A Siloxene/Ecoflex Nanocomposite-Based Triboelectric Nanogenerator with Enhanced Charge Retention by MoS2/LIG for Self-Powered Touchless Sensor Applications

This paper proposes a high-performance contactless TENG based on a Siloxene/Ecoflex nanocomposite, which induces abundant surface charges due to its strong electron affinity. To address the challenge of charge retention, a MoS₂ incorporated laser-induced graphene (LIG) is introduced as a charge trapping interlayer, which increases the surface potential four-fold and enhances the TENG's output performance.

• A new high-performance contactless TENG using a Siloxene/Ecoflex nanocomposite.
• Introduction of a MoS₂/LIG charge trapping interlayer, enhancing surface potential by four-fold.
• Excellent humidity sensing characteristics and prevention of wear and tear.
• Demonstration of self-powered touchless applications, including a hand sanitizer and a wireless gaming controller.

A contactless TENG was fabricated using a Siloxene/Ecoflex nanocomposite and a MoS₂/LIG charge trapping interlayer. The device's performance was evaluated by surface potential measurements. Its applicability was demonstrated in self-powered touchless hand sanitizer systems and as a wireless controller for a gaming interface.

The MoS₂/LIG interlayer enhanced the surface potential four-fold, boosting the TENG's output performance. The device exhibited excellent humidity sensing with a sensitivity of 0.45 V/%. It was successfully used in touchless applications, highlighting its promise for reducing contact situations, especially relevant during pandemics.