Three-Dimensional Ti3C2Tx MXene-Prussian Blue Hybrid Microsupercapacitors by Water Lift-Off Lithography

Yongjiu Lei, Wenli Zhao, Yunpei Zhu, Ulrich Buttner, Xiaochen Dong, Husam N. Alshareef*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The construction of electrochemical energy-storage devices by scalable thin-film microfabrication methods with high energy and power density is urgently needed for many emerging applications. Herein, we demonstrate an in-plane hybrid microsupercapacitor with a high areal energy density by employing a battery-type CuFe-Prussian blue analogue (CuFe-PBA) as the positive electrode and pseudocapacitive titanium carbide MXene (Ti3C2Tx) as the negative electrode. A three-dimensional lignin-derived laser-induced graphene electrode was prepared as the substrate by laser exposure combined with an environmentally friendly water lift-off lithography. The designed hybrid device achieved enhanced electrochemical performance thanks to the ideal match of the two types of high-rate performance materials in proton-based electrolytes and the numerous electrochemically active sites. In particular, the device delivers a high areal capacitance of 198 mF cm-2, a wide potential window (1.6 V), an ultrahigh rate performance (75.8 mF cm-2 retained even at a practical/high current density of 100 mA cm-2), and a competitive energy density of 70.5 and 27.6 μWh cm-2 at the power densities 0.74 and 52 mW cm-2, respectively. These results show that the Ti3C2Tx/CuFe-PBA hybrid microsupercapacitors are promising energy storage devices in miniaturized portable and wireless applications.

Original languageEnglish (US)
Pages (from-to)1974-1985
Number of pages12
JournalACS Nano
Volume16
Issue number2
DOIs
StatePublished - Feb 22 2022

Keywords

  • hybrid microsupercapacitors
  • laser printing
  • Prussian blue
  • TiCT MXene
  • water lift-off lithography

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy

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