改性Pechini衍生的Na3V2(PO4)3/C,具有优越的低温性能,用于离子电池
Ilyas Mukushev1,2,3,4, Nurbolat Issatayev1,2,4, Aliya Mukanova1,2,4
1National Laboratory Astana, Laboratory of Energy Storage Systems Kabanbay Batyr Ave. 53 Astana 010000 Kazakhstan arailym.nurpeissova@nu.edu.kz.
RSC advances
|January 23, 2026
概括
使用Na3V2(PO4)3 (NVP) 纳米材料的离子电池在低温应用中表现有前途. 经过修改的Pechini方法合成的碳涂层NVP在零下条件下提供了增强的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 离子电池 (SIB) 被探索为离子电池的可持续替代品.
- 纳西康型Na3V2(PO4) 3 (NVP) 是一个有前途的SIB阴极材料,因为它的稳定结构和快速离子扩散.
- 低电子导电性阻碍了NVP的实际应用.
研究的目的:
- 为了合成具有改进性能的NASICON结构NVP纳米材料.
- 评估基于NVP的阴极的电化学性能,特别是在低温下.
- 为了解决NVP中的低电子导电性挑战,用于实际的SIB.
主要方法:
- 使用修改的Pechini方法合成NASICON结构NVP纳米材料.
- 在NVP纳米材料上应用碳涂层.
- 在包括零度以下条件在内的各种温度下测试NVP/C复合阴极的电化学性能.
主要成果:
- 经过修改的Pechini方法成功生产了带有碳涂层 (NVP/C) 的NVP纳米材料.
- 在0.2°C和-20°C时,NVP/C阴极显示出74.13mAhg-1的容量.
- 该材料在-25°C下保持了74.99%的室温容量,在低温下表现出色.
结论:
- 通过修改的Pechini方法合成的NVP/C复合物是SIBs非常有前途的阴极材料.
- 该材料在零度以下的温度下表现出卓越的性能和弹性.
- 这一发展提升了SIB在寒冷环境和苛刻应用中的潜力.
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