|
| Abstract No.: |
|
Scheduled at:
|
Wednesday, June 07, 2017, Hall Y 4:05 PM
Session Young Professionals
|
|
| Title: |
Oxide based thermoelectric generator enabled by additive and layered manufacturing
|
|
| Authors: |
Hwasoo Lee* / Stony Brook University, USA
Sanjay Sampath / Center for Thermal Spray Research / Stony Brook University, USA
Ramachandran Chidambaram-Seshadri/ Center for Thermal Spray Research / Stony Brook University, USA
|
|
| Abstract: |
Sub-stoichiometric TiO2-x is deposited via atmospheric plasma spray process for testing thermoelectric (TEG) power generation for applications over relatively large areas with capabilities to operate at moderate to high temperatures where low-cost nature of the device is maximized to improve cost competitiveness. Multilayer assemblies of patterned p-n junctions allowed for fabrication of series and parallel connected thermoelectric elements allowing for enhancement in current, voltage and in some cases both. The results point to a potential pathway for a large scale fabrication of low-cost oxide based thermoelectric with potential applicability to moderate temperatures. The fabrication of module consists up to 72 couples of n-type TiO2-x and Ni elements connected electrically in series and parallel. With the max efficiency of 0.85% for the couple, the maximum electric power of the TEG is measured 2.43 mW at the temperature gradient of 663 K. Further improvement of the device can be made by introducing p-type material, where preliminary p-type material Li:Co3O4 was coupled with TiO2-x and achieved ZT of 0.153 for couple and max efficiency of 2.17%.
|
|