High Figure-of-Merit Telluride-Based Flexible Thermoelectric Films through Interfacial Modification via Millisecond Photonic-Curing for Fully Printed Thermoelectric Generators.

The thermoelectric generator (TEG) shows great promise for energy harvesting and waste heat recovery applications. Cost barriers for this technology could be overcome by using printing technologies. However, the development of thermoelectric (TE) materials that combine printability, high-efficiency, and mechanical flexibility is a serious challenge.

Photonic Curing Enables Ultrarapid Processing of Highly Conducting β-CuSe Printed Thermoelectric Films in Less Than 10 ms.

It has been a challenge to obtain high electrical conductivity in inorganic printed thermoelectric (TE) films due to their high interfacial resistance. In this work, we report a facile synthesis process of Cu-Se-based printable ink for screen printing. A highly conducting TE β-CuSe phase forms in the screen-printed Cu-Se-based film through ≤10 ms sintering using photonic-curing technology, minimizing the interfacial resistance.

Realizing High Thermoelectric Performance of Bi-Sb-Te-Based Printed Films through Grain Interface Modification by an In Situ-Grown β-CuSe Phase.

It has been a substantial challenge to develop a printed thermoelectric (TE) material with a figure-of-merit > 1. In this work, high p-type BiSbTe-based printable TE materials have been advanced by interface modification of the TE grains with a nonstoichiometric β-CuSe-based inorganic binder (IB) through a facile printing-sintering process. As a result, a very high TE power factor of ∼17.

High-Performance Ag-Se-Based n-Type Printed Thermoelectric Materials for High Power Density Folded Generators.

High-performance Ag-Se-based n-type printed thermoelectric (TE) materials suitable for room-temperature applications have been developed through a new and facile synthesis approach. A high magnitude of the Seebeck coefficient up to 220 μV K and a TE power factor larger than 500 μW m K for an n-type printed film are achieved. A high figure-of-merit ∼0.

Giant Enhancement in High-Temperature Thermoelectric Figure-of-Merit of Layered Cobalt Oxide, LiCoO, Due to a Dual Strategy-Co-Substitution and Lithiation.

The chemical composition of LiCoO, a layered oxide commonly used as electrode in batteries, was changed to LiCoNiO by a combination of substitution and lithiation to enhance the thermoelectric figure-of-merit at high temperatures. Substitution of Ni as well as lithiation does not change the crystal structure, R3̅m. The lattice parameters c and a are found to increase slightly but maintain a nearly constant ratio, 4.