An Ultrastable Wearable Electrochemical Sensor for Prolonged Monitoring of Electrolyte Loss and Hydration

This is the authors' abstract. We don't add key points for this paper.

) and secretion rate. The electrolyte sensor features internal calibration and enhanced interfacial stability through a semisolid electrolyte and a hydrophobic ion-to-electron transducer. The electrolyte sensors exhibited exceptional stability and eliminated the need for manual calibration, making it user-friendly and significantly extending their operational lifespan with a shelf life of over one month. Additionally, the sweat rate sensor, designed with a droplet-based sweat dispensing system, ensures accurate and prolonged sweat rate monitoring during strenuous activities. We validated the r-SENSER in individuals engaged in various indoor and outdoor activities for loss of electrolytes and hydration analysis. We envision that r-SENSER could play a transformational role in sports monitoring and health management, enabling proactive and informed decision-making without the need for professional oversight.