Biodegradable, conductive, moisture-proof, and dielectric enhanced cellulose-based triboelectric nanogenerator for self-powered human-machine interface sensing. (March 2023)

• Record Type: Journal Article
• Authors: Wang, Zixun; Chen, Chen; Fang, Lin; Cao, Bao; Tu, Xinbo; Zhang, Renyun; Dong, Kai; Lai, Ying-Chih; Wang, Peihong
• Is Part Of: Nano energy. Volume 107(2023)
• Publication Date: 2023-03
• Subjects: Cellulose aerogel -- Triboelectric nanogenerators -- Moisture-proof -- Biodegradable -- Self-powered sensing; 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.2022.108151
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: With the rapid development of sensors and triboelectric nanogenerators (TENGs), multifunctional self-powered sensors have received extensive attention. In this study, we prepare cellulose carbon nanotubes aerogel TENG (CCA-TENG) with high output, moisture-proof, simplified structure, and biodegradability for ambient energy harvesting and self-powered sensing. The cellulose carbon nanotubes aerogel (CCA) can be used not only acts as a tribolayer, but also as an electrode, with the characteristics of a 3D porous structure, high specific surface area, and dielectric enhancement. CCA-TENG exhibits improved output performance due to the advantages of the enhanced dielectric constant and 3D porous structure. Since regenerated cellulose is a dense polymer, it still keeps high output performance under high humidity. More importantly, CCA-TENG can be rapidly degraded in cellulase, and the output performance of the CCA-TENG prepared from recycled CNTs reaches 91.04% output of the original TENG. This study demonstrates the preparation, degradation, and reuse of CCA-TENGs and their applications, providing new avenues for high-performance, moisture-proof, and ambient self-powered systems. Graphical Abstract: ga1 Highlights: A biodegradable and moisture-proof TENG based on cellulose-CNT aerogel (CCA) is systematically reported. Conductive CCA work not only as a tribolayer but also as an electrode. Without complicated treatments, the CCA-TENG can output stably under 15%-99% relative humidity. A high power density of 1237 mW·m -2 was achieved for the dielectric enhanced CCA-TENG. The Voc of the new CCA-TENG prepared from recycled CNTs reaches 91.04% Voc of the original TENG.