Improving and Quantifying Surface Charge Density via Charge Injection Enabled by Air Breakdown

Huiyuan Wu; Shaoke Fu; Wencong HeChuncai ShanJian WangYan DuShihe DuBangxing LiChenguo Hu

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Improving and Quantifying Surface Charge Density via Charge Injection Enabled by Air Breakdown

机译：Improving and Quantifying Surface Charge Density via Charge Injection Enabled by Air Breakdown

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The modification of triboelectric materials is an important means to improvethe output performance of triboelectric nanogenerator (TENG), and thesurface charge or ion implantation is an effective way among many modificationmethods. However, the output enhancement via optimizing triboelectricmaterials is still limited. Herein, a fast surface charge injection techniquebased on air breakdown effect is reported, which utilizes an excitation circuitto realize the directional accumulation of charge. Consequently, the outputcharge density of the Polyimide (PI) film after charge injection reaches880 μC m~(-2), which is the highest of the series of modified triboelectric materials.Moreover, a novel charge transfer mechanism with electrostatic inductioncompetition is proposed, in which significant difference between surfacecharge density and output charge density is highlighted clearly. Meanwhile,the method of quantifying surface charge density is further given. This workprovides a more effective method for the modification of dielectric materialsand also offers an important insight towards the charge transfer mechanismin TENG.

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来源
《Advanced functional materials》 |2022年第35期|2203884.1-2203884.8|共8页
作者
Huiyuan Wu; Shaoke Fu; Wencong HeChuncai ShanJian WangYan DuShihe DuBangxing LiChenguo Hu;
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作者单位

Department of Applied PhysicsState Key Laboratory of Power Transmission Equipment & SystemSecurity and New TechnologyChongqing UniversityChongqing 400044, P. R. China;

College of ScienceChongqing University of TechnologyChongqing 400054, P. R. China;

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正文语种英语
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air breakdown; charge injections; output charge density; surface charge density; triboelectric nanogenerators;

Improving and Quantifying Surface Charge Density via Charge Injection Enabled by Air Breakdown

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