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Laser‐Induced Graphene Composites for Printed, Stretchable, and Wearable Electronics
Author(s) -
Tehrani Farshad,
BeltránGastélum Mara,
Sheth Karan,
Karajic Aleksandar,
Yin Lu,
Kumar Rajan,
Soto Fernando,
Kim Jayoung,
Wang Joshua,
Barton Shemaiah,
Mueller Michelle,
Wang Joseph
Publication year - 2019
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201900162
Subject(s) - graphene , materials science , supercapacitor , capacitance , nanotechnology , inkwell , printed electronics , electronics , flexible electronics , energy storage , capacitive sensing , polystyrene sulfonate , composite material , pedot:pss , computer science , electrical engineering , electrode , power (physics) , chemistry , physics , engineering , quantum mechanics , layer (electronics) , operating system
Graphene‐based composites have received attention as part of the drive towards next‐generation electronic and energy‐storage technologies. However, current graphene synthesis methods are limited by complex, time‐consuming, toxic, costly, and/or often low‐yield procedures. The synthesis of a novel stretchable graphene‐polyurethane‐poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate ink aimed at printing wearable electronics is reported. The procedure is based on low‐cost high‐yield production of high‐performance graphene ink produced by laser induction of polyimide film followed by harvesting the graphene. Screen printing is used to fabricate flexible and intrinsically stretchable micro‐supercapacitors (S‐MSCs) printed on different substrates. The resulting graphene‐based printed S‐MSCs display a remarkably high capacitive performance and attractive mechanical resiliency. High specific areal capacitance, above 23 mF cm −2 , is achieved, which is the highest areal capacitance reported for highly stretchable, printed graphene supercapacitors. A repeated (200 cycles) stretchability beyond 100% is obtained while maintaining more than 85% of the S‐MSCs' original capacitance. This unique and highly scalable graphene ink synthesis method holds considerable promise for application in low‐cost graphene‐based chemical formulation, especially in the field of printed and wearable electronics toward multifunctional, energy‐storage systems capable of withstanding severe mechanical deformation while maintaining their optimal electrochemical performance.