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stables at 82% of its original performance when immersed in the electrolyte. Notably, even after being air-dried for 135 days, its thermopower returns to 87% of the original value through replenishing electrolyte solution and its 3D shape fully recovers. Meanwhile, the dual-driven nature for moisture and temperature as well as the pH sensitivity of this network is systematically investigated. The maximum output voltage of a single sample reaches 0.215 V at a ΔT of 3.7 K, and it works continuously for more than 26 h. This study offers a new approach to overcoming the short-term service bottleneck of i-TEs and provides a practical scheme for the multi-source drive of self-powered TE equipment.
Zhang et al. (Tue,) studied this question.