Recycled carbon fibre/Bi2Te3 and Bi2S3 hybrid composite doped with MWCNTs for thermoelectric applications

Priyanka Jagadish, Mohammad Khalid, Nowshad Amin, Mohammad Taghi Hajibeigy, Lau Phei Li, Arshid Numan, Nabisab Mujawar Mubarak, Rashmi Walvekar, Andy Chan

Research output: Contribution to journalArticle

Abstract

In this study, a cost-effective thermoelectric generator was developed from recycled carbon fibre (RCF) composites incorporated with multi-walled carbon nanotubes (MWCNT) doped bismuth telluride (Bi2Te3) and bismuth sulphide (Bi2S3). A facile approach utilising hot compression and brushing was used to prepare a cost-effective inorganic RCF thermoelectric composite with varying content of MWCNT ranging from 0.05 to 0.20 wt%. This work investigated the effect of doping MWCNT in Bi2Te3 and Bi2S3 matrix and its corresponding effect on thermoelectric, morphological, structural and thermal properties of RCF thermoelectric composite. The thermoelectric properties of RCF composites were optimised at 0.10 wt % (1.044 μW K−2m−1) and 0.15 wt% (0.849 μW K−2m−1) of MWCNT for doped Bi2Te3 and Bi2S3 respectively. The addition of MWCNT reduced the difference in power factor between RCF-Bi2Te3 and RCF-Bi2S3 from 52% to 19%. The presence of MWCNT in the Bi2S3 matrix overcame the high resistivity of Bi2S3 and improved its thermoelectric properties as MWCNT provided a conductive pathway for efficient electron transfer. Thus, MWCNT doped Bi2S3 RCF composites is an alternative to telluride free thermoelectric generators.

Original languageEnglish
Article number107085
JournalComposites Part B: Engineering
Volume175
DOIs
Publication statusPublished - 15 Oct 2019

Fingerprint

Carbon Nanotubes
Carbon fibers
Carbon nanotubes
Composite materials
Bismuth
carbon fiber
Hot pressing
Structural properties
Costs
Thermodynamic properties
Doping (additives)
Electrons

Keywords

  • Bismuth sulphide
  • Bismuth telluride
  • Carbon nanotubes
  • Electrical resistivity
  • Seebeck coefficient
  • Thermoelectric

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

Recycled carbon fibre/Bi2Te3 and Bi2S3 hybrid composite doped with MWCNTs for thermoelectric applications. / Jagadish, Priyanka; Khalid, Mohammad; Amin, Nowshad; Hajibeigy, Mohammad Taghi; Li, Lau Phei; Numan, Arshid; Mubarak, Nabisab Mujawar; Walvekar, Rashmi; Chan, Andy.

In: Composites Part B: Engineering, Vol. 175, 107085, 15.10.2019.

Research output: Contribution to journalArticle

Jagadish, P, Khalid, M, Amin, N, Hajibeigy, MT, Li, LP, Numan, A, Mubarak, NM, Walvekar, R & Chan, A 2019, 'Recycled carbon fibre/Bi2Te3 and Bi2S3 hybrid composite doped with MWCNTs for thermoelectric applications', Composites Part B: Engineering, vol. 175, 107085. https://doi.org/10.1016/j.compositesb.2019.107085
Jagadish, Priyanka ; Khalid, Mohammad ; Amin, Nowshad ; Hajibeigy, Mohammad Taghi ; Li, Lau Phei ; Numan, Arshid ; Mubarak, Nabisab Mujawar ; Walvekar, Rashmi ; Chan, Andy. / Recycled carbon fibre/Bi2Te3 and Bi2S3 hybrid composite doped with MWCNTs for thermoelectric applications. In: Composites Part B: Engineering. 2019 ; Vol. 175.
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