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基于纤维素酸盐的柔性分离器的制备及其在空气电池中的应用
Yifan Yuan1, Hongyou Chen1, Liangkui Peng1
1College of Textiles and Clothing, Xinjiang University, Urumqi 830017, People's Republic of China.
Nanotechnology
|November 23, 2023
概括
这项研究通过开发一种新的纤维素酸/聚乙醇纳米纤维分离器来增强灵活的固态空气电池. 修改后的分离器显示了电解质吸收和离子导电性的改善,从而提高了储能性能.
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
- 纳米技术纳米技术
背景情况:
- 灵活的固态空气电池对可穿戴式储能充满希望.
- 目前的凝电解质分离器面临着电解质亲和力和离子导电性的挑战.
- 提高分离器性能对于提高电池性能至关重要.
研究的目的:
- 为了提高纤维素酸 (CA) /聚乙醇 (PVA) 纳米纤维分离器的电解质吸收,离子导电性和机械强度.
- 开发一种改进的分离器,以提高柔性固态空气电池的性能.
- 为了研究TiO2和谷氨 (GA) 修改的影响.
主要方法:
- 使用TiO2纳米粒子制造的CA/PVA纳米纤维.
- 修改CA/PVA/TiO2分离器使用甲 (GA) 交叉连接.
- 分离器性能的表征,包括多孔性,电解质吸收,离子导电性和电化学性能.
主要成果:
- 确定TiO2和GA的最佳质量分数分别为2%和5%.
- 经过修改的分离器显著增加了多孔性 (68.2%) 和电解质吸收率 (285.3%).
- 优化的分离器在7个循环后实现了179 mA cm-3的放电容量,周期稳定性为89%.
结论:
- 开发的CA/PVA/TiO2/GA分离器有效地克服了传统凝分离器的局限性.
- 增强的性能导致灵活的固态空气电池的性能优越.
- 这项工作为先进的可穿戴储能设备提供了一个可行的策略.
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