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通过构成和界面工程来推进NASICON结构固态离子电池

Raghunayakula Thirupathi¹, Ravi P Srivastava^1,2, Bhumika Patankar¹

¹Department of Materials Science & Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India. somar@iitk.ac.in.

Chemical communications (Cambridge, England)

|June 27, 2025

概括

这项研究通过优化组合和接口来增强NASICON型固体电解质 (SE) 用于固态电池 (SSB). 这为先进的电池应用带来了更好的离子导电性和电化学稳定性.

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
固态化学固态化学

背景情况:

纳西康类型的陶是固态电池 (SSB) 固体电解质 (SE) 的前景.
目前的局限性包括适度的离子导电性和高的界面电阻,阻碍了实际应用.
对于下一代储能解决方案而言,这些进展至关重要.

研究的目的:

审查最近在克服NASICON类型SSB的SE的挑战方面取得的进展.
提出构成和接口工程的双重战略.
为合理设计和未来研究方向提供框架.

主要方法:

通过对Yb/Sc,Ce/Sc和Mg/Si等元素进行Na3Zr2Si2PO12 (NZSP) 的联合化来增强Na+导电性的组合工程.
接口工程技术包括灌湿剂插入,复合式阴极形成和透式阴极,以改善固体-固体接触和电化学稳定性.
整合这些方法,以合理设计基于NASICON的SSB.

主要成果:

联合兴奋剂策略通过NZSP的结构修改来增强Na+导电性.
接口工程改善了阴极和SE之间的接触,提高了电化学稳定性.
采用Mg/Si联合剂的NZSP,Na金属阳极和透阴极的SSB实现了高活性质量负载 (2.2 mg cm-2) 和良好的循环性能 (103.8 mA h g-1在0.2C,50个循环后95%的保留).

结论:

通过组合组合和界面工程来设计基于NASICON的SSB的统一框架.
该研究表明,在使用优化NASICON电解质实现高性能SSB方面取得了重大进展.
概述了基于NASICON的SSB技术未来研究和开发的路线图.

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