Synthesis of three isoelemental MXenes and their structure–property relationships

Downes, Marley ; Shuck, Christopher E. ; Wang, Ruocun John ; Michalowski, Pawel Piotr ; Shochat, Jonathan ; Zhang, Danzhen ; Shekhirev, Mikhail ; Yang, Yizhou ; Zaluzec, Nestor J. ; Arenal, Raul ; May, Steven J. ; Gogotsi, Yury

Resumen: The MXene family has rapidly expanded since its discovery in2011 to include nearly 50 unique MXenes, not accounting for solid solutionsand diverse surface terminations. However, a question raised since theirdiscovery has been: What is the effect of n? In other words, how does thenumber of layers affect the MXene properties? To date, no direct study of theimpact of n has been conducted due to the lack of isoelemental MXenecompositions spanning more than two n values. Herein, we report on a systemof three MXenes with identical M-site chemistries, (Mo2/3V1/3)n+1CnTx (n = 1,2, and 3), allowing for the study of MXene structure−property relationshipsacross n, for the first time. Chemical analysis of the samples shows completeand partial ordering of the M-elements in the n = 2 and 3 samples, respectively.We show that sample stability gradually evolves as n is increased from 1 to 3,while electronic and electrochemical properties exhibit more significant changes in going from n = 1 to 2 than from n = 2 to 3.

Idioma: Inglés

DOI: 10.1021/jacs.4c11111

Año: 2024

Publicado en: Journal of the American Chemical Society 146, 45 (2024), 31159-31168
ISSN: 0002-7863

Financiación: info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PRTR-C17.I1
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-104739GB-100

Tipo y forma: Article (Published version)