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Salinity gradient energy presents a promising opportunity for renewable energy, gaining significant interest in the sustainable power sector. This article presents an overview of the application of ion exchange membranes and reverse electrodialysis techniques to harness energy from salinity gradients in seawater, employing anthropomorphic terminology to enhance understanding. The main focus lies in the utilization of ion exchange membrane technology for power generation, with a particular emphasis on its current implementation status and underlying operational principles. The research aims to enhance readers' comprehension of salinity gradient energy in seawater and promote awareness of "energy security" through the use of descriptive language. [ABSTRACT FROM AUTHOR]

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This article mainly reviews the preparation methods of ion exchange membranes for electricity generation by reverse electrodialysis. It is reported that under different preparation methods, the obtained ion exchange membranes have different advantages and are suitable for the research status of different working conditions. The application of ion membranes with different properties in RED was analyzed, and the output power of commercial membranes and tailor-made membranes in reverse electrodialysis power generation systems were compared. The ion exchange membrane has high performance such as low membrane resistance, high ion permeation selectivity, and antifouling, which can significantly increase the output power of reverse electrodialysis. The ion exchange membrane plays a decisive role in the output power of the reverse electrodialysis power generation system. The preparation methods of high-performance ion exchange membranes are studied in order to promote the research and further development of ion exchange membrane preparation technology. [ABSTRACT FROM AUTHOR]