Time-Enhanced Performance of Oxide Thermoelectric Modules Based on a Hybrid p-n Junction.

ABSTRACT: The present challenge with all-oxide thermoelectric modules is their poor durability at high temperatures caused by the instability of the metal-oxide interfaces at the hot side. This work explains a new module concept based on a hybrid p-n junction, fabricated in one step by spark plasma co-sintering of Ca₃Co_4-x O_9+δ (CCO, p-type) and CaMnO_3-δ/CaMn₂O₄ (CMO, n-type). Different module (unicouple) designs were studied to obtain a thorough understanding of the role of the in situ formed hybrid p-n junction of Ca₃CoMnO₆ (CCMO, p-type) and Co-oxide rich phases (p-type) at the p-n junction (>700 °C) in the module performance. A time-enhanced performance of the modules attributed to this p-n junc

SUBMITTER: Kanas N 

PROVIDER: S-EPMC7807484 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature