一种基于Pullulan多糖的阻燃聚电解质水凝,用于高安全性柔性离子电容器
Xiaoyan Li1, Anbai Li1, Mengmeng Xun1
1Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
International journal of biological macromolecules
|November 27, 2024
概括
由聚烯胺,普卢兰和植物酸制成的新型阻燃水凝电解质增强了柔性离子电容器的安全性. 这种材料提供了高性能和耐用性,为更安全的储能解决方案铺平了道路.
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:
- 储能器件中的液体电解质会带来安全风险,如易燃性和泄漏.
- 开发更安全,高性能电解质对于推进储能技术至关重要.
研究的目的:
- 创建一种阻燃,机械坚固和灵活的水凝电解质,以提高储能设备的安全性.
- 为了研究离子电容器的性能,利用这种新的水凝电解质.
主要方法:
- 使用一步激素聚合方法合成聚烯胺/普卢兰/植物酸 (PAM/PUL/PA) 水凝电解质.
- 描述了水凝的阻燃性,机械性和电化学性.
- 使用水凝作为电解质和分离器组装了离子电容器 (ZIC).
主要成果:
- 该PAM/PUL/PA水凝表现出优异的阻燃性能 (LOI高达58%),高机械强度 (拉伸1535%,拉伸应力92kPa),以及良好的离子导电性 (22.54mS cm-1).
- 组装的ZIC表现出高的特定容量 (111.5 mAh g-1在0.1 A g-1),良好的能量密度 (97.57 Wh kg-1在49.99 W kg-1),以及显著的循环稳定性 (74.6%的保留率在10,000个循环后).
- 此外,ZIC还表现出了出色的灵活性,在1000个曲周期后保持电容.
结论:
- 开发的PAM/PUL/PA水凝电解质为传统液体电解质提供了高安全性,多功能替代品.
- 水凝的特性归因于强结合和静电相互作用.
- 这项工作为创建安全和灵活的储能设备提供了可行的途径.
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