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Na₃Zr₂Si₂PO₁₂-用于固态电池的聚合物复合电解质

Anurag Tiwari¹, Rajendra Kumar Singh¹

¹Ionic Liquid and Solid-State Ionics Lab, Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.

Chemphyschem : a European journal of chemical physics and physical chemistry

|September 2, 2024

概括

这项研究开发了一种复合固体聚合物电解质 (CSPE),将有机聚合物和陶材料结合起来,用于更安全,更高效的电池. 新型CSPE具有高离子导电性和热稳定性,适用于固态电池应用.

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:

开发更安全,更高效的电池对于储能至关重要.
固态电解质比液态电解质提供了更好的安全性,但往往遭受低离子导电性.
复合固体聚合物电解质 (CSPE) 旨在将聚合物的机械灵活性与陶的高导电性相结合.

研究的目的:

为了合成和表征一种新的复合物固体聚合物电解质 (CSPE),以提高电池性能.
研究将离子液体和无机填充剂纳入聚合物电解质的协同效应.
评估CSPE的电化学特性和稳定性,以便在固态电池中潜在使用.

主要方法:

用于用Na3Zr2Si2PO12 (NZSP) 陶和聚合物电解质 (PVDF-HFP与离子液) 合成CSPE的溶液造技术.
使用X射线衍射 (XRD),扫描电子显微镜 (SEM),热重力测量分析 (TGA) 和差分扫描热量测量 (DSC) 的表征.
通过复杂阻抗光谱 (CIS) 和循环电压测量评估的电化学特性.

主要成果:

XRD证实了复合性质,显示了无形聚合物和晶体NZSP相.
SEM揭示了一种均且相互连接的表面形态.
TGA表示热稳定性高达200°C,而DSC显示晶度降低.
在室温下,离子导电率达到1.03mS/cm.
取得了0.53的离子转移数和4.9V的电化学稳定窗口 (ESW).

结论:

开发的CSPE有效地整合了有机聚合物和陶电解质的特性.
CSPE显示出有希望的离子导电性,热稳定性和广泛的电化学稳定性窗口.
这种材料适用于先进的固态电池应用,提供更高的安全性和效率.

关键词:

复合电解质是一种复合电解质.离子导电性离子导电性这里是纳西康尼.离子电池的电池是一种离子电池.

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