克洛扎平增强N/Cl联合化碳骨架协同优化Na3V2(PO4) 3,具有卓越的性能和出色的热稳定性
Haodi Dong1, Shengsi Wang1, Changcheng Liu1
1School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, PR China; Institute of Advanced Energy Materials and Systems, North University of China, Taiyuan 030051, Shanxi, PR China.
Journal of colloid and interface science
|January 7, 2025
概括
这项研究增强了离子电池阴极材料酸 (NVP),使用和共同修改的碳涂层. 这提高了导电性和稳定性,提高了电池的性能和安全性.
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:
- 酸 (NVP) 具有较差的电子导电性和结构降解,限制了其在离子电池中的使用.
- 开发先进的阴极材料对于高效和持久的储能解决方案至关重要.
研究的目的:
- 为了提高NVP作为阴极材料的电化学性能和结构稳定性.
- 研究和共同修改的碳涂层对NVP的性能的影响.
主要方法:
- 在NVP上使用克洛扎 (CZP) 通过水热途径合成N/Cl联合修改的碳涂层.
- 使用现场X射线衍射 (XRD) 和X射线光电子谱学 (XPS) 进行表征.
- 在各种C率下进行电化学性能测试和长期循环稳定性评估.
- 热稳定性评估使用一个增热加速热量计.
主要成果:
- N/Cl联合修改的碳层增强了NVP的电子导电性,并提供了对体积膨胀的结构缓冲.
- 的结合会产生缺陷,增加活性点和Na+的可访问性,而离子会提高导电性.
- 优化的CZP-5%样本表现出高可逆容量 (115.6 mAh g-1在0.1C) 和出色的循环稳定性 (超过1500个循环).
- 证明了显著的容量保留 (20°C时85.5%,40°C时79.9%) 和改善的热稳定性.
结论:
- 与N/Cl共同修改的碳涂层有效地解决了NVP在离子电池应用中的局限性.
- 开发的材料显示出高性能和持久的离子电池的巨大潜力.
- 这些发现为设计基于提高热稳定性的先进电池管理系统提供了宝贵的见解.
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