Solid-state batteries hold more juice, but keep cracking up. Now researchers know why
https://www.theregister.com/2026/04/23/solid_state_batteries_energy_storage/
Solid-state batteries promise bigger capacity and faster charging, but ceramic electrolytes trip up at the interface with electrodes. Researchers say the main issue is interfacial resistance that grows as the ceramic cracks under stress, choking ion flow and heating cells. They’ve started testing coatings and new ceramic blends to calm the interface and boost durability. Overcoming this hurdle could move solid-state tech from labs to cars and devices much sooner. The next steps are to prove it works across temperatures used in devices and to build manufacturing at scale, so the technology reaches market without pushing costs or compromising safety.