LISICON structured Li3V2(PO4)3 with high rate and ultralong life for low-temperature lithium-ion batteries†,Journal of Materials Chemistry A

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LISICON structured Li3V2(PO4)3 with high rate and ultralong life for low-temperature lithium-ion batteries†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2018-05-14 00:00:00 , DOI: 10.1039/c8ta01124a
Ruihuan Qin _{1,

2,

3,

4,

5} , Yaqing Wei _{1,

2,

3,

4,

5} , Tianyou Zhai _{1,

2,

3,

4,

5} , Huiqiao Li _{1,

2,

3,

4,

5}

Affiliation

Current electrode materials for commercial lithium ion batteries (LIBs) suffer from poor low temperature electrochemical performance, which seriously limits their application in winter and cold climate areas. Herein, pure phase LISICON structured Li₃V₂(PO₄)₃ (r-LVP) was successfully prepared and investigated for the first time as a low temperature cathode for LIBs. Benefiting from a fast ionic conductive structure and high structural stability, the r-LVP exhibits an outstanding high rate performance in a wide temperature range from 25 °C to −20 °C. Even at −30 °C, a discharge capacity of 90 mA h g⁻¹ at 0.2C can be achieved, corresponding to 80% of the room temperature capacity. After 5000 cycles at a high rate of 10C, 84% of the initial capacity can be retained at −10 °C. Such a high rate capability and long cycle stability promise r-LVP could be a competitive candidate for low temperature LIBs.

中文翻译：

LISICON结构化的Li ₃ V ₂（PO ₄）₃具有高速率和超长寿命，适用于低温锂离子电池†

用于商用锂离子电池（LIB）的当前电极材料具有不良的低温电化学性能，这严重限制了它们在冬季和寒冷气候地区的应用。在此，成功制备了纯相LISICON结构的Li ₃ V ₂（PO ₄）₃（r-LVP），并首次将其作为LIB的低温阴极进行了研究。得益于快速离子导电结构和高结构稳定性，r-LVP在25°C至-20°C的宽温度范围内均具有出色的高倍率性能。即使在−30°C时，放电容量也可达到90 mA hg ^-1可以达到0.2C的温度，相当于室温容量的80％。在10°C的高速率下进行5000次循环后，初始容量的84％可以保留在-10°C下。如此高的速率能力和长周期稳定性有望使r-LVP成为低温LIB的竞争候选者。

更新日期：2018-05-14

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