Fig. 5From: Structural and Chemical Modifications Towards High-Performance of Triboelectric NanogeneratorsTENGs based on regenerative natural substances: a lipid layers on natural regenerative surfaces. (Reproduced with permission from Ref. [44]); b a preparation of the biodegradable plant leaf and leaf powder-based TENGs. (Reproduced with permission from Ref. [45]); c TENG based on Chinese red rose. (Reproduced with permission from Ref. [46])Back to article page