Toughened solid-state electrolytes

Background

Solid-state electrolytes (SSEs) are a critical component in the development of next-generation batteries, offering potential advantages in terms of safety and energy density. However, challenges such as low ionic conductivity, fracture susceptibility, and dendrite formation have hindered their widespread adoption.

Technology description

This invention introduces the use of second-phase mechanical toughening agents to enhance the properties of SSEs. By incorporating various materials like carbides, nitrides, oxides, borides, and intermetallics into the SSE matrix, the technology aims to improve fracture resistance, suppress dendrite growth, and enhance ionic conductivity. The toughening agents can be added at different stages of the SSE production process and can be present in various morphologies.

Benefits

• Improved mechanical strength: The addition of toughening agents significantly enhances the fracture resistance of SSEs, reducing the risk of mechanical failure during battery operation.
• Dendrite suppression: The toughening agents can act as physical barriers to dendrite growth, improving the overall safety and lifespan of the battery.
• Enhanced ionic conductivity: By increasing the density of the SSE and reducing porosity, the incorporation of toughening agents can lead to improved ionic conductivity.
• Versatility: The technology is applicable to a wide range of SSE materials, including LLZO, argyrodite, NASICON, and others.

Applications

• Solid-state batteries: The technology can be applied to various types of solid-state batteries used in electric vehicles, portable electronics, and stationary energy storage systems.
• Other electrochemical devices: The improved properties of SSEs enabled by this technology can benefit other electrochemical devices such as sensors and actuators.

Opportunity

This invention presents a significant opportunity to advance the development of solid-state batteries by addressing critical challenges related to mechanical stability and dendrite formation. By improving the performance and reliability of SSEs, this technology can contribute to the widespread adoption of electric vehicles and other clean energy technologies.

The potential market for this technology is substantial, encompassing the growing electric vehicle industry, portable electronics market, and energy storage sector. Additionally, there is potential for further research and develop­ment to optimize the selection and incorporation of toughening agents for specific SSE materials and applications.