2D Germanane-MXene Heterostructures for Cations Intercalation in Energy Storage Applications

Ghosh K, Ng S, Lazar P, Padinjareveetil AKK, Michalička J, Pumera M (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Advanced Functional Materials Wiley-VCH Verlag

Book Volume: 34

Article Number: 2308793

Journal Issue: 7

DOI: 10.1002/adfm.202308793

Abstract

Heterostructures offer an exceptional possibility of combining individual 2D materials into a new material having altered properties compared to the parent materials. Germanane (GeH) is a 2D material with many favorable properties for energy storage and catalysis, however, its performance is hindered by its low electrical conductivity. To address the low electrochemical performance of GeH, a heterostructure of GeH and Ti3C2Tx is fabricated. The Ti3C2TX is a layered material belonging to the family of MXenes. The resulting heterostructure (GeMXene) at a defined mass ratio of GeH and Ti3C2Tx shows superior capacitive performance that surpasses that of both pristine materials. The effect of the size of cations and anions for intercalation into GeMXene in different aqueous salt solutions is studied. GeMXene allows only cation intercalation, which is evidenced by the gravimetric electrochemical quartz crystal microbalance (EQCM) technique. The capacitive performance of the GeMXene is compared in neutral, acidic, and alkaline electrolytes to determine the best electrochemical performance. This unleashes the potential use of GeMXene heterostructure in different electrolytes for supercapacitors and batteries. This work will pave the way to explore the heterostructures of other 2D materials such as novel MXenes and functionalized germanane for highly energy-storage efficient systems, and beyond.

Involved external institutions

Brno University of Technology (BUT) / Vysoké učení technické v Brně (VUT) CZ Czech Republic (CZ) Palacky University Olomouc / Univerzita Palackého v Olomouci CZ Czech Republic (CZ)

How to cite

APA:

Ghosh, K., Ng, S., Lazar, P., Padinjareveetil, A.K.K., Michalička, J., & Pumera, M. (2024). 2D Germanane-MXene Heterostructures for Cations Intercalation in Energy Storage Applications. Advanced Functional Materials, 34(7). https://doi.org/10.1002/adfm.202308793

MLA:

Ghosh, Kalyan, et al. "2D Germanane-MXene Heterostructures for Cations Intercalation in Energy Storage Applications." Advanced Functional Materials 34.7 (2024).

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