部分中和聚烯酸作为离子电池水性陶涂层分离器的有效结合剂
Ai Qin Thang1,2, Yuejun Shen1, Zugui Shi2
1School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
Chemistry, an Asian journal
|August 6, 2023
概括
部分中和的聚烯酸涂层陶分离器提高了电池的性能. 这种新型涂层增强了离子电池的附着性和循环稳定性.
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
- 聚合物科学 聚合物科学
背景情况:
- 离子电池中的传统聚烯烯分离器面临着湿透性和稳定性方面的挑战.
- 陶涂层正在探索以提高分离器性能,但有效的结合剂和分散方法至关重要.
研究的目的:
- 开发一种使用部分中和聚烯酸 (Pn-PAA) 和α-的新型陶涂层分离器 (CCS).
- 研究Pn-PAA在聚烯烯分离器上作为α-的分散剂和结合剂的作用.
- 为了评估离子半电池中制造的CCS的电化学性能和稳定性.
主要方法:
- 在酸性条件下使用Pn-PAA在微孔聚烯分离器上涂上微微微米大小的α-.
- 利用coulombic相互作用用于胺分散和结合,以粘附于用等离子体处理的分离器.
- 在LiFePO4/Li金属半电池中,描述湿透性,离子导电性,粘合强度和电化学性能 (循环稳定性,特异容量).
主要成果:
- Pn-PAA有效地分散了α-,并与分离器形成了强大的键,形成了水友性CCS.
- 这种由PN-PAA制成的CCS在碳酸盐基电解质中表现出良好的湿透性和离子导电性.
- 实现了相当大的附着强度 (~106 N/m),增强了循环稳定性,在1C下200个循环后,具有145.0 mAh/g的特定容量.
结论:
- 部分中和的多烯酸是一种有效的分散剂和粘合剂,用于制造高性能陶涂层分离器.
- 涂有PN-PAA的分离器显示了离子电池的粘附性,湿透性和电化学稳定性的显著改善.
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