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Thermoelectric energy is one of the approaches in applying renewable energy as the world shifts from traditional energy sources. Thermoelectric energy involves the direct conversion of heat energy to electrical energy, and there are many approaches to achieve this. This study investigates the application of MXene Ti2CTx as a conductive particle additive to a conventional TEC redox system of ferro/ferricyanide aqueous solution at various MXene weight percentages: 0 wt%, 5 mwt%, 16 mwt%, 40 mwt%, and 50 mwt%, respectively. The MXene is synthesized using direct HF etching, and the product is confirmed by XRD and Raman analysis. The Seebeck coefficient of various weight percentages of MXene in 0.2 M ferro/ferricyanide aqueous solution is found to range from − 0.273 to − 1.4 mV/K, which is higher than the standalone ferro/ferricyanide aqueous solution with a Seebeck coefficient of 1.2 mV/K. The power generation of MXene additive at a temperature difference of 30 K shows the highest value for 50 mwt%, with power value of 89.52 mW/m3, which is higher than the standalone ferro/ferricyanide aqueous solution with a power density value of 52 mW/m3. Hence, this study opens new perspectives on developing a new class of TEC materials based on the MXene material group for TEC performance enhancement.

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Low Grade Heat Waste Energy Harvesting Using 2D MXene Ti2CTx Additive in Thermoelectrochemical Cell

  • 会议论文

  • 发表日期：

    2025年

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  • Chieng Neng Teik,
  • Muhammad Irsyad Iskandar Mohamed Idris,
  • Nurul Fathini Julhaji,
  • Nur Fadzilah Basri,
  • Megat Muhammad Ikhsan Megat Hasnan

摘要

Thermoelectric energy is one of the approaches in applying renewable energy as the world shifts from traditional energy sources. Thermoelectric energy involves the direct conversion of heat energy to electrical energy, and there are many approaches to achieve this. This study investigates the application of MXene Ti2CTx as a conductive particle additive to a conventional TEC redox system of ferro/ferricyanide aqueous solution at various MXene weight percentages: 0 wt%, 5 mwt%, 16 mwt%, 40 mwt%, and 50 mwt%, respectively. The MXene is synthesized using direct HF etching, and the product is confirmed by XRD and Raman analysis. The Seebeck coefficient of various weight percentages of MXene in 0.2 M ferro/ferricyanide aqueous solution is found to range from − 0.273 to − 1.4 mV/K, which is higher than the standalone ferro/ferricyanide aqueous solution with a Seebeck coefficient of 1.2 mV/K. The power generation of MXene additive at a temperature difference of 30 K shows the highest value for 50 mwt%, with power value of 89.52 mW/m3, which is higher than the standalone ferro/ferricyanide aqueous solution with a power density value of 52 mW/m3. Hence, this study opens new perspectives on developing a new class of TEC materials based on the MXene material group for TEC performance enhancement.