Work

Enhanced thermoelectric properties of flexible self-supporting carbon nanotube film/polypyrrole composites

Year: 2024

Type: article

Abstract: For energy harvesting by flexible thermoelectrics, composite materials have prospects for wearable electronics and require processing methods yielding composites with high thermoelectric performance. Here, we report the fabrication of flexible carbon nanotube film (CNTF)/polypyrrole (PPy) composites by in situ polymerization of PPy on the CNTF. The two-dimensional network structure of CNTF can solve the limitations on the thermoelectric performance of CNT/PPy caused by the poor dispersion and orientation of CNTs. The CNTF/PPy composites exhibit a maximum thermoelectric power factor of 369.2 μWm−1K−2 at 300 K, which is nearly twice of that of the CNTF (191.2 μWm−1K−2). The composites also display flexibility under repeated bending. Composites treated with pre-stretching obtain a higher power factor of 403.8 μWm−1K−2 at 320 K. This method provides a pathway for optimizing the thermoelectric properties of composites based on CNTF. The study is of importance for application prospects in the fields of thermoelectric conversion and multifunctional wearable electronics.

Source: Cell Reports Physical Science

DOI: 10.1016/j.xcrp.2024.102163

Authors: Xiaohua Liu, Jing Huang, Yong Du, Lei Wang, Per Eklund

Institutions: Shanghai Institute of Technology, Linköping University, Uppsala University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $5,460