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<p>This work employed a novel, easy, and environmentally friendly method for synthesizing platinum nanoparticles over a multi-walled carbon nanotubes (CNT<sub>f</sub>) surface, employing thiophene (TH) as a reducing agent and stabilizer. The nanoparticle size depends on Pt concentration and TH to be employed as counter electrodes in the I<sup>−</sup>/I<sub>3</sub><sup>−</sup> reduction reaction and compared with the traditional Pt counter electrode. The fabricated counter electrodes were evaluated in dye-sensitized solar cells (DSSCs). The results indicate Pt<sub>2</sub>/CNT<sub>f</sub> hybrid material counter electrode presents a charge transfer resistance (<i>R</i><sub><i>CT</i></sub>) of 4.20&#xa0;Ω, and the photovoltaic parameters of the cell were <i>Jsc</i> = 11.23 (mA/cm<sup>2</sup>); <i>V</i><sub><i>OC</i></sub> = 0.781&#xa0;V, and <i>FF</i> = 60.6, with an efficiency of 5.32%. The traditional Pt counter electrode shows an (<i>R</i><sub><i>CT</i></sub>) of 8.65&#xa0;Ω, and the photovoltaic parameters of the cell were <i>Jsc</i> = 11.37 (mA/cm); <i>V</i><sub><i>OC</i></sub> = 0.769&#xa0;V and <i>FF</i> = 64.5, with an efficiency of 5.94%. The Pt<sub>2</sub>/CNT<sub>f</sub> hybrid material performs similarly to traditional Pt counter electrodes, but the Pt<sub>2</sub>/CNT<sub>f</sub> hybrid presents five times less Pt concentration.</p>

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Synthesis of Pt Particles Over CNT by Thiophene Oxidation, Employed as a Cathodic Material in DSSC

  • 期刊论文

  • 发表日期：

    2025年6月10日

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  • Carolina Silva-Carrillo,
  • Rosa María Félix-Navarro,
  • Brenda Alcántar-Vázquez,
  • Paulina Vargas-Rodriguez,
  • Karla Alonso-Romero,
  • Miguel Alejandro Gómez-Cardenas,
  • Shu Wai Li-Ho,
  • Edgar Alonso Reynoso-Soto

摘要

This work employed a novel, easy, and environmentally friendly method for synthesizing platinum nanoparticles over a multi-walled carbon nanotubes (CNTf) surface, employing thiophene (TH) as a reducing agent and stabilizer. The nanoparticle size depends on Pt concentration and TH to be employed as counter electrodes in the I−/I3− reduction reaction and compared with the traditional Pt counter electrode. The fabricated counter electrodes were evaluated in dye-sensitized solar cells (DSSCs). The results indicate Pt2/CNTf hybrid material counter electrode presents a charge transfer resistance (RCT) of 4.20 Ω, and the photovoltaic parameters of the cell were Jsc = 11.23 (mA/cm2); VOC = 0.781 V, and FF = 60.6, with an efficiency of 5.32%. The traditional Pt counter electrode shows an (RCT) of 8.65 Ω, and the photovoltaic parameters of the cell were Jsc = 11.37 (mA/cm); VOC = 0.769 V and FF = 64.5, with an efficiency of 5.94%. The Pt2/CNTf hybrid material performs similarly to traditional Pt counter electrodes, but the Pt2/CNTf hybrid presents five times less Pt concentration.