ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces
5 years ago

Combustion-Assisted Photonic Annealing of Printable Graphene Inks via Exothermic Binders

Combustion-Assisted Photonic Annealing of Printable Graphene Inks via Exothermic Binders
Karl W. Putz, Mark C. Hersam, Manuel H. Dos Santos, Ethan B. Secor, Theodore Z. Gao, Shay G. Wallace
High-throughput and low-temperature processing of high-performance nanomaterial inks is an important technical challenge for large-area, flexible printed electronics. In this report, we demonstrate nitrocellulose as an exothermic binder for photonic annealing of conductive graphene inks, leveraging the rapid decomposition kinetics and built-in energy of nitrocellulose to enable versatile process integration. This strategy results in superlative electrical properties that are comparable to extended thermal annealing at 350 °C, using a pulsed light process that is compatible with thermally sensitive substrates. The resulting porous microstructure and broad liquid-phase patterning compatibility are exploited for printed graphene microsupercapacitors on paper-based substrates.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b07189

DOI: 10.1021/acsami.7b07189

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