Yanan Chen's Lab
Selected Publications
HT technology
The development of ultrahigh-temperature thermoelectric materials could enable thermoelectric topping of combustion
power cycles as well as extending the range of direct thermoelectric power generation in concentrated solar power. However,
thermoelectric operation temperatures have been restricted to under 1,500 K due to the lack of suitable materials. Here, we
demonstrate a thermoelectric conversion material based on high-temperature reduced graphene oxide nanosheets that can
perform reliably up to 3,000 K. After a reduction treatment at 3,300 K, the nanosheet film exhibits an increased conductivity
to ~4,000 S cm−1
at 3,000 K and a high power factor S2 σ= 54.5 µW cm−1 K−2. We report measurements characterizing the film’s
thermoelectric properties up to 3,000 K. The reduced graphene oxide film also exhibits a high broadband radiation absorbance
and can act as both a radiative receiver and a thermoelectric generator. The printable, lightweight and flexible film is attractive
for system integration and scalable manufacturing.