Ionic liquid electrolytes supporting high energy density in sodium-ion batteries based on sodium vanadium phosphate composites†,Chemical Communications

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Ionic liquid electrolytes supporting high energy density in sodium-ion batteries based on sodium vanadium phosphate composites†
Chemical Communications ( IF 4.3 ) Pub Date : 2018-03-14 00:00:00 , DOI: 10.1039/c8cc00365c
C. V. Manohar _{1,

2,

3,

4,

5} , Tiago Correia Mendes _{6,

7,

8,

9} , Mega Kar _{6,

7,

8,

9} , Dabin wang _{6,

7,

8,

9} , Changlong Xiao _{6,

7,

8,

9} , Maria Forsyth _{6,

9,

10,

11,

12} , Sagar Mitra _{1,

2,

3,

4,

5} , Douglas R. MacFarlane _{6,

7,

8,

9}

Affiliation

Sodium-ion batteries (SIBs) are widely considered as alternative, sustainable, and cost-effective energy storage devices for large-scale energy storage applications. In this work, an easily fabricated sodium vanadium phosphate–carbon composite (NVP@C) cathode material shows a good rate capability, and long cycle life (89% capacity retention after 5000 cycles at a rate of 10C) with an ionic liquid electrolyte for room temperature sodium metal batteries. The electrochemical performance of a full-cell sodium ion battery with NVP@C and hard carbon electrodes was also investigated at room temperature with an ionic liquid electrolyte. The battery exhibited 368 W h kg⁻¹ energy density and 75% capacity retention after 100 cycles, outperforming the organic electrolyte-based devices.

中文翻译：

基于磷酸钒钒复合材料的钠离子电池中支持高能量密度的离子液体电解质†

钠离子电池（SIB）被广泛认为是用于大规模储能应用的替代，可持续且具有成本效益的储能设备。在这项工作中，使用离子液体电解质制备的易于制造的磷酸钒钒碳复合材料（NVP @ C）阴极材料具有良好的倍率能力和长循环寿命（5000次循环以10C的速度循环后，容量保持率达89％）。室温钠金属电池。还使用离子液体电解质在室温下研究了带有NVP @ C和硬碳电极的全电池钠离子电池的电化学性能。该电池在100次循环后表现出368 W h kg ^-1的能量密度和75％的容量保持率，优于基于有机电解质的设备。

更新日期：2018-03-14

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