Chinese teams salt battery harnesses osmotic power at river estuaries [Video]

Researchers have created a semipermeable membrane that generates electricity by absorbing osmotic energy from salt gradients.

The advanced membrane significantly boosted the osmotic energy extracted from salt gradients, such as those found in estuaries where fresh and saltwater mix.

The Chinese team used a unique nanofluidic membrane with multiple layers. Small cellulose channels assist in ion movement on the inside, while on the outside, a polyaniline network facilitates electron movement.

In laboratory tests, researchers claim the new design’s output power density was more than twice as high as commercial membranes.

An advanced eco-friendly membrane

Estuaries, where freshwater rivers merge with the salty sea, offer fantastic opportunities for birdwatching and kayaking. These dynamic zones also host a blend of waters with varying salt concentrations, potentially …