UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Electrochemical Behavior of Ti3C2Tx MXene in Environmentally Friendly Methanesulfonic Acid Electrolyte

Zhao, X; Dall'Agnese, C; Chu, X-F; Zhao, S; Chen, G; Gogotsi, Y; Gao, Y; (2019) Electrochemical Behavior of Ti3C2Tx MXene in Environmentally Friendly Methanesulfonic Acid Electrolyte. ChemSusChem , 12 (19) pp. 4480-4486. 10.1002/cssc.201901746. Green open access

[thumbnail of Dallagnese_AAM for UCL.pdf]
Preview
Text
Dallagnese_AAM for UCL.pdf - Accepted Version

Download (744kB) | Preview

Abstract

Two‐dimensional transition metal carbides, nitrides and carbonitrides called MXenes have gained much attention as electrode materials in electrochemical energy storage devices. In particular, Ti3C2Tx achieved outstanding performance in common sulfuric acid (H2SO4) electrolyte. In this work, a more environmentally friendly alternative acidic electrolyte, methanesulfonic acid (MSA CH3SO3H) is proposed. The energy storage performance of Ti3C2Tx in aqueous and neat MSA ionic liquid electrolytes is investigated. The specific capacitance of 298 F g‐1 was obtained at a scan rate of 5 mVs‐1 in 4 M MSA and it exhibits excellent cycle stability with retention of nearly 100% over 10,000 cycles. This electrochemical performance is similar to that of Ti3C2Tx in H2SO4, but using a greener electrolyte. In‐situ X‐ray diffraction analysis reveals the intercalation charge storage mechanism. Specifically, the lattice changes up to 5.16 Å during cycling, which is the largest reversible volume change observed in MXenes in aqueous electrolytes.

Type: Article
Title: Electrochemical Behavior of Ti3C2Tx MXene in Environmentally Friendly Methanesulfonic Acid Electrolyte
Location: Germany
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/cssc.201901746
Publisher version: https://doi.org/10.1002/cssc.201901746
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: carbides, electrolytes, sulfonic acids, MXenes, supercapacitors
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery
URI: https://discovery.ucl.ac.uk/id/eprint/10080095
Downloads since deposit
196Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item