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<p>Solid-liquid contact electrification is a widespread interface phenomenon in nature. Recent research and theory demonstrate that electron transfer during this process holds the potential to initiate interfacial chemical reactions. Here, we design a dual-functional device for generation of H<sub>2</sub>O<sub>2</sub> and energy. Interfacial chemical reactions and solid-liquid contact charging occur simultaneously during the liquid phase flow process. Specifically, electron transfer at the solid-liquid interface induces the formation of hydroxyl radicals (·OH) in the liquid phase, leading to spontaneous generation of H<sub>2</sub>O<sub>2</sub>. The transfer of charges at the solid-liquid interface is accompanied by energy transfer. By designing an external electrode structure, we can effectively harvest the energy from the flowing liquid phase, yielding an output power of up to 5.8 kW/m<sup>3</sup> for water.</p>

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Solid-liquid interface charge transfer for generation of H2O2 and energy

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月16日

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  • Yunhao Hu,
  • Weifeng Yang,
  • Yuji Ma,
  • Yong Qiu,
  • Wei Wei,
  • Bo Wu,
  • Kerui Li,
  • Yaogang Li,
  • Qinghong Zhang,
  • Ru Xiao,
  • Chengyi Hou,
  • Hongzhi Wang

摘要

Solid-liquid contact electrification is a widespread interface phenomenon in nature. Recent research and theory demonstrate that electron transfer during this process holds the potential to initiate interfacial chemical reactions. Here, we design a dual-functional device for generation of H2O2 and energy. Interfacial chemical reactions and solid-liquid contact charging occur simultaneously during the liquid phase flow process. Specifically, electron transfer at the solid-liquid interface induces the formation of hydroxyl radicals (·OH) in the liquid phase, leading to spontaneous generation of H2O2. The transfer of charges at the solid-liquid interface is accompanied by energy transfer. By designing an external electrode structure, we can effectively harvest the energy from the flowing liquid phase, yielding an output power of up to 5.8 kW/m3 for water.