Mechano-electrochemical energy harvesting and self-powered sensing via dynamic liquid metal-electrolyte interfaces.

A liquid metal mechano-electrochemical energy harvester (LMMEEH) generates electricity from motion via dynamically regulated liquid metal–electrolyte interfaces, reaching 140.2 μW/m².

• Why it matters: Wearable and soft electronics need higher power density and scalable electrodes that can adapt to changing contact conditions, which limits many existing energy-harvesting approaches.
• What they did: The device uses mechanical motion to alter interfacial area and drive asymmetric Faradaic reactions tied to dynamic oxide formation and dissolution, enabling rapid interface reformation.
• The result: It delivers 140.2 μW/m², scales to a 40-unit array producing 2 volts, and supports programmed three-phase AC plus wave lighting, pressure sensing, and real-time physiological monitoring.

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