Breakthrough in PEI Thermocells for Low-Grade Heat Harvesting
- Apr 13
- 1 min read
Our research team has successfully developed a polyethyleneimine-added thermocell with enhanced thermoelectric performance and stability. This work was recently published in Nature Communications. The additive triggers four mechanisms: enhanced heat-triggered reactions, improved electrode ion movement, cool side ion clustering for higher voltage, and accelerated hot side processes, dramatically boosting power generation by over five times. Its self-limiting chemistry maintains stability for over 1,000 hours. A prototype panel produces more than 5 volts and 7.5 milliwatts across a 50°C gap, unlocking practical green electricity from everyday waste heat sources.
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