Wearable and self-cleaning hybrid energy harvesting system based on micro/nanostructured haze film. (January 2020)

• Record Type: Journal Article
• Authors: Ren, Zhongyang; Zheng, Qiao; Wang, Haobin; Guo, Hang; Miao, Liming; Wan, Ji; Xu, Chen; Cheng, Shuying; Zhang, Haixia
• Is Part Of: Nano energy. Volume 67(2020)
• Publication Date: 2020-01
• Subjects: Wearable -- Hybrid nanogenerator -- Triboelectric -- Organic solar cells -- Self-cleaning; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2019.104243
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: With wearable electronic devices arising, a flexible hybrid energy harvester that is capable to continuously harvest multi-types of energy and seamlessly integrate with human body draws great attentions. In this paper, we introduce a novel self-cleaning flexible hybrid energy harvesting system which includes a groove-shape micro/nanostructured haze thin film (GHF), a flexible power management circuit, and a hybrid energy harvester is integrated by a flexible organic solar cells (F-OSC) with an autonomous single-electrode triboelectric nanogenerator (AS-TENG) via one common-electrode. This system allows for simutaneously harvesting both solar and mechanical energy through two separate parts (i.e. the top F-OSC and the bottom AS-TENG). The flexible power management circuit simultaneously utilizes the large current of the solar cell and the high voltage of the TENG. In addition, GHF with excellent optical properties, large surface area and super-hydrophobicity has been introduced into the hybrid cell, which serves not only as a triboelectric layer to increase the surface charge density of the AS-TENG, but also as a light-trapping layer to improve the photoelectric conversion efficiency (PCE) of the F-OSC. Meanwhile, GHF helps this device to achieve unique functions, such as dust-proof, self-cleaning and self-encapsulating, which significantly improve the stability and repeatability of hybrid power unit in practical applications. Graphical abstract: We presents a wearable and self-cleaning hybrid energy harvesting system based on a groove-shape micro/nanostructured haze film (GHF). This system includes a flexible power management circuit, and a hybrid energy harvester is integrated by a flexible organic solar cells (F-OSC) with an autonomous single-electrode triboelectric nanogenerator (AS-TENG) via a common electrode. Besides the function of collecting solar energy from the top and mechanical energy of human movement from the bottom simultaneously, it achieve unique properties such as dust-proof, self-cleaning and self-encapsulating. Image 1 Highlights: The system exploits GHF to achieve excellent optical properties, large surface area and super-hydrophobic performance. The hybrid system enables simultaneously collecting solar energy from the top and mechanical energy from the bottom. FPCB technique was used to improve the integration of the system and synergizes advantages of OSC and TENG effectivly. By introducing the GHF, we encapsulate this flexible hybrid cells to realize characters of dust-proof and self-cleaning.