Breaking the Performance-Durability Trade-off in Triboelectric Nanogenerators with a WS2/PVC Composite for
Kun Zhao1,2, Chaohui Zhang1, Yaping Liu1
1State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, Gansu 730050, P. R. China.
ACS Applied Materials & Interfaces
|April 18, 2026
Summary
A new tungsten disulfide (WS2)/polyvinyl chloride (PVC) composite film enhances triboelectric nanogenerator (TENG) performance and durability. This WS2/PVC material improves surface charge density and wear resistance for long-lasting TENG devices.
Area of Science:
- Materials Science
- Nanotechnology
- Energy Harvesting
Background:
- Triboelectric nanogenerators (TENGs) are limited by mechanical wear, impacting output performance and operational lifetime.
- Developing durable and high-performance materials is crucial for advancing TENG technology.
Purpose of the Study:
- To create a WS2/PVC composite film that enhances both triboelectric performance and durability.
- To investigate the effect of hybrid tungsten disulfide (WS2) nanosheets on polyvinyl chloride (PVC) matrix properties.
Main Methods:
- Incorporation of monolayer-multilayer hybrid tungsten disulfide (WS2) nanosheets into a polyvinyl chloride (PVC) matrix.
- Fabrication and testing of a rotating disk-type TENG (RS-TENG) using the optimized WS2/PVC composite film.
Main Results:
- The optimized 3 wt % WS2/PVC composite film showed a 106.7% increase in surface potential, a 22.2% reduction in friction coefficient, and a 46.8% longer wear life compared to pure PVC.
- The fabricated RS-TENG achieved a peak output of 124 V, 212 μA, and 109 nC, with a maximum power of 8.44 mW.
- The device demonstrated excellent stability over 36,000 cycles and successfully powered electronic devices.
Conclusions:
- The WS2/PVC composite film offers a promising strategy for developing high-performance and long-lifetime TENGs.
- Synergistically enhancing surface charge density and wear resistance is key to improving TENG materials.
- This material approach has potential applications in self-powered intelligent transportation systems.
Related Concept Videos
01:15Van de Graaff Generator
Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
01:18Capacitor With A Dielectric
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...