Osmotic pressure energy storage

Can osmotic energy be used for portable electronics?

The practicality of osmotic energy for portable electronics has been challenging despite recent advancements. Researchers devise a method to store iontronic energy in a polymer film based on osmotic effects, achieving high energy and power density.

What is the power density of osmotic power sources?

Although the conversion of osmotic energy has been reported to be boosted by a three-dimensional hydrogel interface 14, the power density of most osmotic power sources is generally small, ranging from 0.35 W m −2 to around 5 W m −2 in previous reports 14, 15, 16, 17.

What is osmotic energy?

Compared with other energy sources, such as wind and solar energy, osmotic energy further has the advantage of minimal daily variability. Membrane-based reverse electrodialysis, which was first proposed in 1954, is a key technology to capture this blue energy 58.

Can iontronic energy be stored based on osmotic effects?

This work introduces an approach for storing iontronic energy based on osmotic effects, providing a platform for developing renewable, ultrathin and safe power sources. The practicality of osmotic energy for portable electronics has been challenging despite recent advancements.

What is osmotic energy conversion?

Osmotic energy conversion can be described by thermodynamics. A concentration gradient causes a net flow of counterions inside a nanofluidic channel. In an infinitesimal time unit (d t), the Gibbs free energy (d G) released as a result of mixing can be described as:

Can nanofluidic membranes harvest osmotic energy in high-salinity solutions?

Harvesting osmotic energy in real world high-salinity solutions poses great challenges, authors propose nanofluidic membranes with a dual separation mechanism based on vermiculite nanosheets with an isomorphic substitution structure, showing excellent energy conversion in hypersaline environments.