articleAdvanced MaterialsNov 29, 2019Closed access

Probing Contact‐Electrification‐Induced Electron and Ion Transfers at a Liquid–Solid Interface

Chinese Academy of Sciences · Beijing Institute of Nanoenergy and Nanosystems · +2 more institutions

PubMed
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Abstract

Abstract As a well‐known phenomenon, contact electrification (CE) has been studied for decades. Although recent studies have proven that CE between two solids is primarily due to electron transfer, the mechanism for CE between liquid and solid remains controversial. The CE process between different liquids and polytetrafluoroethylene (PTFE) film is systematically studied to clarify the electrification mechanism of the solid–liquid interface. The CE between deionized water and PTFE can produce a surface charges density in the scale of 1 nC cm −2 , which is ten times higher than the calculation based on the pure ion‐transfer model. Hence, electron transfer is likely the dominating effect for this liquid–solid…

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