Page 10/04/2017 14:55:28

Devendra's tubular thernoelectric generator paper in Adv. Mater. Tech.!

10/4/2017
​Devendra and our hard work has been paid off! It was an interesting undertaking to find out how we can develop a general strategy to fabricate thermoelectric generators from 2D ultra-thin film. With the increased global population, it is more important today to develop and harness as much as possible renewable and clean energy. This will help us addressing to imminent challenges: energy crisis and environmental pollution. Although, heat is the most abundant energy source, recycling otherwise wasted heat is yet to be widely used. Over the last sixty years, the trend in this particular area has been to enhance thermoelectric properties of the relevant materials. Yet, the progress is modest. While we are eagerly waiting for fundamental scientific breakthrough in this area, we are exploring all possible engineering options to enlarge temperature and to maintain it. Because, that directly impacts thermoelectric power generation. In that regard, forming tubular architecture from 2D ultra-thin film is the right strategy. And thus our contribution will be published in Adv. Mater. Tech.

 

Strain Induced Rolled Thin Films for Lightweight Tubular Thermoelectric Generators

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

Thermoelectric generators (TEGs) are interesting energy harvesters from otherwise wasted heat. Here we show, a polymer assisted generic process and its mechanics to obtain sputtered thermoelectric (TE) telluride materials based 3D tubular structures with unprecedented length (up to seamless 4 cm and further expandable). This length allows for large temperature differences between the hot and cold ends, a critical but untapped enabler for high power generation. Compared to flat slab, better area efficiency has observed for rolled tube and compared to a solid rod architecture, a rolled tube uses less material (thus making it lightweight and cost effective) and has competitive performance advantage due to lesser contact area. We also show tubular architecture thermopile based TEG is able to achieve a generated power up to 5 µW (8 pairs of p- and n-type thermopiles) through temperature difference of 60 ᴼC. Demonstrated process can play important role to transform 2D atomic crystal structure TE materials into 3D tubular thermopiles for effective TEG application which can maintain higher temperature difference by longer distance between hot and cold end.

Way to go, Devendra! Melvin will be in touch for catering the lunch sponsored by you!

 

PS. I don’t mind authentic Greek Salad J