Tiny bubble triboelectric nanogenerator functionalized by liquid film rupture

被引:1
作者
Dong, Kejian [1 ,3 ]
Chen, Jingtan [2 ]
Xia, Xin [3 ]
Deng, Wei [1 ]
Khan, Shahid Ali [1 ]
Zhang, Xuan [4 ]
Zi, Yunlong [3 ,5 ]
Zhao, Jiyun [1 ]
机构
[1] City Univ Hong Kong, Dept Mech Engn, Kowloon Tong, Tat Chee Ave, Hong Kong, Peoples R China
[2] Xidian Univ, Guangzhou Inst Technol, Guangzhou, Peoples R China
[3] Hong Kong Univ Sci & Technol Guangzhou, Thrust Sustainable Energy & Environm, Guangzhou 511400, Guangdong, Peoples R China
[4] Beijing Inst Technol, Sch Mech Engn, Dept Energy & Power Engn, Beijing 100081, Peoples R China
[5] HKUST Shenzhen Hong Kong Collaborat Innovat Res In, Shenzhen 518048, Guangdong, Peoples R China
关键词
Triboelectric nanogenerator; Bubble; Adaptive regulator; Energy harvesting; Gas leakage detection; ENERGY;
D O I
10.1016/j.nanoen.2024.110256
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
As an important energy carrier, bubble commonly exists in undersea and liquid-gas two-phase systems. Efficiently utilizing the bubble energy is critical for potential applications in energy harvesting and sensing in two-phase environment. However, the micro liquid layer inhibits the complete contact and restricts the performance. Herein, we proposed strategies for tiny bubble triboelectric nanogenerator (TB-TENG) featuring liquid film rupture to eliminate the screen between bubble and dielectric layer. We carried out optimization design by invasively rupturing the liquid film, achieving stable open-circuit voltage peak and transferred charge of 8.3 V and 3 nC by a 110-mu L bubble, with a high peak power density yielding the existing tube-based studies. Additionally, for noninvasive and spontaneous liquid film rupture, a scalable bubble regulator was fabricated, which integrated the irregularly dispersed bubbly flow into slug flow. We demonstrated the self-powered undersea gas leakage detection system combining the TB-TENG with the bubble regulator. Assisted with the good bubble regulation adaptability, the total leakage gas volume and rate were measured based on the voltage signal, with a varied leakage rate of 0.72-6 mL/min. The strategy provides insights for the related research in liquid-gas two-phase systems in nature and industry.
引用
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页数:10
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