Strain-Induced Rolled Thin Films for Lightweight Tubular Thermoelectric Generators

Devendra Singh, Arwa T. Kutbee, Mohamed T. Ghoneim, Aftab M. Hussain, Muhammad Mustafa Hussain

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Thermoelectric generators (TEGs) are interesting energy harvesters of otherwise wasted heat. Here, a polymer-assisted generic process and its mechanics to obtain sputtered thermoelectric (TE) telluride material-based 3D tubular structures with unprecedented length (up to seamless 4 cm and further expandable) are shown. This length allows for large temperature differences between the hot and the cold ends, a critical but untapped enabler for high power generation. Compared with a flat slab, better area efficiency is observed for a rolled tube and compared with a solid rod architecture, a rolled tube uses less material (thus making it lightweight and cost effective) and has competitive performance advantage due to a smaller contact area. It is also shown that a tubular architecture thermopile-based TEG is able to generate up to 5 μW of power (eight pairs of p- and n-type thermopiles) through a temperature difference of 60 °C. The demonstrated process can play an important role in transforming 2D atomic crystal structure TE materials into 3D tubular thermopiles for effective TEG application, which can maintain higher temperature differences by longer distances between hot and cold ends.
Original languageEnglish (US)
Pages (from-to)1700192
JournalAdvanced Materials Technologies
Volume3
Issue number1
DOIs
StatePublished - Nov 24 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: M.M.H conceptualized and directed the study. D.S. carried out the experiment. A.T.K. assisted in visualization. A.M.H. worked on the mechanics. M.T.G. carried out the FEA modeling. The authors thank John Belk, Technical Fellow, Boeing Research and Development for the useful discussion to materialize this research work. This publication was based upon work supported by Boeing Company under Award No. 2014-091-1. D.S. is also thankful to Dr. Venkatesh Singaravelu who supported to carry out the PPMS data with Quantum Design instrument at Advanced Nanofabrication & Imaging Core Facility Lab, KAUST.

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