Engineering self-healable and biodegradable ionic polyurethane with highly tribopositive behavior
Publication Name
Nano Energy
Abstract
According to the development of human-oriented technology, triboelectric nanogenerators (TENGs) present great potential as a power source for self-powered sensors and wearable devices. Advanced next-generation TENGs require not only durability and stable production of electrical energy but also the ability to autonomously self-heal after mechanical damage and biodegradability. Here we report a self-healable, biodegradable, and high performance TENG using engineered ionic polyurethane (IPU). We utilized polycaprolactone-based PU to provide biodegradable properties and introduced imidazolium ionic liquids diol (IL) to facilitate self-healing through ion-dipole interaction. Imidazolium ionic liquid diol also improves triboelectric properties and improves capacitance by forming an electric double layer (EDL), contributing to improved output. These results suggest a high-performance TENG design methodology that can be applied to next-generation soft electronic devices.
Open Access Status
This publication is not available as open access
Volume
126
Article Number
109706
Funding Number
2020R1C1C1007436
Funding Sponsor
National Research Foundation of Korea