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您的检索式：作者名="Daomin Min"
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| 1 | Dielectric Manipulated Charge Dynamics in Contact Electrification显示文摘Surface charge density has been demostrated to be sigiantly impacted by the detric properties of tibomaterals.However,the ambiguous physical mechanism of dielectric manipulated charge behavior still restricts the construction of high performance tribomaterials.Here,using the atomic force microscopy and Kelvin probe force microscopy,an in situ method was conducted to investigate the contact letrification and charge dynamics on a typical tribomaterial(ie,BaTiOj/PVDF-TrFE nanocomposite)at nanoscale.Combined with the characterization of triboelectric device at macroscale,it is found that the number of transferred electrons increases with contact force/area and tends to reach saturation under increased friction cycles.The incorporated high permittivity BaTiO,nanoparticles enhance the capacitance and electron trapping capability of the nanocomposites,eficiently inhibiting the lateral difusion of electrons and improving the output performance of the triboelectric devices.Exponential decay of the surface potential is observed over monitoring time for all dielectric samples.At high BaTiO,loadings,more electrons can drift into the bulk and combine with the induced charges on the back electrode,forming a large leakage current and accordingly accelerating the electron dissipation.Hence,the charge trapping/storing and dissipating,as well as the charge attracting properties,should be comprehensively considered in the design of high-performance tribomateras. | Kunming Shi Bin Chai Haiyang Zou Daomin Min Shengtao Li Pingkai Jiang Xingyi Huang | 2022 | Research2022，，2： | 0 |
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