RT journal article
T1 Composite MAX phase/MXene/Ni electrodes with a porous 3D structure for hydrogen evolution and energy storage application
A1 Sergiienko, S. A.
A1 Lajaunie, Luc Cyrille Jacques
A1 Rodríguez-Castellón, E.
A1 Constantinescu, G.
A1 Lopes, D. V.
A1 Shcherban, N. D.
A1 Calvino Gámez, José Juan
A1 Labrincha, Joao A.
A1 Sofer, Z.
A1 Kovalevsky, A. V.
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
AB MXenes, a family of two-dimensional (2D) transition metal carbides, have been discovered as exciting candidates for various energy storage and conversion applications, including green hydrogen production by water splitting. Today, these materials mostly remain interesting objects for in-depth fundamental studies and scientific curiosity due to issues related to their preparation and environmental stability, limiting potential industrial applications. This work proposes a simple and inexpensive concept of composite electrodes composed of molybdenum- and titanium-containing MAX phases and MXene as functional materials. The concept is based on the modification of the initial MAX phase by the addition of metallic Ni, tuning Al- and carbon content and synthesis conditions, followed by fluoride-free etching under alkaline conditions. The proposed methodology allows producing a composite electrode with a well-developed 3D porous MAX phase-based structure acting as a support for electrocatalytic species, including MXene, and possessing good mechanical integrity. Electrochemical tests have shown a high electrochemical activity of such electrodes towards the hydrogen evolution reaction (HER), combined with a relatively high areal capacitance (up to 10 F cm−2).
PB Royal Society of Chemistry
SN 2046-2069
YR 2024
FD 2024-01-10
LK http://hdl.handle.net/10498/32398
UL http://hdl.handle.net/10498/32398
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026