Phase-transition-promoted thermoelectric textiles based on twin surface-modified CNT fibers

Long Yu, Xinyu Liu, Boxuan Zhang, Huijie Hu, Kunlin Chen, Haoxuan Li, David J. S. Birch, Yu Chen, Hua Qin, Peng Gu

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
20 Downloads (Pure)

Abstract

With the fast development of new science and technology, wearable devices are in great demand in modern human daily life. However, the energy problem is a long-lasting issue to achieve real smart, wearable, and portable devices. Flexible thermoelectric generators (TEGs) based on thermoelectric conversion systems can convert body waste heat into electricity with excellent flexibility and wearability, which shows a new direction to solving this issue. Here in this work, polyethylenimine (PEI) and gold nanoparticles (Au NPs) twin surface-modified carbon nanotube fibers (CNTFs) were designed and prepared to fabricate thermoelectric textiles (TET) with high performance, good air stability, and high-efficiency power generation. To better utilize the heat emitted by the human body, microencapsulated phase change materials (MPCM) were coated on the hot end of the TET to achieve the phase-transition-promoted TET. MPCM-coated TET device could generate 25.7% more energy than the untreated control device, which indicates the great potential of the phase-transition-promoted TET.
Original languageEnglish
Pages (from-to)18030–18039
Number of pages10
JournalACS Applied Materials and Interfaces
Volume16
Issue number14
Early online date30 Mar 2024
DOIs
Publication statusPublished - 10 Apr 2024

Keywords

  • CNT
  • gold nanoparticles
  • thermoelectric textiles
  • twin-surface modification
  • microencapsulated phase change materials

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