通过Pr6O11的修改,有效地提高了Na3V2电池的储量
Yingying Liu1, Pengcheng Wang1, Zhipeng Qin1
1College of Physics and Energy, Fujian Provincial Solar Energy Conversion and Energy Storage Engineering Technology Research Center, Fujian Normal University, Fuzhou 350117, China; Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou 350117, China; Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou 350117, China.
Journal of colloid and interface science
|October 10, 2024
概括
使用Na3V2(PO4) 3 (NVP) 阴极的离子电池 (SIB) 显示性能有所改善. 用Pr6O11纳米粒子修改NVP可以提高导电性和电化学稳定性,从而更好地储存能量.
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) 对电网规模的储能充满希望.
- Na3V2(PO4) 3 (NVP) 是一个受欢迎的阴极材料,由于其结构和高潜力.
- 由于NVP的导电性较低和接口动力学较差,这限制了其实际应用.
研究的目的:
- 为了提高SIBs的NVP阴极材料的电化学性能.
- 解决NVP中低导电性和低效的电荷传输的局限性.
- 改进NVP的接口兼容性和整体离子存储能力.
主要方法:
- 用Pr6O11纳米粒子对NVP进行创新的表面修饰.
- 加入Pr6O11,一个负温度系数 (NTC) 材料,以提高导电性和接口性能.
- 在SIB中修改的NVP电极的电化学表征,包括循环测试和全电池组装.
主要成果:
- 优化的NVP-2%Pr6O11电极显著提高了导电性和电化学性能.
- 在高温 (27°C和45°C) 和高电流密度 (8°C) 的情况下,保持了高的特异性.
- 与未经修改的NVP相比,修改后的NVP电极在1000个循环中表现出更好的容量保留,并在袋子充满电池测试中提高了热安全性.
结论:
- 用Pr6O11纳米颗粒对NVP表面进行修改是提高SIB性能的有效策略.
- 增强的导电性和接口动力学有助于提高循环稳定性和能量存储能力.
- 这种方法为开发下一代储能系统的先进NVP电极提供了有价值的见解.
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