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<p>Facing the dual pressure of arbitrary biomass release and renewable energy demand, numerous forms of renewable biomass have been employed to prepare value-added biomaterials applied in energy conversion and storage fields. In this study, three biomaterials of biomass-derived natural dye (BND), carbon material (BCM), and piezoelectric membrane (BPM) were prepared concurrently from taro leaf to assemble three devices for the first time, including a dye-sensitized solar cells (DSSCs), sodium ion batteries (SIBs), and piezoelectric nanogenerators (PENGs). In brief, BND and the BCM were respectively selected as photosensitizer and counter electrode for the DSSCs with mono-biomass and di-biomass modes, and the BPM was employed as the sensing material for the PENGs, with the BCM also used as the anode material for the SIBs. Owing to the acceptable bandgap of the chlorophyll-containing BND and the unique morphological and structural characteristics of the amorphous carbon-composed BCM, photoelectric conversion efficiencies from 0.17% to 1.63% were obtained for the DSSCs with various modes. Meanwhile, the same BCM used in the SIBs showed initial discharge and charge capacity of 448.6 and 100.4&#xa0;mAh&#xa0;g<sup>−1</sup>, with an initial coulomb efficiency of 22.38%. Furthermore, the cellulose-containing BPM with a developed porous structure was introduced into the PENG, enabling various mechanical energy to be efficiently captured. Therefore, an integrated application scenario is proposed, referred to as a renewable “solar-mechanical-storage” integrated system, where the biomass-based DSSCs and PENGs act as converters of renewable solar and mechanical energy, and the SIB as the storage system for the produced renewable energy.</p> Graphical Abstract <p></p>

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Multi-role Utilization of Valuable Taro Leaf-Derived Biomaterials in an Integrated Solar-Mechanical-Storage Scenario

  • 期刊论文

  • 发表日期：

    2025年6月3日

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  • Shunjian Xu,
  • Ping Huang,
  • Lina Zhang,
  • Yongping Luo,
  • Yongya Wang,
  • Yike Liu,
  • Kai Fu,
  • Haiyan Fu,
  • Yiru Huang

摘要

Facing the dual pressure of arbitrary biomass release and renewable energy demand, numerous forms of renewable biomass have been employed to prepare value-added biomaterials applied in energy conversion and storage fields. In this study, three biomaterials of biomass-derived natural dye (BND), carbon material (BCM), and piezoelectric membrane (BPM) were prepared concurrently from taro leaf to assemble three devices for the first time, including a dye-sensitized solar cells (DSSCs), sodium ion batteries (SIBs), and piezoelectric nanogenerators (PENGs). In brief, BND and the BCM were respectively selected as photosensitizer and counter electrode for the DSSCs with mono-biomass and di-biomass modes, and the BPM was employed as the sensing material for the PENGs, with the BCM also used as the anode material for the SIBs. Owing to the acceptable bandgap of the chlorophyll-containing BND and the unique morphological and structural characteristics of the amorphous carbon-composed BCM, photoelectric conversion efficiencies from 0.17% to 1.63% were obtained for the DSSCs with various modes. Meanwhile, the same BCM used in the SIBs showed initial discharge and charge capacity of 448.6 and 100.4 mAh g−1, with an initial coulomb efficiency of 22.38%. Furthermore, the cellulose-containing BPM with a developed porous structure was introduced into the PENG, enabling various mechanical energy to be efficiently captured. Therefore, an integrated application scenario is proposed, referred to as a renewable “solar-mechanical-storage” integrated system, where the biomass-based DSSCs and PENGs act as converters of renewable solar and mechanical energy, and the SIB as the storage system for the produced renewable energy.

Graphical Abstract