Additive-free MXene inks and direct printing of micro-supercapacitors

By Chao Zhang, L. McKeon, M. Kremer, Sang-Hoon Park, O. Ronan, A. Seral-Ascaso, Sebastian Barwich, C. Coileáin, Niall McEvoy, H. Nerl and 4 more. Nature Communications, 2019

848 citations recorded by the source corpus.

Direct printing of functional inks is critical for applications in diverse areas including electrochemical energy storage, smart electronics and healthcare. However, the available printable ink formulations are far from ideal. Either surfactants/additives are typically involved or the ink concentration is low, which add complexity to the manufacturing and compromises the printing resolution. Here, we demonstrate two types of two-dimensional titanium carbide (Ti3C2Tx) MXene inks, aqueous and organic in the absence of any additive or binary-solvent systems, for extrusion printing and inkjet printing, respectively. We show examples of all-MXene-printed structures, such as micro-supercapacitors, conductive tracks and ohmic resistors on untreated plastic and paper substrates, with high printing resolution and spatial uniformity. The volumetric capacitance and energy density of the all-MXene-printed micro-supercapacitors are orders of magnitude greater than existing inkjet/extrusion-printed active materials. The versatile direct-ink-printing technique highlights the promise of additive-free MXene inks for scalable fabrication of easy-to-integrate components of printable electronics. Printing functional inks is attractive for applications in electrochemical energy storage and smart electronics, among others. Here the authors report highly concentrated, additive-free, aqueous and organic MXene-based inks that can be used for high-resolution extrusion and inkjet printing.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/1ac11c93e2be853679b982528c1c1ebe0d64228b

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In Biomedical Engineering

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Citations in the corpus

The 2021 flexible and printed electronics roadmap (2021, positive): “To highlight a recent example, Zhang et al demonstrated the impact of inkjet printing and extrusion to fabricate all-MXeneprinted structures for micro-supercapacitors [59].”