Laser-induced porous graphene films from commercial polymers

Jian Lin, Zhiwei Peng, Yuanyue Liu, Francisco Ruiz-Zepeda, Ruquan Ye, Errol L. G. Samuel, Miguel Jose Yacaman, Boris I. Yakobson and James M. Tour ()
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Jian Lin: Rice University
Zhiwei Peng: Rice University
Yuanyue Liu: Rice University
Francisco Ruiz-Zepeda: University of Texas at San Antonio, One UTSA Circle
Ruquan Ye: Rice University
Errol L. G. Samuel: Rice University
Miguel Jose Yacaman: University of Texas at San Antonio, One UTSA Circle
Boris I. Yakobson: Rice University
James M. Tour: Rice University

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract The cost effective synthesis and patterning of carbon nanomaterials is a challenge in electronic and energy storage devices. Here we report a one-step, scalable approach for producing and patterning porous graphene films with three-dimensional networks from commercial polymer films using a CO2 infrared laser. The sp3-carbon atoms are photothermally converted to sp2-carbon atoms by pulsed laser irradiation. The resulting laser-induced graphene (LIG) exhibits high electrical conductivity. The LIG can be readily patterned to interdigitated electrodes for in-plane microsupercapacitors with specific capacitances of >4 mF cm−2 and power densities of ~9 mW cm−2. Theoretical calculations partially suggest that enhanced capacitance may result from LIG’s unusual ultra-polycrystalline lattice of pentagon-heptagon structures. Combined with the advantage of one-step processing of LIG in air from commercial polymer sheets, which would allow the employment of a roll-to-roll manufacturing process, this technique provides a rapid route to polymer-written electronic and energy storage devices.

Date: 2014
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DOI: 10.1038/ncomms6714

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