The structural parameters of the T-TENG can be fine-tuned based on specific requirements, including materials, gap dimensions, layer thickness, and more. This section will first showcase how the incorporation of the 2D material (MoS2) positively impacts performance and subsequently investigate other influential factors affecting the performance of T-TENG. Six devices are developed with the following configuration: Fabric/Graphene/Insulator-coating (Tribo-material 1)/Spacer (sponge)/ Fabric/Graphene/PVA-MoS2 composite gel/ Kapton tape (Tribo-material 2) (Figure ). These devices are designed to investigate the impact of polyvinyl alcohol-MoS2 (PVA+MoS2) gel with varying concentrations of MoS2 (2g/L, 1g/L, 0.5g/L and 0.1g/L in water), as well as one device with only PVA gel and one without any gel.