Sustainable and shape-adaptable liquid single-electrode triboelectric nanogenerator for biomechanical energy harvesting

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Article number105027
Number of pages8
Journal / PublicationNano Energy
Online published4 Jun 2020
Publication statusPublished - Sep 2020


With the rapidly increasing health and environmental awareness, demands for wearable electronics are no longer limited to performance and design, but also safety, health and environment protection. Herein, a sustainable and shape-adaptable skin-like liquid single-electrode TENG (LS-TENG) is developed using aloe vera gel (AVG)@NaCl as the liquid electrode. As an effective network channel for charge transfer, the liquid electrode shows high conductivity and mobility, leading to a high current density that is 2.1–23 folds of reported LS-TENGs. Besides, the size effect of liquid electrode in LS-TENG is firstly investigated, upon which the output parameters are optimized. Consequently, AVG@1wt%NaCl-based LS-TENG shows the highest output reported for LS-TENG with VOC of 157.8 V, JSC of 44.2 mA/m2 and power density of 4.61 W/m2. Moreover, the device shows a high sensitivity to minute face expressions and is suitable for 2D or 3D-shape fabrication, indicating a great potential for use in wearable electronics, such as e-skin and health monitoring.

Research Area(s)

  • Aloe vera gel, Biomechanical energy harvesting, Liquid electrode, Size effect