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

Yunhao Hu, Weifeng Yang, Yuji Ma, Yong Qiu, Wei Wei, Bo Wu, Kerui Li, Yaogang Li, Qinghong Zhang, Ru Xiao, Chengyi Hou () and Hongzhi Wang ()
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Yunhao Hu: Donghua University
Weifeng Yang: Donghua University
Yuji Ma: Donghua University
Yong Qiu: Binjiang Institute of Zhejiang University
Wei Wei: Donghua University
Bo Wu: Donghua University
Kerui Li: Donghua University
Yaogang Li: Donghua University
Qinghong Zhang: Donghua University
Ru Xiao: Donghua University
Chengyi Hou: Donghua University
Hongzhi Wang: Donghua University

Nature Communications, 2025, vol. 16, issue 1, 1-8

Abstract: Abstract 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.

Date: 2025
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DOI: 10.1038/s41467-025-57082-4

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