Manohar C V, Mendes Tiago Correia, Kar Mega, Wang Dabin, Xiao Changlong, Forsyth Maria, Mitra Sagar, MacFarlane Douglas R
Electrochemical Energy Storage Laboratory, Department of Energy Science and Engineering, IIT Powai, Mumbai-400076, India.
ARC Centre of Excellence for Electro materials Science, School of Chemistry, Monash University, Victoria, Australia.
Chem Commun (Camb). 2018 Apr 3;54(28):3500-3503. doi: 10.1039/C8CC00365C.
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.
钠离子电池（SIBs）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装置。在这项工作中，一种易于制备的磷酸钒钠-碳复合材料（NVP@C）阴极材料展现出良好的倍率性能以及长循环寿命（在10C倍率下5000次循环后容量保持率为89%），该材料与一种离子液体电解质用于室温钠金属电池。使用离子液体电解质，在室温下还研究了具有NVP@C和硬碳电极的全电池钠离子电池的电化学性能。该电池展现出368 W h kg-1的能量密度以及在100次循环后75%的容量保持率，优于基于有机电解质的装置。
