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An easily-manipulated protocol for patterning of MXene on paper for planar micro-supercapacitors

Abstract

Recently, a unique class of bidimensional layered transition-metal carbides/nitrides, namely MXene, has shown great potential to be used in high-performance on-chip microsupercapacitors (MSCs). Patterning of MXene on film substrate to form coplanar interdigital electrodes is the key to realize fabrication of high-performance MXene-based planar MSCs. Herein, through a combination of ordinary laser printing, vacuum-assisted deposition and physical sputtering, a simple protocol for fast and on-demand patterning of few-layered MXene flakes on paper into a coplanar arrangement to fabricate planar symmetrical MSCs is reported. Benefiting from the as-obtained binder/conductive-additives free MXene-based interdigital electrodes with unique layered porous structure and high electrical conductivity attributed to the good alignment along the c-axis of the close restacking few-layered MXene flakes, the as-fabricated all-solid-state planar MXene-based symmetrical MSCs can acquire a maximal areal capacitance of 27.29 mF cm-2 as the thickness of the MXene electroactive layer increases, achieving at least 460% enhancement compared to the value of advanced carbon-based planar symmetrical MSCs (0.1-6 mF cm-2), without obvious deterioration of the volumetric capacitance. Our work provides a simple and convenient platform to fabricate MXene-based on-chip symmetrical MSCs with thick coplanar interdigital electrodes to increase the capacity per device within a limited footprint.

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Publication details

The article was received on 31 May 2017, accepted on 12 Jul 2017 and first published on 13 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA04735E
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    An easily-manipulated protocol for patterning of MXene on paper for planar micro-supercapacitors

    H. Hu and H. Tao, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA04735E

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