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<p>Traditional dye-sensitized solar cells (DSSCs) rely on platinum pair electrodes (Pt-CE), but the scarcity, high cost, and insufficient electrochemical stability of platinum seriously restrict their large-scale application. In this study, B–N–F-doped hierarchical porous carbon (BNF-doped-APC) was successfully prepared as CE through a concentrated sulfuric acid-mediated pre-carbonization and thermochemical activation process using hydroxyl-rich biomass sucrose as the precursor, with the aim of achieving a sustainable alternative to Pt-CE. In the test, DSSCs with BNF-doped-APC-2 assembly demonstrated excellent reduction-catalytic activity (peak current density 1.7&#xa0;mA/cm<sup>2</sup>) and good electron transport capacity (Rct = 12.32 Ω cm<sup>2</sup>), achieving a photoelectric conversion efficiency (PCE) of 9.1%. It was significantly superior to Pt-CE (8.3%). Furthermore, the natural abundance and process simplicity of sucrose provide new ideas for the sustainable development of DSSCs.</p>

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Sulfated sucrose-derived B–N–F co-doped hierarchical porous carbon for efficient dye-sensitized solar cells

  • 期刊论文

  • 发表日期：

    2025年8月12日

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  • Ti Liang,
  • Jingzhe Li,
  • Rui Tian,
  • Jinzhong Wang,
  • Yanan Li,
  • Guangzai Nong

摘要

Traditional dye-sensitized solar cells (DSSCs) rely on platinum pair electrodes (Pt-CE), but the scarcity, high cost, and insufficient electrochemical stability of platinum seriously restrict their large-scale application. In this study, B–N–F-doped hierarchical porous carbon (BNF-doped-APC) was successfully prepared as CE through a concentrated sulfuric acid-mediated pre-carbonization and thermochemical activation process using hydroxyl-rich biomass sucrose as the precursor, with the aim of achieving a sustainable alternative to Pt-CE. In the test, DSSCs with BNF-doped-APC-2 assembly demonstrated excellent reduction-catalytic activity (peak current density 1.7 mA/cm2) and good electron transport capacity (Rct = 12.32 Ω cm2), achieving a photoelectric conversion efficiency (PCE) of 9.1%. It was significantly superior to Pt-CE (8.3%). Furthermore, the natural abundance and process simplicity of sucrose provide new ideas for the sustainable development of DSSCs.