FAW and Eastern Institute of Technology Achieve 5 MPa Solid-State Battery Breakthrough

FAW Group, in collaboration with Eastern Institute of Technology, Ningbo, has achieved a technological breakthrough in the low-pressure operation of sulfide all-solid-state batteries. The findings, published in the international journal Advanced Energy Materials under the title "Ionic Elastomers Enable Low-Pressure, High-Stability Solid-State Batteries," address a long-standing bottleneck that has hindered industrialization.

All-solid-state batteries typically require operating pressures above 20 MPa, a constraint that has limited their commercial viability. The research team tackled contact degradation under low-pressure conditions through material morphology control, innovative cell structure design, and manufacturing process optimization. As a result, large-capacity all-solid-state cells achieved stable cycling at just 5 MPa.

This breakthrough significantly reduces the cell's dependence on external pressure, making it compatible with battery pack engineering design and providing a key technological foundation for the large-scale production and application of sulfide all-solid-state batteries.