Composite MAX phase/MXene/Ni electrodes with a porous 3D structure for hydrogen evolution and energy storage application

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43929944" target="_blank" >RIV/60461373:22310/24:43929944 - isvavai.cz</a>

Result on the web

<a href="https://pubs.rsc.org/en/content/articlehtml/2024/ra/d3ra07335a" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2024/ra/d3ra07335a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3ra07335a" target="_blank" >10.1039/d3ra07335a</a>

Result language

angličtina

Original language name

Composite MAX phase/MXene/Ni electrodes with a porous 3D structure for hydrogen evolution and energy storage application

Original language description

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). The MAX phase/MXene/Ni composite with 3D porous structure prepared was assessed for energy conversion and storage application, using the hydrogen evolution reaction under alkaline conditions as a model system.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/EH22_010%2F0003004" target="_blank" >EH22_010/0003004: Chemical Fellows V</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

RSC Advances

ISSN

2046-2069

e-ISSN

2046-2069

Volume of the periodical

14

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

18

Pages from-to

3052-3069

UT code for WoS article

001144069400001

EID of the result in the Scopus database

2-s2.0-85183078646