Liquid-liquid triboelectric nanogenerator based on the immiscible interface of an aqueous two-phase system

Ye Lu, Longlong Jiang, Yang Yu, Dehua Wang, Wentao Sun, Yang Liu, Jing Yu, Jun Zhang, Kai Wang, Han Hu, Xiao Wang, Qingming Ma () and Xiaoxiong Wang ()
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Ye Lu: Qingdao University
Longlong Jiang: Qingdao University
Yang Yu: Qingdao University
Dehua Wang: Qingdao University
Wentao Sun: University of Health and Rehabilitation Sciences
Yang Liu: China Academy of Engineering Physics
Jing Yu: Shandong Normal University
Jun Zhang: Qingdao University
Kai Wang: Qingdao University
Han Hu: China University of Petroleum (East China)
Xiao Wang: Qingdao University
Qingming Ma: Qingdao University
Xiaoxiong Wang: Qingdao University

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract Solid nanogenerators often have limited charge transfer due to their low contact area. Liquid–liquid nanogenerators can transfer a charge better than the solid–solid and solid–liquid counterparts. However, the precise manipulation of the liquid morphology remains a challenge because of the fluidity limits of the liquid. In this work, using the surface tension of a droplet to fix its shape, a liquid-liquid triboelectric nanogenerator in Contact-Separation mode is designed using an immiscible aqueous-aqueous interface, achieving a contact surface charge transfer of 129 nC for a single droplet. The configuration is proven to be applicable in humid environments, and the two-phase materials have good biocompatibility and can be used as an effective drug carrier. Therefore, this nanogenerator is useful for designing future implantable devices. Meanwhile, this design also establishes the foundation of aqueous electronics, and additional applications can be achieved using this route.

Date: 2022
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DOI: 10.1038/s41467-022-33086-2

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