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Self-healable sticky porous elastomer for gas-solid interacted power generation.

Jiaqing Xiong¹, Gurunathan Thangavel¹, Jiangxin Wang¹

¹School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.

Science Advances

|August 25, 2020

Summary

A novel self-healing elastomer generates electricity from gas-solid interactions, offering a new avenue for self-powered wearable sensors and energy harvesting. This triboelectric nanogenerator (TENG) utilizes trapped air for efficient power generation.

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Area of Science:

Materials Science
Energy Harvesting
Triboelectric Nanogenerators

Background:

Triboelectric effect is a promising method for mechanical energy harvesting.
Developing self-healing and adhesive materials is crucial for advanced wearable electronics.
Gas-solid triboelectric interactions offer a unique approach to power generation.

Purpose of the Study:

To develop a novel gas-solid interacted power generation system using a self-healing elastomer.
To investigate the triboelectric properties and energy harvesting capabilities of the designed material.
To explore the potential applications of the developed device in wearable electronics and sensing.

Main Methods:

Synthesis of a supramolecular polysiloxane-dimethylglyoxime-based polyurethane (PDPU) porous elastomer.

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Characterization of the elastomer's self-healing, adhesive, and triboelectric properties.

Fabrication and testing of a gas-solid interacted triboelectric nanogenerator (GS-TENG) based on the PDPU material.

Main Results:

The PDPU elastomer is intrinsically triboelectric negative, exhibiting high static surface potential and compressibility.
The GS-TENG demonstrates efficient electricity generation from the interaction between trapped air and the elastomeric matrix under compression.
The self-healable and adhesive GS-TENG shows high stretchability (~1200%) and enables energy harvesting from various deformations.

Conclusions:

A novel self-healing, adhesive, and stretchable GS-TENG has been successfully developed.
The device efficiently harvests mechanical energy through gas-solid triboelectric interactions.
The GS-TENG shows significant potential for applications as freestanding wearable tactile skin for self-powered sensing.