A dual-layer hydrogel device achieves stable moisture energy harvesting with significant scalability, indicating its potential for efficient energy generation.
A dual-layer hydrogel device with asymmetric water–salt gradients achieves 96.4 µA cm −2 current density and stable moisture energy harvesting for over 500 hours, alongside scalability to 1000 cm 2 , enabling a single-module output exceeding 100 mA.
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Miao et al. (2026) studied this question.
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