The present work reports the synthesis of a composite of TiO2 nanosheets (NS) with reduced graphene oxide (rGO) for supercapacitor applications. The formation of composite has been achieved via a simple one-pot hydrothermal method. The rGO/TiO2 NS composite was used to fabricate a flexible electrode which, in presence of 1 M H2SO4 as an electrolyte, has shown a high specific capacitance of 233.67 F/g at a current density of 1 A/g within a potential window of 0–1 V. This enhanced supercapacitance of the rGO/TiO2 NS electrode is attributed to the synergistic effects from TiO2 and rGO NS which help in to attain a low equivalent series resistance and enhanced ion diffusion. Furthermore, the fabricated composite electrode has displayed a long-term cyclic stability, retaining a specific capacitance of 98.2% even after 2000 charge–discharge cycles. The proposed rGO/TiO2 NS electrode has delivered high values of energy (32.454 Wh/kg) and power (716.779 W/kg) densities. Interestingly, it is possible to retrieve a sufficiently high energy density of 24.576 Wh/kg which could generate a power density value of as high as 2142.84 W/kg. The above results reveal that the herein proposed thin film composite of rGO/TiO2 NS can offer extraordinary performance as a supercapacitor electrode compared to its nanotubes or nanoparticles.
Journal of Materials Science: Materials in Electronics – Springer Journals
Published: Jun 5, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
All the latest content is available, no embargo periods.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud