Electrochemical devices based in mixing entropic battery for blue energy recovery. A review

Abstract

Blue energy, an intriguing alternative, takes advantage of the chemical energy that is spontaneously released when two water solutions with different salt concentrations coincide, such as at the mouths of rivers that flow into ocean basins. This article aggregates the latest research on this form of energy, emphasizing the mixing entropic battery (MEB) as a fundamental electrochemical device for recovering entropic energy. SEM technology takes advantage of the redox reactions between cathodic and anodic materials to optimize energy recovery from salinity gradients. We review best practices in device optimization, highlighting the most effective redox reactions and materials employed. By assessing the volumetric availability and theoretical potential of blue energy, our findings underscore the viability of this renewable energy source and justify continued research efforts. This comprehensive synthesis aims to inform and guide future blue energy extraction and recovery innovations.