Formulation and optimization of copper selenide/PANI hybrid screen printing ink for enhancing the power factor of flexible thermoelectric generator: A synergetic approach

Ramakrishna Nayak, Prakasha Shetty, Selvakumar M, Ashok Rao, Sriram K V, Shivananda Wagle, Sandeep Nayak, Vinod Kamath, Nakul Shetty, Mohammad Saquib

Research output: Contribution to journalArticlepeer-review

Abstract

The stunning thermoelectric behavior of inorganic/organic hybrids and the lack of information on screen-printed flexible thermoelectric generators based on Cu3Se2 and Polyaniline for low-temperature applications have motivated this work. The synergic influence of various acid dopants, concentration, and annealing temperature of polyaniline on the power density of Cu3Se2/PANI ink-based flexible thermoelectric generator is explored. The presence of 1.5 wt% of H2SO4-PANI, annealed at 60 °C, decreased the bandgap and electrical resistance of Cu3Se2 by 11.96 % and 29.4 %, respectively. As a result, an increase of 46.06 % in the Seebeck coefficient and 242 % in the power output is achieved, which is many folds higher than the few reported works using novel materials. In addition, the Cu3Se2/H2SO4-PANI ink-based flexible thermoelectric generator with eight legs exhibited a maximum power output, power density, and power factor of 25.69 nW, 23.79 mW/m2, and 0.77 nW/m2K2 at ΔT = 100 °C, respectively under external load.

Original languageEnglish
Pages (from-to)25779-25791
Number of pages13
JournalCeramics International
Volume50
Issue number14
DOIs
Publication statusPublished - 15-07-2024

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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