Recent breakthroughs in 2024 and 2026 have introduced batteries that can physically expand like rubber without losing performance.
By pre-stretching intercalation electrodes, researchers can regulate "phase transformation voltages," making the materials less susceptible to fracturing.
Broader research is "stretching" the capacity limits of Li-ion technology through material innovation:
Standard charging/discharging cycles cause electrodes to expand and compress, creating microcracks that degrade capacity over time.
This approach allows batteries to operate in a wider voltage window , which directly increases their efficient energy storage capacity and extends their overall lifespan. 2. Fully Stretchable Batteries for Wearables