Printable graphene inks with polypropylene carbonate can advance printed electronics
Researchers from Guangdong Technion − Israel Institute of Technology have developed printable graphene inks with low-surface-tension solvents and mild-temperature post-processing using polypropylene carbonate (PPC).
a, b Illustrations of liquid-phase exfoliation (LPE) of graphene from graphite using PPC as a dispersant aid. c Photograph of graphene/PPC isolated as a powder from the liquid medium after LPE. d Photograph of a graphene ink formulated by redispersing the graphene/PPC powder. e Photograph of graphene micro-supercapacitor (MSC) electrodes deposited on paper with the graphene ink by aerosol jet printing. Image from: Communications Materials
In this work, graphene is produced by liquid-phase exfoliation with PPC, and the exfoliated graphene/PPC is used to generate printable inks. As a dispersant aid, PPC improves graphene exfoliation, dispersion stability, and redispersability in solvents with low surface tensions (<30 mJ m–2), facilitating the formulation of desirable inks for efficient aerosol jet printing on diverse substrates.
Source: https://www.graphene-info.com/printable-graphene-inks-polypropylene-carbonate-can-advance-printed-electronics
