Garnet Solid Electrolyte for Advanced All-Solid-State Li Batteries

All-solid-state lithium batteries (ASSLBs) with solid electrolytes have attracted great attention for the replacement of traditional lithium batteries with liquid electrolytes due to their advantages such as high safety, excellent electrochemical cycling property and long-term stability. To date, various solid electrolytes including oxide, sulfide and polymer and organic-inorganic hybrid electrolytes have been developed for ASSLBs. Especially, the strategies to improve electrochemical performance especially ionic conductivity and stability of solid electrolytes have been widely studied. However, nowadays, ASSLBs are still not commercialized and used in our daily life. In this article, the situations of the solid electrolytes are critically reviewed, the main challenges and future prospective for the development of solid electrolytes are given and the utmost limits of those state-of-the-art solid electrolytes are analyzed. In addition, the electrode/electrolyte interface modification techniques to make ASSLBs achieving the excellent performance are evaluated. It is expected to provide a guidance for the development of novel solid electrolytes with higher ionic conductivity and environmental stability for ASSLBs.

Utmost limits of various solid electrolytes in all-solid-state lithium batteries: A critical review

To satisfy the ever-increasing demand for higher energy density, solid-state batteries (SSBs) have received significant attention due to their potential in providing energy densities greater than 400 Wh kg−1. And as a key material in SSBs, the garnet-type Li7La3Zr2O12 (LLZO) electrolyte is particularly promising because of its high ionic conductivity at room temperature and excellent chemical stability against Li metal. And although great progress has been achieved for garnet electrolytes, many critical issues remain in terms of the practical application of garnet-based SSBs with truly high energy densities. Based on this, this review will provide an overview of the current progress in solid garnet batteries in terms of electrolyte fabrication and interfacial engineering in prototype cells. In addition, various strategies used to meet application requirements are comprehensively reviewed, including not only strategies to enhance energy density, but also methods to enhance rate capability, extend cycle life, decrease cost and reduce thermal runaways. Furthermore, crucial challenges are presented and future research directions are proposed in the development of high-performance solid lithium batteries.

Comprehensive Investigation into Garnet Electrolytes Toward Application-Oriented Solid Lithium Batteries

Modified Li7La3Zr2O12 (LLZO) and LLZO-polymer composites for solid-state lithium batteries

https://iopscience.iop.org/article/10.1149/1945-7111/ab7f84/pdf

Review—Interfaces: Key Issue to Be Solved for All Solid-State Lithium Battery Technologies

Fluorescence resonance energy transfer of CaF2: Eu2+, Tb3+ applied to dye-sensitized solar cells.

Structure and ionic conductivity of Li7La3Zr2−xGexO12 garnet-like solid electrolyte for all solid state lithium ion batteries

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Fluorescence resonance energy transfer of CaF2: Eu2+, Tb3+ applied to dye-sensitized solar cells.

Structure and ionic conductivity of Li7La3Zr2−xGexO12 garnet-like solid electrolyte for all solid state lithium ion batteries