A Stretchable Laminated GNRs/BNNSs Nanocomposites with High Electrical and Thermal Conductivity

Rapid developing of modern electronics has accelerated the demand for stretchable components with high thermal management capability, because increasing power density and miniaturization of the electronic devices generate more elevated heat. However, stretchable electronics with enhanced heat dissipation have been few reported. In this study, a stretchable laminated nanocomposite-based conductor with both robust electric conductivity and enhanced thermal management capability was fabricated. With optimized GNRs and BNNS contents, this conductor exhibits a thermal conductivity enhancement of 266 %, leading to a working temperature decreasing from 57.4 °C to 29.2 °C. Even under a 100 % strain, the fluctuation of the equilibrium operational temperature is within 10 %. Moreover, the conductor shows outstanding electric performance under 200 % strains with a R/R0 value of 1.46. Whether stretched and tested in a Mbius-belt shape, or under hard-environmental conditions such as in seawater, crude oil, and even integrated in a wireless charging circuit, a significant reliability of this conductor is recorded. Our results are hoped to provide a practical approach for fabricating stretchable electronic devices working in high temperature environments associated with extreme thermal stresses, and under extreme circumstance such as sea rescue operations and marine oil pollution remediation.