Low‐Cost Polyanion‐Type Cathode Materials for Sodium‐Ion Battery

Song, Zijing; Liu, Rui; Liu, Wei-Di; Chen, Yanan; Hu, Wenbin

doi:10.1002/aesr.202300102

Cited by 6 publications

(1 citation statement)

References 107 publications

(184 reference statements)

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“…The consumption of traditional fossil fuels inevitably results in an energy crisis and environmental contamination, requiring robust development of clean and renewable energy sources. − In recent years, electrochemical energy storage has become a crucial tool for establishing new energy systems and facilitating energy transformation. − Sodium-ion batteries (SIBs) exhibit similar energy storage mechanisms and enhanced safety compared to lithium-ion batteries. − Moreover, the costs of energy storage power stations will be substantially diminished owing to the exceedingly widespread sodium source on Earth. − However, developing cathode materials that possess comprehensive electrochemical performance poses a significant challenge in SIBs. − …”

Section: Introductionmentioning

confidence: 99%

Accelerating the Phase Formation Kinetics of Alluaudite Sodium Iron Sulfate Cathodes via Ultrafast Thermal Shock

Liu,

Han,

Song

et al. 2024

ACS Appl. Mater. Interfaces

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Alluaudite sodium iron sulfate (NFS) exhibits great potential for use in sodium-ion battery cathodes due to its elevated operating potential and abundant element reserves. However, conventional solid-state methods demonstrate a low heating/ cooling rate and sluggish reaction kinetics, requiring a long thermal treatment to effectively fabricate NFS cathodes. Herein, we propose a thermal shock (TS) strategy to synthesize alluaudite sodium iron sulfate cathodes using either hydrous or anhydrous raw materials. The analysis of the phase formation process reveals that TS treatment can significantly facilitate the removal of crystal water and decomposition of the intermediate phase Na 2 Fe(SO 4 ) 2 in the hydrous precursor. In the case of the anhydrous precursor, the kinetics of the combination reaction between Na 2 SO 4 and FeSO 4 can be also accelerated by TS treatment. Consequently, pure NFS phase formation can be completed after a substantially shorter time of post-sintering, thereby saving significant time and energy. The TS-treated NFS cathode derived from hydrous precursor exhibits higher retention after 200 cycles at 1C and better rate capability than the counterpart prepared by conventional long-term tube furnace sintering, demonstrating the great potential of this novel strategy.

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Section: Introductionmentioning

confidence: 99%

Accelerating the Phase Formation Kinetics of Alluaudite Sodium Iron Sulfate Cathodes via Ultrafast Thermal Shock

Liu,

Han,

Song

et al. 2024

ACS Appl. Mater. Interfaces

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Ultrafast Synthesis of Large‐Sized and Conductive Na₃V₂(PO₄)₂F₃ Simultaneously Approaches High Tap Density, Rate and Cycling Capability

Song,

Liu,

Guo

et al. 2024

Adv Funct Materials

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The Na3V2(PO4)2F3 (NVPF) cathode material is usually nano‐sized particles exhibiting low tap density, high specific surface area, correspondingly low volume energy density, and cycle stability of the sodium‐ion batteries (SIBs). Herein, a high‐temperature shock (HTS) strategy is proposed to synthesize NVPF (HTS‐NVPF) with uniform conducting network and high tap density. During a typical HTS process (heating rate of 1100 °C s−1 for 10 s), the precursors rapidly crystallize and form large‐sized and dense particles. The tight connection between particles not only enhances their contact with carbon layers, but also reduces the specific surface area that inhibits side reactions between the interfaces and the electrolyte. Besides, ultrafast synthesis of NVPF reduces the F loss and amount of Na3V2(PO4)3 impurities, which improve cycling capability. The HTS‐NVPF demonstrates a high energy density of 413.4 Wh kg−1 and an ultra‐high specific capacity of 103.4 mAh g−1 at 10 C as well as 84.2% capacity retention after 1000 cycles. In addition, the excellent temperature adaptability of HTS‐NVPF (−45–55 °C) and remarkable electrochemical properties of NVPF||HC full cell demonstrate extreme competitiveness in commercial SIBs. Therefore, the HTS technique is considered to be a high‐efficiency strategy to synthetize NVPF and is expected to prepare other cathode materials.

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Optimization Strategies of Na3V2(PO4)3 Cathode Materials for Sodium-Ion Batteries

Hu,

Li,

Liang

et al. 2024

Nano-Micro Lett.

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Na3V2(PO4)3 (NVP) has garnered great attentions as a prospective cathode material for sodium-ion batteries (SIBs) by virtue of its decent theoretical capacity, superior ion conductivity and high structural stability. However, the inherently poor electronic conductivity and sluggish sodium-ion diffusion kinetics of NVP material give rise to inferior rate performance and unsatisfactory energy density, which strictly confine its further application in SIBs. Thus, it is of significance to boost the sodium storage performance of NVP cathode material. Up to now, many methods have been developed to optimize the electrochemical performance of NVP cathode material. In this review, the latest advances in optimization strategies for improving the electrochemical performance of NVP cathode material are well summarized and discussed, including carbon coating or modification, foreign-ion doping or substitution and nanostructure and morphology design. The foreign-ion doping or substitution is highlighted, involving Na, V, and PO43− sites, which include single-site doping, multiple-site doping, single-ion doping, multiple-ion doping and so on. Furthermore, the challenges and prospects of high-performance NVP cathode material are also put forward. It is believed that this review can provide a useful reference for designing and developing high-performance NVP cathode material toward the large-scale application in SIBs.

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Low‐Cost Polyanion‐Type Cathode Materials for Sodium‐Ion Battery

Cited by 6 publications

References 107 publications

Accelerating the Phase Formation Kinetics of Alluaudite Sodium Iron Sulfate Cathodes via Ultrafast Thermal Shock

Accelerating the Phase Formation Kinetics of Alluaudite Sodium Iron Sulfate Cathodes via Ultrafast Thermal Shock

Ultrafast Synthesis of Large‐Sized and Conductive Na₃V₂(PO₄)₂F₃ Simultaneously Approaches High Tap Density, Rate and Cycling Capability

Optimization Strategies of Na3V2(PO4)3 Cathode Materials for Sodium-Ion Batteries

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Low‐Cost Polyanion‐Type Cathode Materials for Sodium‐Ion Battery

Cited by 6 publications

References 107 publications

Accelerating the Phase Formation Kinetics of Alluaudite Sodium Iron Sulfate Cathodes via Ultrafast Thermal Shock

Accelerating the Phase Formation Kinetics of Alluaudite Sodium Iron Sulfate Cathodes via Ultrafast Thermal Shock

Ultrafast Synthesis of Large‐Sized and Conductive Na3V2(PO4)2F3 Simultaneously Approaches High Tap Density, Rate and Cycling Capability

Optimization Strategies of Na3V2(PO4)3 Cathode Materials for Sodium-Ion Batteries

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Ultrafast Synthesis of Large‐Sized and Conductive Na₃V₂(PO₄)₂F₃ Simultaneously Approaches High Tap Density, Rate and Cycling Capability