Generate electricity 'cheaply' using salinity gradient

Experimental results of salinity gradient power generation using molybdenum disulfide (a power density, b current-voltage curve, c resistance, d power generation principle, e electrochemical reactions and electron transfer principles at d and e electrodes)

[Asia Economy Reporter Hwang Junho] Domestic researchers have developed an electrode material that can enhance the economic feasibility of salinity gradient power generation, which produces electricity by utilizing the salinity difference in seawater. It is expected to contribute to the expansion of salinity gradient power plants, which are 100% eco-friendly power generation.

The research team led by Dr. Jeong Namjo of the Marine Convergence Research Team at the Korea Institute of Energy Research announced on the 10th that they developed a molybdenum disulfide thin-film electrode material used as the electrode collector in salinity gradient power generation. Molybdenum disulfide is a compound combining molybdenum and sulfur and has semiconductor properties. The team used the inexpensive molybdenum disulfide material as an electrode catalyst, improving power generation efficiency while securing economic feasibility.

One method of salinity gradient power generation, reverse electrodialysis (RED), produces electricity by utilizing the potential difference generated when ions are separated and move between seawater and freshwater through ion exchange membranes within the stack. However, most systems have used expensive materials such as platinum, making it difficult to secure economic feasibility.

Dr. Jeong Namjo stated, "With the development of this electrode material synthesis technology, it will be possible to replace imported and expensive electrode materials in the water treatment field, greatly contributing to the development of domestic electrode material technology in related fields."

Meanwhile, the research results were published in Applied Surface Science, a world-renowned journal in the field of surface science.

This content was produced with the assistance of AI translation services.