Scientists have discovered that adding less than 2% calcium to sodium-ion battery cathodes creates a protective surface layer that completely prevents degradation from air and water exposure. While standard sodium-iron-manganese cathodes lose 35% of their capacity after just two days of air exposure, calcium-doped versions maintain full performance. This simple, affordable solution could finally make sodium-ion batteries a practical alternative to scarce lithium for renewable

Chinese researchers have achieved a breakthrough that sounds like science fiction – a solid-state battery that bends 20,000 times without breaking. This innovation solves critical problems in energy storage and could revolutionize wearable tech, flexible smartphones, and electric vehicles with 86% higher energy density.

Concrete has long been the backbone of our cities, but a new breakthrough suggests it could also power them. Researchers at MIT have...