Adding a New Member to the MXene Family: Synthesis, Structure, and Electrocatalytic Activity for the Hydrogen Evolution Reaction of V 4 C 3 T x

Minh H. Tran, Timo Schäfer, Ali Shahraei, Michael Dürrschnabel, Leopoldo Molina-Luna, Ulrike I. Kramm, Christina S. Birkel

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Two-dimensional transition-metal-based carbides (or nitrides), so-called MXenes, that can be derived from the three-dimensional MAX phases, have attracted considerable attention throughout the past couple of years. The particular structure together with their hydrophilic and metallic nature make them promising candidates for a plethora of applications, such as sensors, electrodes, and catalysts. Obviously, the respective chemical and physical properties are highly dependent on the chemical composition, stoichiometry, and surface structure of the MXene. Here, we introduce a new member of the MXene family, V 4 C 3 T x (T representing the surface groups), based on the chemical exfoliation of the 413 MAX phase V 4 AlC 3 by treatment with aqueous hydrofluoric acid. X-ray powder diffraction data together with scale-bridging electron microscopy studies prove the successful removal of aluminum from the MAX phase structure. The electrocatalytic activity for the hydrogen evolution reaction of this new MXene is tested in acidic solution over the course of 100 cycles. Interestingly, we find a significant improvement of the catalytic performance over time (i.e., the overpotential required to achieve a current density of 10 mA cm -2 decreases by almost 200 mV) that we assign to the removal of an oxide species from the surface of the MXene, as shown by XPS measurements. Our study provides crucial experimental data of the electrocatalytic activity of MXenes together with the evolution of its surface structure that is also relevant for other transition-metal-based MXenes in the context of further potential applications.

Original languageEnglish (US)
Pages (from-to)3908-3914
Number of pages7
JournalACS Applied Energy Materials
Volume1
Issue number8
DOIs
StatePublished - Aug 27 2018
Externally publishedYes

Fingerprint

Surface structure
Transition metals
Hydrogen
Hydrofluoric Acid
Hydrofluoric acid
Phase structure
Aluminum
Nitrides
Stoichiometry
X ray powder diffraction
Oxides
Chemical properties
Electron microscopy
Carbides
Current density
X ray photoelectron spectroscopy
Physical properties
Electrodes
Catalysts
Sensors

Keywords

  • carbides
  • electrocatalysis
  • hydrogen evolution reaction
  • MAX phase
  • MXene
  • V AlC
  • V C T

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Chemical Engineering (miscellaneous)
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Adding a New Member to the MXene Family : Synthesis, Structure, and Electrocatalytic Activity for the Hydrogen Evolution Reaction of V 4 C 3 T x. / Tran, Minh H.; Schäfer, Timo; Shahraei, Ali; Dürrschnabel, Michael; Molina-Luna, Leopoldo; Kramm, Ulrike I.; Birkel, Christina S.

In: ACS Applied Energy Materials, Vol. 1, No. 8, 27.08.2018, p. 3908-3914.

Research output: Contribution to journalArticle

Tran, Minh H. ; Schäfer, Timo ; Shahraei, Ali ; Dürrschnabel, Michael ; Molina-Luna, Leopoldo ; Kramm, Ulrike I. ; Birkel, Christina S. / Adding a New Member to the MXene Family : Synthesis, Structure, and Electrocatalytic Activity for the Hydrogen Evolution Reaction of V 4 C 3 T x. In: ACS Applied Energy Materials. 2018 ; Vol. 1, No. 8. pp. 3908-3914.
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