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Publication
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| Title of Article |
Flexible Thermoelectric Paper and Its Thermoelectric Generator from Bacterial Cellulose/Ag2Se Nanocomposites |
| Date of Acceptance |
22 February 2022 |
| Journal |
| Title of Journal |
ACS Applied energy materials |
| Standard |
SCOPUS |
| Institute of Journal |
ACS Publications |
| ISBN/ISSN |
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| Volume |
2022 |
| Issue |
5 |
| Month |
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| Year of Publication |
2022 |
| Page |
3489-3501 |
| Abstract |
In this research, a flexible thermoelectric (TE)
paper was fabricated from bacterial cellulose/silver selenide (BC/
Ag2Se) nanocomposites. Ag2Se particles were in situ synthesized in
the network of BC nanofibers. Several synthesis parameters that
crucially affect the formation of Ag2Se particles in the BC structure
were investigated to understand the phase formation mechanism.
Under the optimized conditions, the BC/Ag2Se paper with a large
proportion of Ag2Se up to 75 wt % was successfully obtained. The
in situ synthesis limits the Ag2Se formation within the nanopores
of the BC structure. As a result, the submicrosize Ag2Se particles
with a narrow size distribution were homogeneously dispersed in
the BC nanofiber network. The microstructure was further
improved by hot-pressing, which increases the density of the
BC/Ag2Se paper and makes the BC layered structure more compact. These contributed to a significant enhancement of the TE
properties, with the electrical conductivity of 23,000 S/m and the Seebeck coefficient of −167 μV/K at 400 K. The power factor was
642 μW/mK2 at 400 K, a very high value compared to other flexible TE research. The measurement of thermal conductivity yielded
the κ value of 0.36 W/mK at 400 K, which led to the maximum ZT of 0.70 at 400 K. To demonstrate the TE conversion, five BC/
Ag2Se paper pieces were connected in series to construct a TE module. The module is very flexible and can be curved to attach to
any arbitrary shape of the hot/cold surfaces. In addition, the process for fabricating the BC/Ag2Se paper is scalable without any use
of advanced or expensive instruments. This makes it a very attractive choice as a flexible TE generator. |
| Keyword |
thermoelectric, Ag2Se, bacterial cellulose, nanocomposite, flexible module, ZT |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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