The scope of this project aims to design a high-performance TENG using long-term stable anionic materials, where the charge density and stability of the triboelectric materials are paramount. Polydimethylsiloxane (PDMS) is recognized as a good negative friction layer for triboelectric systems.1 However, its viscoelastic behavior results in a time delay in voltage contact and separation, leading to a comparatively lower output voltage than its theoretical potential.2 To enhance the output of PDMS-based TENGs, the structure of the PDMS layer has been modified with nanoadditives.3,4 Graphene oxide (GO), with its abundant oxygen-containing functional groups, serves as an additive to improve output voltage. 5 Thus, the GO/PDMS composite emerges as a promising negative triboelectric material due to its high flexibility, highly negative charge, and structural resilience.

GO is synthesized by using graphite, leading to reduce waste and prevent the release of waste materials into the environment.

Membrane-based TENG is designed to harness energy from artificial sources such as walking, running, tapping, and similar motions.

• Fabrication of anionic material:
PDMS is a silicone-based elastomer that is composed of repeating units of [SiO(CH3)2] monomers linked by the siloxane (Si-O-Si) group. Graphene oxide (GO) is rich in negative charges because it has oxygen functional groups decorated on both the carbon network basal planes and edges. Thus, it can serve as a negative triboelectric material and offer diverse modifications through its functional groups.
• Design of membrane-based TENGs:
After synthesizing low-cost, high-stretchable, and translucent GO/PDMS composites, the high-performance membrane-based TENG device is designed.
• Future perspective:
The scope and depth of research need to be further expanded in the case of developing conductivenfiber for wearable TENG devices.