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可靠的横向Zn沉积沿 (002) 平面通过离子电池的氧化PAN分离器
Lei Luo1, Zhaorui Wen1, Guo Hong2
1Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade Taipa Macau SAR 999078 China shichen@um.edu.mo.
RSC advances
|December 4, 2023
概括
一种氧化聚烯二 (OPAN) 膜有效调节水性离子电池 (AZIB) 中的沉积,防止树突并提高循环寿命. 这项创新为更安全,更低成本的储能提供了可持续的解决方案.
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:
- 水性离子电池 (AZIB) 由于安全性和成本优势,对储能具有吸引力.
- 不均的电沉积和树突形成阻碍了深度充电和电池寿命的延长.
- 现有的基板改造只能为统一的沉积提供临时解决方案.
研究的目的:
- 为AZIBs开发一种新型分离器,以确保连续和均的沉积.
- 为了抑制树突的形成,并提高AZIBs的循环稳定性.
- 提高水性基储能系统的整体性能和安全性.
主要方法:
- 氧化聚烯二 (OPAN) 膜的制造,具有结合平面结构.
- 使用OPAN膜作为对称和MnO2//Zn全细胞中的分离器.
- 研究OPAN分离器对沉积纹理和离子传输的影响.
主要成果:
- 该OPAN分离器连续调节了具有首选 (002) 纹理的Zn沉积,有效地抑制了树突.
- OPAN促进了快速的Zn2+离子转移,同时排斥了SO42-,最大限度地减少了副作用.
- 对称电池实现了超过1300小时的循环寿命,并且在65%的放电深度保持稳定性.
- 使用OPAN的MnO2//Zn全细胞在5000个循环中显示出最小的衰变.
结论:
- OPAN膜为AZIBs提供了一个连续和统一的金属沉积策略.
- 这项工作为开发具有金属阳极的高性能和安全电池提供了新的途径.
- 开放式分离器为克服AZIB技术中的关键挑战提供了一个有希望的解决方案.
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