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<p>This study systematically explored the influence of Pr doping on the properties of zinc oxide (ZnO) thermoelectric materials and their application potential in anti-mold and easy-clean coatings for tobacco leaf storage cabinets. Experimental results show that Pr doping significantly alters multiple characteristics of ZnO. Structurally, XRD analysis reveals no formation of impurity phases, but the lattice constant increases due to the ionic radius difference between Pr<sup>3</sup>⁺/Pr<sup>4</sup>⁺ and Zn<sup>2</sup>⁺, as well as the charge compensation mechanism during the solid solution process. In terms of performance, the electrical conductivity significantly improves due to a substantial increase in carrier concentration, although mobility decreases due to scattering by impurities, phonons. The absolute value of the Seebeck coefficient decreases, but the power factor significantly increases owing to the rise in electrical conductivity. Thermal conductivity and lattice thermal conductivity decrease primarily due to lattice distortion, scattering by impurities and defects, electron–phonon interactions. Vickers hardness is enhanced through mechanisms such as lattice distortion strengthening. These property changes have positive implications for coatings in tobacco leaf storage cabinets: the increase in electrical conductivity and power factor enhances the coating’s thermoelectric effect, facilitating self-power supply and temperature regulation to improve anti-mold and easy-clean performance. The decrease in thermal conductivity optimizes temperature control and boosts the thermoelectric figure of merit. The improvement in Vickers hardness enhances the coating’s wear resistance and damage tolerance, ensuring long-term stable operation. Pr doping provides a new pathway for applying ZnO in anti-mold and easy-clean coatings for tobacco leaf storage cabinets and significantly enhances the material’s comprehensive properties. However, optimization opportunities remain, such as further balancing performance parameters and exploring the optimal doping concentration and preparation process. Future research may focus on multi-element co-doping, process optimization, and long-term monitoring of the coating’s actual application performance to promote the widespread adoption of Pr-doped ZnO in coatings for tobacco leaf storage cabinets.</p>

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Application and performance research of zinc oxide thermoelectric materials in anti-mildew and easy-to-clean coatings for tobacco leaf storage cabinets

  • 期刊论文

  • 发表日期：

    2025年8月23日

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  • Bohan Jin,
  • Wei Wei,
  • Baoxin Ran,
  • Nan Ma,
  • Shengyu Zhou,
  • Xia Liu,
  • Bo Feng

摘要

This study systematically explored the influence of Pr doping on the properties of zinc oxide (ZnO) thermoelectric materials and their application potential in anti-mold and easy-clean coatings for tobacco leaf storage cabinets. Experimental results show that Pr doping significantly alters multiple characteristics of ZnO. Structurally, XRD analysis reveals no formation of impurity phases, but the lattice constant increases due to the ionic radius difference between Pr3⁺/Pr4⁺ and Zn2⁺, as well as the charge compensation mechanism during the solid solution process. In terms of performance, the electrical conductivity significantly improves due to a substantial increase in carrier concentration, although mobility decreases due to scattering by impurities, phonons. The absolute value of the Seebeck coefficient decreases, but the power factor significantly increases owing to the rise in electrical conductivity. Thermal conductivity and lattice thermal conductivity decrease primarily due to lattice distortion, scattering by impurities and defects, electron–phonon interactions. Vickers hardness is enhanced through mechanisms such as lattice distortion strengthening. These property changes have positive implications for coatings in tobacco leaf storage cabinets: the increase in electrical conductivity and power factor enhances the coating’s thermoelectric effect, facilitating self-power supply and temperature regulation to improve anti-mold and easy-clean performance. The decrease in thermal conductivity optimizes temperature control and boosts the thermoelectric figure of merit. The improvement in Vickers hardness enhances the coating’s wear resistance and damage tolerance, ensuring long-term stable operation. Pr doping provides a new pathway for applying ZnO in anti-mold and easy-clean coatings for tobacco leaf storage cabinets and significantly enhances the material’s comprehensive properties. However, optimization opportunities remain, such as further balancing performance parameters and exploring the optimal doping concentration and preparation process. Future research may focus on multi-element co-doping, process optimization, and long-term monitoring of the coating’s actual application performance to promote the widespread adoption of Pr-doped ZnO in coatings for tobacco leaf storage cabinets.