Logo image
Back
High-resolution extrusion printing of Ti3C2-based inks for wearable human motion monitoring and electromagnetic interference shielding
Journal article   Peer reviewed

High-resolution extrusion printing of Ti3C2-based inks for wearable human motion monitoring and electromagnetic interference shielding

Ahmadreza Ghaffarkhah, Milad Kamkar, Zahra Azimi Dijvejin, Hossein Riazi, Saeed Ghaderi, Kevin Golovin, Masoud Soroush and Mohammad Arjmand
Carbon (New York), v 191, pp 277-289
May 2022
DOI: https://doi.org/10.1016/j.carbon.2022.02.003

Abstract

Conductive ink EMI shielding Extrusion printing MXene Wearable electronics
This work addresses two major challenges of MXene-based printing; that is, its low printing resolution (i.e., filament spreading >120%) and its inability to create structures with simultaneously high electrical conductivity and mechanical flexibility. We first report high-resolution extrusion printing of Ti3C2 and composite of Ti3C2/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). The printing has a negligible filament spreading (<25%) and low thickness and width variations (<20%) compared to their average values. We then fabricate Ti3C2/PEDOT:PSS composite structures that possess simultaneously exceptional electrical conductivity and flexibility (conductivity of 1600 ± 400 S/cm for 80 wt% Ti3C2, which can withstand up to 3000 bending cycles). Addressing the two challenges expands the applications of MXene-based printing. For instance, micrometer-thick grids printed with our method show excellent EMI shielding effectiveness and superior specific EMI shielding effectiveness, reaching 38.4 dB and 43,000 dB cm2 g−1 in the case of pure Ti3C2 and 28.1 dB and 32,000 dB cm2 g−1 for the composite containing 80 wt% Ti3C2. The printed structures of pure Ti3C2 also perform as highly-sensitive strain sensors with a gauge factor of 11,300 at a strain of 4%. The prepared sensors are capable of monitoring various human activities, including breathing, facial muscles movements, and talking. [Display omitted] •Aqueous and additive-free inks of pure Ti3C2 and composites Ti3C2/PEDOT:PSS were developed.•High-resolution extrusion printing of Ti3C2-based inks was demonstrated.•Printed structures of Ti3C2 showed simultaneously high conductivity and mechanical flexibility.•Printed grids of Ti3C2-based inks showed unique EMI shielding characteristics.•Printed structures of pure Ti3C2 were performed as highly-sensitive strain sensors.

Metrics

17 Record Views
76 citations in Web of Science
71 citations in Scopus

Details

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Physical
Materials Science, Multidisciplinary
Logo image