Inkjet‐Printing of Supercapacitors

Abstract

The fabrication of supercapacitors and coin cells by means of inkjet printing based on the utilization of a commercially available graphite-based ink is reported. The printing steps have been optimized utilizing a commercial office inkjet printer. Adjustments to the printing conditions as well as optimizing the device layout enabled the fabrication of usable supercapacitors and details of the assembly and processing steps have been investigated. Studies included a careful tuning of the ink properties to obtain homogeneous electrodes, to optimize layer thickness and, as a consequence, performance of the supercapacitor devices. Finally, the performance of the printing process was cross-checked by the fabrication of a coincell layout. Special emphasis was placed on the printing process to establish a simple and readily applicable fabrication of prototype device layouts.

Inkjet Printing Optimization: Toward Realization of High‐Resolution Printed Electronics

“…Reproduced under the terms of the CC‐BY license. [ 173 ] Copyright 2020, Wiley‐VCH GmbH; h) Cross‐sectional view of passivated graphene flakes (GMP) micro‐supercapacitor. Reproduced under the terms of the CC‐BY license.…”

“…fabricated a double‐layer film‐SCs by assembling graphene‐printed aluminum (Al) foil electrodes with lithium hexafluorophosphate (LiPF 6 ) as the electrolyte (Figure 14g). [ 173 ] The 25.6 µm thick graphene layer demonstrated high capacitance performance of 24–35 pF·cm −2 and long‐term stability over 800 cycles. Instead of relying on a single component, Diao et al.…”

“…Copyright 2019, Springer Nature; g) Schematic illustration of printed graphene-based supercapacitor. Reproduced under the terms of the CC-BY license [173]. Copyright 2020, Wiley-VCH GmbH; h) Cross-sectional view of passivated graphene flakes (GMP) micro-supercapacitor.…”

Flexible and High‐Performance MXene/MnO2 Film Electrodes Fabricated by Inkjet Printing: Toward a New Generation Supercapacitive Application

“…[13,14] However, people pay less attention to the energy storage devices of inkjet printing, especially, in the low-cost flexible substrate and large-area manufacturing. Therefore, the purpose of this work is to expand the low-cost inkjet printing technology to the field of large-area printing flexible energy memory devices.The inkjet printing technology provides a new development direction for the manufacture of supercapacitors, because the miniature, asymmetric, and flexible supercapacitors can be effectively realized by inkjet printing, [15,16] it will release the full potential of supercapacitors for future electronic products. Supercapacitor electrodes are usually made of materials with high capacitance, high conductivity, and high specific surface area, such as activated carbon, carbon nanotubes, and graphene.…”

“…The inkjet printing technology provides a new development direction for the manufacture of supercapacitors, because the miniature, asymmetric, and flexible supercapacitors can be effectively realized by inkjet printing, [15,16] it will release the full potential of supercapacitors for future electronic products. Supercapacitor electrodes are usually made of materials with high capacitance, high conductivity, and high specific surface area, such as activated carbon, carbon nanotubes, and graphene.…”