A Positron Implantation Profile Estimation Approach for the PALS Study of Battery Materials

Positron annihilation spectroscopy is a powerful probe to investigate the interfaces in materials relevant for energy storage such as Li-ion batteries. The key to the interpretation of the results is the positron implantation profile, which is a spatial function related to the characteristics of the materials forming the battery. We provide models for the positron implantation profile in a cathode of a Li-ion battery coin cell. These models are the basis for a reliable visualization of multilayer geometries and their interfaces in thin cathodes of lithium-ion batteries.

Automated summary

Positron annihilation spectroscopy is a powerful tool for investigating interfaces in materials relevant for energy storage, such as Li-ion batteries. The key to interpreting the results lies in the positron implantation profile, which is a spatial function related to the characteristics of the battery materials. We provide models for the positron implantation profile in the cathode of a Li-ion battery coin cell, allowing for reliable visualization of multilayer geometries and interfaces in thin cathodes of lithium-ion batteries.