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接口兼容的凝聚合物电解质通过NaF-可溶性调节实现了对所有气候固态电池的调节

Xiaoniu Guo¹, Zhengkun Xie¹, Ruixue Wang¹

¹College of Chemistry, Zhengzhou University, Zhengzhou, 450001, Henan, P. R. China.

Angewandte Chemie (International ed. in English)

|March 10, 2024

概括

这项研究引入了一种新的凝聚合物电解质 (GPE),使用聚酸 (PLA) 纤维和化 (NaF) 来制造更安全的电池. 新的GPE确保了稳定的接口和无树的阳极,在各种条件下实现高性能.

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
聚合物科学聚合物科学

背景情况:

凝聚合物电解质 (GPEs) 为电池提供了更高的安全性,但其界面兼容性不佳.
与阴极和阳极同时实现稳定接口仍然是GPE开发的一个重大挑战.

研究的目的:

为高安全性电池开发一种具有更好的界面兼容性的新型GPE.
为了研究新型PLA-NaF GPE的电化学性能和界面行为.

主要方法:

使用聚酸 (PLA) 和化 (NaF) 的电制造的聚合物中的盐纤维的制造.
在液体电解质中GPE的现场形成.
电化学表征包括离子导电性,转移数和细胞性能测试.

主要成果:

在室温下,PLA-NaF GPE表现出高离子导电性 (2.50×10-3 S cm-1) 和Na+转移数 (0.75).
由于NaF溶解而形成的缩电解质环境,导致稳定的有机丰富的阴极-电解质介面 (CEI) 和无树的阳极.
该GPE显示出与各种电池阴极 (Na₃V₂(PO₄) ₃,Na_2+2xFe_2-x(SO₄) ₃,Na_0.72Ni_0.32Mn_0.68O₂,NaTi₂(PO₄) ₃) 的极好的兼容性.

结论:

开发的PLA-NaF GPE有效地解决了电池的界面兼容性问题.
聚乙烯使得无树的阳极和稳定的阴极接口成为可能,从而实现了卓越的电化学性能.
这种GPE显示出对所有气候,高安全性电池应用的前景.

关键词:

兼容性兼容性兼容性凝聚合物电解质的电解质接口接口接口接口电池电池的使用方法固态电池是一种固态电池.

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