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Titanium germanium carbide MAX phase electrocatalysts for supercapacitors and alkaline water electrolysis processes
Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA.
Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Environmental Engineering, Gebze Technical University, 41400 Gebze, Turkey.
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.ORCID iD: 0000-0002-6282-9004
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2023 (English)In: Materials Today Chemistry, E-ISSN 2468-5194, Vol. 33, article id 101714Article in journal (Refereed) Published
Abstract [en]

Developing electrochemically active, stable, and low-cost electrocatalysts for electrochemical devices is a significant breakthrough. Accordingly, MAX phases, emerging three-dimensional materials, are considered outstanding candidates due to their excellent electrocatalytic and electrochemical properties. Herein, the titanium germanium carbide (Ti3GeC2) MAX phase with a layered structure manufactured through reactive sintering was regarded as the electrocatalyst. In the current work, the electrocatalytic activity of the Ti3GeC2 was investigated for electrochemical devices. It was observed that adding activated carbon to the Ti3GeC2 enhances the conductivity and active area, leading to an excellent specific capacitance (349 Fg-1) for supercapacitors. Also, the capacitance of Ti3GeC2 was increased by increasing the number of cyclic voltammetry cycles. In another application, Ti3GeC2 showed substantial activity for hydrogen and oxygen evolution reactions in alkaline media. As a result, the alkaline water electrolysis system using Ti3GeC2 showed the highest current density of 10 mA cm−2 at 1.36 V and outstanding stability over 400 cycles.

Place, publisher, year, edition, pages
Elsevier BV , 2023. Vol. 33, article id 101714
Keywords [en]
MAX phase, Multifunctional materials, Supercapacitor, Titanium germanium carbide, Water electrolysis
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-337442DOI: 10.1016/j.mtchem.2023.101714ISI: 001080312700001Scopus ID: 2-s2.0-85171451141OAI: oai:DiVA.org:kth-337442DiVA, id: diva2:1802991
Note

QC 20231006

Available from: 2023-10-06 Created: 2023-10-06 Last updated: 2024-02-12Bibliographically approved

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khataee, Amirreza

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