Physical Vapor Deposition in Solid-State Battery Development: From Materials to Devices.

Area of Science:

• Materials Science and Engineering
• Electrochemistry
• Energy Storage Technologies

Background:

• Electrochemical energy storage systems, particularly solid-state batteries, are critical for next-generation power solutions.
• Developing advanced materials with well-defined properties is essential for improving battery performance and safety.
• Physical Vapor Deposition (PVD) offers versatile techniques for thin-film fabrication and material characterization.

Purpose of the Study:

• To review the significant contributions of Physical Vapor Deposition (PVD) processes to the advancement of solid-state battery technology.
• To highlight the utility of PVD in fabricating and characterizing individual solid-state battery components (electrolytes and electrodes).
• To assess the progress in solid-state battery development at the device scale using PVD-enabled materials and structures.

Main Methods:

• Overview of various PVD technologies applicable to battery material synthesis.
• Detailed description of PVD methods for fabricating solid electrolytes and active electrode materials.
• Characterization techniques employed to understand material properties and interfacial phenomena facilitated by PVD.

Main Results:

• PVD enables precise control over material properties, crucial for solid electrolyte and electrode development.
• PVD techniques facilitate in-depth understanding of fundamental material behaviors and interfacial interactions in solid-state batteries.
• Assessment of current academic and commercial solid-state batteries reveals progress in energy/power density and stability, with PVD playing a key role.

Conclusions:

• Physical Vapor Deposition is a pivotal technology for advancing solid-state battery materials and device fabrication.
• PVD facilitates the development of high-performance solid-state batteries through precise material control and characterization.
• Future directions include utilizing PVD for 3D-structured cells and bulk cells to further enhance energy and power densities.