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一种通过新型抗水解添加剂功能化的薄复合聚合物电解质,使全固态电池具有出色的速率和循环性能

Liansheng Li¹, Yangming Hu¹, Huanhuan Duan¹

¹Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China.

|May 31, 2023

概括

一种新型的抗水解添加剂,二,三,四,五,六-五甲酸 (MgPFPAA),增强了所有固态电池 (ASSLB) 的复合固态电解质 (CSEs). 这提高了接口稳定性和电池性能.

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
固态电池固态电池是什么

背景情况:

含的添加剂通过稳定接口来提高复合固态电解质 (CSEs) 的电化学性能.
传统添加剂的水解敏感性阻碍了大规模的CSE制备.

研究的目的:

为了合成一种新型的抗解含添加剂,二,三,四,五,六-五甲酸 (MgPFPAA).
调查MgPFPAA在调节全固态电池 (ASSLB) 中电极/电解质接口中的作用.

主要方法:

合成的MgPFPAA. . 的合成.
使用MgPFPAA功能化的基于PEO/PVDF的超薄CSE的制造.
基于LiFePO4的ASSLB的电化学性能测试使用功能化的CSE.
对接口属性的理论计算和实验分析.

主要成果:

MgPFPAA 具有抗解特性,可在环境条件下进行大规模的 CSE 制备.
MgPFPAA改善了固体电解质介相 (SEI) 膜的组成和结构,创造了一个稳定的CSE/Li接口.
基于LiFePO4的ASSLB与MgPFPAA功能化的CSE显示出高放电能力 (93.7mAhg-1在10°C) 和出色的循环稳定性 (74.9%在5.0°C1500个循环后保持).
功能化的CSE证明了与大面积容量LiFePO4和高压LiNi0.8Co0.1Mn0.1O2阴极的兼容性.

结论:

MgPFPAA是一种有前途的抗水解添加剂,可用于ASSLBs开发稳定和高性能CSEs.
使用MgPFPAA有助于在实践中大规模制造ASSLB.
具有MgPFPAA功能的CSE提供了增强的电化学性能和与先进的阴极材料的兼容性.

关键词:

所有固态电池都是固态电池.抗水解添加剂的抗水解添加剂没有树石的阳极是没有树石的.高速性能的高率性能.金属电池的金属电池是什么

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