MXenes with ordered triatomic-layer borate polyanion terminations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU151545" target="_blank" >RIV/00216305:26620/24:PU151545 - isvavai.cz</a>

Result on the web

<a href="https://www.nature.com/articles/s41563-024-01911-2" target="_blank" >https://www.nature.com/articles/s41563-024-01911-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41563-024-01911-2" target="_blank" >10.1038/s41563-024-01911-2</a>

Result language

angličtina

Original language name

MXenes with ordered triatomic-layer borate polyanion terminations

Original language description

Surface terminations profoundly influence the intrinsic properties of MXenes, but existing terminations are limited to monoatomic layers or simple groups, showing disordered arrangements and inferior stability. Here we present the synthesis of MXenes with triatomic-layer borate polyanion terminations (OBO terminations) through a flux-assisted eutectic molten etching approach. During the synthesis, Lewis acidic salts act as the etching agent to obtain the MXene backbone, while borax generates BO2- species, which cap the MXene surface with an O-B-O configuration. In contrast to conventional chlorine/oxygen-terminated Nb2C with localized charge transport, OBO-terminated Nb2C features band transport described by the Drude model, exhibiting a 15-fold increase in electrical conductivity and a 10-fold improvement in charge mobility at the d.c. limit. This transition is attributed to surface ordering that effectively mitigates charge carrier backscattering and trapping. Additionally, OBO terminations provide Ti3C2 MXene with substantially enriched Li+-hosting sites and thereby a large charge-storage capacity of 420 mAh g-1. Our findings illustrate the potential of intricate termination configurations in MXenes and their applications for (opto)electronics and energy storage. MXenes with borate polyanion terminations are synthesized using a flux-assisted eutectic molten etching approach. These triatomic-layer terminations empower MXenes with considerably improved charge transport and charge storage capabilities.

Czech name

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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

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

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

Nature Materials

ISSN

1476-1122

e-ISSN

1476-4660

Volume of the periodical

23

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

„“-„“

UT code for WoS article

001242165900001

EID of the result in the Scopus database

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