Repozytorium publikacji - Politechnika Gdańska

Carbon (sp3)-on-carbon (sp2) materials have the potential to revolutionize fields such as energy storage and microelectronics. However, the rational engineering and printing of carbon-on-carbon materials on flexible substrates remains a challenge in wearable electronics technology. This study demon-strates the scalable fabrication of flexible laser-induced graphene (LIG)-boron doped diamond nanowall (BDNW) hybrid nanostructures for microsuperca-pacitors. Direct laser writing on polyimide film is tuned by the presence of BDNW powder where an appreciable absorbance of the BDNWs at the CO2laser wavelength enhances the local film temperature. The thermal shock due to laser irradiation produces graphitized and amorphous carbon at the diamond grain boundaries which increases the thermal and charge transfer capacity between the LIG–diamond interfaces. The samples are further treated with O2 plasma to tune the wettability or to improve the microsu-percapacitor device performance. The outstanding electrical characteristics of graphene, exceptional electrochemical stability of diamond, and essential contributions of oxygen-containing groups result in a remarkable charge storage capacity (18 mF cm−2 @ 10 mV s−1) and cyclic stability (98% retention after 10 000 cycles) outperforming most state-of-the-art LIG-based superca-pacitors. Furthermore, despite extreme mechanical stress, these microsu-percapacitors maintain their outstanding electrochemical properties, thus holding promise for high-power, flexible/wearable electronics.

Autorzy

• dr Sujit Deshmukh link otwiera się w nowej karcie ,
• dr inż. Paweł Jakóbczyk link otwiera się w nowej karcie ,
• dr inż. Mateusz Ficek link otwiera się w nowej karcie ,
• dr hab. inż. Jacek Ryl link otwiera się w nowej karcie ,
• Dongsheng Geng,
• dr hab. inż. Robert Bogdanowicz link otwiera się w nowej karcie