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有机-无机双网复合分离器用于金属电池

Zetong Liu¹, Pingan Li¹, Kangjia Hu¹

¹State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.

Macromolecular rapid communications

|October 14, 2024

概括

一个使用酸 (HAP) 纳米线和聚m-异甲胺 (PMIA) 的新型复合材料分离器有效抑制了树突. 这通过改善离子传输来提高金属电池的安全性和性能.

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:

商用聚烯分离器具有较差的离子导电性,导致金电池的树石生长和安全问题.
开发先进的分离器对于提高下一代电池的性能和安全性至关重要.

研究的目的:

设计和制造一种新的有机-无机复合物分离器,以增强离子运输和抑制树状石的形成.
为了研究酸 (HAP) 纳米线和聚m-异胺 (PMIA) 的协同效应,以提高电池性能.

主要方法:

复合材料分离器的制造,使用电聚m-乙烯异胺 (PMIA) 膜,涂上酸 (HAP) 纳米线.
分离器的离子导电性,离子转移数和形态的表征.
使用对称电池和LiFePO4RadyoLi电池评估电池性能.

主要成果:

19微米的HAP/PMIA复合分离器实现了高离子导电性 (0.68 mS cm−1) 和0.51的离子转移数.
对称细胞的寿命超过1000小时,极化低,性能优于商业分离器.
在200个循环后,LiFePO4adjusaLi电池显示出97.3%的容量保留率和出色的速率能力.

结论:

HAP/PMIA复合分离器有效地增强了离子运输,并抑制了树的生长.
这种新型分离器为提高金属电池的安全性和性能提供了有前途的解决方案.
HAP和PMIA之间的协同作用是实现优越电化学性能的关键.

关键词:

双网络分离器双网络分离器基亚帕提特纳米线的使用方法离子运输离子运输离子运输金属电池是金属电池的一种.

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