Researchers have created a semipermeable membrane that generates electricity by absorbing osmotic energy from salt gradients.
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.Estuaries, where freshwater rivers merge with the salty sea, offer fantastic opportunities for birdwatching and kayaking.
The membrane must maintain a low internal electrical resistance by enabling electrons to move freely in the ions’ opposite direction to boost its harvesting power even more. Thus, using eco-friendly materials, Dongdong Ye, Xingzhen Qin, and associates created a semipermeable membrane that would theoretically reduce internal resistance and increase output power.Ion and electron transport have independent channels in the RED membrane prototype developed by the team.
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