High Thermopower of Agarose-Based Ionic Thermoelectric Gel Through Micellization Effect Decoupling the Cation/Anion Thermodiffusion

Qikai Li; Dangkai Yu; Shuaihua Wang; Xinbo Zhang; Yuchen Li; Shien-Ping Feng; Weishu Liu

doi:10.1002/adfm.202305835

Author(s)

Qikai Li
Dangkai Yu
Shuaihua Wang
Xinbo Zhang
Yuchen Li
Weishu Liu

Related Research Unit(s)

Department of Systems Engineering

Detail(s)

Original language	English
Article number	2305835
Journal / Publication	Advanced Functional Materials
Volume	33
Issue number	49
Online published	20 Jul 2023
Publication status	Published - 1 Dec 2023

Link(s)

DOI	DOI https://doi.org/10.1002/adfm.202305835 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85165247844&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(fef02357-5e86-4884-a0f9-32b02c1f4e4d).html

Abstract

Ionic thermoelectric (i-TE) gels can have a high thermopower, if the thermodiffusion of mobile cation/anion is decoupled, attracting increasing attentions. Herein, it is shown a high p-type i-TE thermopower of 41.8 mV K⁻¹ in agarose-based ionic thermoelectric gels of AG-x Na:DBS (AG: agarose, Na:DBS: sodium dodecyl benzene sulfonate). The exclusively high thermopower is relative to the successfully decoupling the thermodiffusion of cation Na⁺ and anion DBS⁻. A unique porous structure is formed due to the micellization of the amphiphilic DBS⁻ with the hydrophilic benzenesulfonic group attached to the hydrous agarose gel chains, while the hydrophobic alkyl chain point to the pore centers. As a result, the DBS⁻ micelles are almost immobile as compared with Na⁺, which can be reconsidered as a part of the gel matrix. The work shines a light on decoupling of cation/anion thermodiffusion through tailoring the microstructure of the quasi-solid i-TE materials. © 2023 Wiley-VCH GmbH.

Research Area(s)

agarose, decoupling effects, Ionic thermoelectric gels, micellization, thermodiffusion

Citation Format(s)

[ RIS ] [ BibTeX ]

High Thermopower of Agarose-Based Ionic Thermoelectric Gel Through Micellization Effect Decoupling the Cation/Anion Thermodiffusion. / Li, Qikai; Yu, Dangkai; Wang, Shuaihua et al.
In: Advanced Functional Materials, Vol. 33, No. 49, 2305835, 01.12.2023.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Li, Q, Yu, D, Wang, S, Zhang, X, Li, Y, Feng, S-P & Liu, W 2023, 'High Thermopower of Agarose-Based Ionic Thermoelectric Gel Through Micellization Effect Decoupling the Cation/Anion Thermodiffusion', Advanced Functional Materials, vol. 33, no. 49, 2305835. https://doi.org/10.1002/adfm.202305835

Li, Q., Yu, D., Wang, S., Zhang, X., Li, Y., Feng, S.-P., & Liu, W. (2023). High Thermopower of Agarose-Based Ionic Thermoelectric Gel Through Micellization Effect Decoupling the Cation/Anion Thermodiffusion. Advanced Functional Materials, 33(49), Article 2305835. https://doi.org/10.1002/adfm.202305835

Li Q, Yu D, Wang S, Zhang X, Li Y, Feng SP et al. High Thermopower of Agarose-Based Ionic Thermoelectric Gel Through Micellization Effect Decoupling the Cation/Anion Thermodiffusion. Advanced Functional Materials. 2023 Dec 1;33(49):2305835. Epub 2023 Jul 20. doi: 10.1002/adfm.202305835

Li, Qikai ; Yu, Dangkai ; Wang, Shuaihua et al. / High Thermopower of Agarose-Based Ionic Thermoelectric Gel Through Micellization Effect Decoupling the Cation/Anion Thermodiffusion. In: Advanced Functional Materials. 2023 ; Vol. 33, No. 49.