3D Modeling of Nanostructured NVP/C Active Material Particles for Sodium‐Ion Batteries

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