MnO1.88/R-MnO2/Ti3C2(OH/F)x composite electrodes for high-performance pseudo-supercapacitors prepared from reduced MXenes

Xinhua Huang, Xingxing Zhu, Shaohong Luo, Ru Li, Nitul Rajput, Matteo Chiesa, Kin Liao, Vincent Chan

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

MnO1.88/MnO2/Ti3C2Tx composites on Ti3C2Tx (MXenes) were synthesized for potential applications as supercapacitor electrodes. A composite with a cotton candy-like morphology was formed on nanometer-sized Ti3C2Tx flakes by redox reaction using KMnO4 at room temperature, where Ti3C2Tx acts both as a molecular template and as a reducing agent. MnO1.88/MnO2/Ti3C2Tx has a high specific capacity of 312 F g-1 at 1 A g-1, and the capacity retention was over 91% after 5000 charge-discharge cycles. As such, the facile preparation of MnO1.88/MnO2/Ti3C2Tx composites promotes the highly specific pseudo-capacitance of MXenes, which have emerged as highly promising electrode materials.

Original languageBritish English
Pages (from-to)6583-6588
Number of pages6
JournalNew Journal of Chemistry
Volume44
Issue number16
DOIs
StatePublished - 28 Apr 2020

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