Volume 140, Issue 3 e53336
RESEARCH ARTICLE

Energy harvesting and temperature sensing thermoelectric devices based on the carbon template method

Nan Jiang

Nan Jiang

Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, China

Contribution: Conceptualization (lead), Data curation (lead), Writing - original draft (lead)

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Meijie Qu

Meijie Qu

Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, China

Contribution: Data curation (equal), Formal analysis (equal), Methodology (equal), Software (lead)

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Hai Wang

Hai Wang

Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, China

Contribution: ​Investigation (lead), Resources (equal), Software (equal), Supervision (equal), Validation (equal), Writing - original draft (equal)

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Yuezhen Bin

Yuezhen Bin

Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, China

Contribution: ​Investigation (equal), Methodology (equal), Resources (equal), Validation (equal), Visualization (equal), Writing - review & editing (equal)

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Rui Zhang

Corresponding Author

Rui Zhang

Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, China

Correspondence

Rui Zhang and Ping Tang, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, #2 Linggong Road, Dalian 116024, China.

Email: [email protected] and [email protected]

Contribution: Conceptualization (equal), Formal analysis (equal), ​Investigation (equal), Validation (equal), Writing - original draft (lead), Writing - review & editing (lead)

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Ping Tang

Corresponding Author

Ping Tang

Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, China

Correspondence

Rui Zhang and Ping Tang, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, #2 Linggong Road, Dalian 116024, China.

Email: [email protected] and [email protected]

Contribution: Conceptualization (equal), Formal analysis (equal), Project administration (lead), Supervision (lead), Validation (lead), Visualization (equal), Writing - review & editing (equal)

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First published: 03 November 2022

Funding information: MOST Innovation Team, Grant/Award Number: 2018RA4002; National Natural Science Foundation of China, Grant/Award Number: 22073015

Abstract

A series of self-supporting carbon nanomaterial films with different morphologies were employed as conductive templates for n-junction after polyethyleneimine (PEI) doping by taking advantages of the entanglement between carbon nanotubes. With the assistance of dimethyl sulfoxide (DMSO)-treated poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) films as p-junction, flexible and light-weight thermoelectric generators (TEGs) were assembled. The effect of the morphology of the carbon nanomaterial, including multi-walled carbon nanotube (MWCNT), whisker carbon nanotube (WSCNT), and graphene on the electrical conductivity, mechanical properties and morphology of n-junction was investigated, on basis of which thermoelectric properties of TEG were evaluated. The properties of the three carbon-based self-supporting films show significant differences. The MWCNT/PEI film exhibits a tensile strength of up to 36.23 ± 0.57 MPa due to the high entanglement network density of MWCNT. The entanglement of WSCNT/MWCNT/PEI provides an ideal conductive template for PEI to prepare n-junction material. TEGs with PEDOT:PSS-DMSO and WSCNT/MWCNT/PEI as p- and n-junctions show high power generation performance and cyclability. The output power density is up to 4.6 nW/cm2 at ΔT = 42.0 K, matched to a suitable load. With its fast response and slow recovery, this TEG is expected to be used for human health monitoring and energy storage.

CONFLICT OF INTEREST

The authors declare no conflicts of interest.

DATA AVAILABILITY STATEMENT

All data generated or analysed during this study are included in this published article (and its supplementary information files).

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.