Benefits of Warm Isostatic Pressing for Battery Processing
Several challenges have hindered the commercialization of solid-state batteries (SSBs), including residual
porosity in components, inadequate particle contact, and changes in cell volume during charging and
discharging. However, warm isostatic pressing (WIP) has emerged as a critical solution to address these
issues.
Reduced Internal Resistance
WIP lowers internal resistance by reducing porosity and improving particle contact, especially in sulfide-based SSBs, where it decreases ionic grain-boundary resistance and overall porosity.
Increased Cycle Life
By enhancing material density and structural integrity, WIP increases the cycle life of SSBs, ensuring better long-term performance and stability.
Enhanced Coulomb Efficiency
WIP optimizes particle density and homogeneity, leading to better charge -discharge efficiency and higher Coulomb efficiency, while also enabling uniform pressure sintering even for multilayer cells.
Flexibility in Cell Sizes and Geometries
WIP can process cells of various sizes and shapes, applying uniform pressure and temperature, overcoming challenges faced by other methods like uniaxial pressing.