|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications X
||NOW ON-DEMAND ONLY - C-1: Flexible n-type Chalcopyrite/PEDOT:PSS/Graphene Hybrid Film for Thermoelectric Device Harvesting Low Grade Heat
||Yanan Wang, Hong Pang, Quansheng Guo, Naohito Tsujii, Takao Mori
|On-Site Speaker (Planned)
Combining inorganic thermoelectric materials with conductive polymers is one promising strategy in flexible thermoelectric (FTE) films and devices community. As the inorganic thermoelectric fillers tried up to now have been constituted of scarce or toxic elements and most FTE materials are p-type, we explored the Zn-doped chalcopyrite as inorganic fillers for flexible n-type FTE films. We fabricated the films from custom-design of Cu1-xZnxFeS2/PEDOT:PSS to optimum-design of Cu0.98Zn0.02FeS2/PEDOT:PSS/graphene by drop-casting method assisted with cold-pressing. TE properties elucidate that, compared with binary film, a 4-fold enhancement on electrical conductivity was observed in ternary film, leading to an enhancement in power factor. The ternary film preserves > 80% of the electrical conductivity after 2000 bending times. A five-leg thermoelectric prototype was made of optimum ternary films, generating a voltage of 4.8 mV at ΔT = 6.5℃. Such an evolution of an inexpensive chalcopyrite-based composite film exhibits potential for wearable TE energy conversion applications.
||Energy Conversion and Storage, Composites, Polymers