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Waste Heat Harvesting
In article number 2304308, Weitao Jiang and co‐workers arranged thermal diode‐pairs with fractal structures and dual‐direction thermal regulation ability in opposite directions to construct artificial hot‐ or cold‐zones. Thermoelectric‐legs as battery units and stacked parallel on diodes exhibit enhanced power‐supply capability with unprecedented long‐duration (more than hours),...
Thermal energy harvesting provides an opportunity for multi‐node systems to achieve self‐power autonomy. Thermoelectric generators (TEGs), either by thermocouple arrangement with higher‐aspect‐ratios or thermoelectric films overlay, are limited by the small temperature difference and its short‐duration (less than dozens of minutes), hindering the harvesting efficiency. Here, by introducing thermal...