Perspective on design and technical challenges of Li-garnet solid-state batteries


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Date

2022

Publication Type

Journal Article

ETH Bibliography

yes

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Abstract

Solid-state Li-ion batteries based on Li-garnet Li7La3Zr2O12 (LLZO) electrolyte have seen rapid advances in recent years. These solid-state systems are poised to address the urgent need for safe, non-flammable, and temperature-tolerant energy storage batteries that concomitantly possess improved energy densities and the cycle life as compared to conventional liquid-electrolyte-based counterparts. In this vision article, we review present research pursuits and discuss the limitations in the employment of LLZO solid-state electrolyte (SSE) for solid-state Li-ion batteries. Particular emphasis is given to the discussion of pros and cons of current methodologies in the fabrication of solid-state cathodes, LLZO SSE, and Li metal anode layers. Furthermore, we discuss the contributions of the LLZO thickness, cathode areal capacity, and LLZO content in the solid-state cathode on the energy density of Li-garnet solid-state batteries, summarizing their required values for matching the energy densities of conventional Li-ion systems. Finally, we highlight challenges that must be addressed in the move towards eventual commercialization of Li-garnet solid-state batteries.

Publication status

published

Editor

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Volume

23 (1)

Pages / Article No.

41 - 48

Publisher

Taylor & Francis

Event

Edition / version

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Subject

Li-garnet solid-state batteries; LLZO solid-state electrolyte; Li metal anode; energy density; charge-storage capacity

Organisational unit

03934 - Kovalenko, Maksym / Kovalenko, Maksym check_circle

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