Phase-Engineering of 1T/2H Molybdenum Disulfide by Using Ionic
Liquid for Enhanced Electrocatalytic Hydrogen Evolution

J 2020

Phase-Engineering of 1T/2H Molybdenum Disulfide by Using Ionic Liquid for Enhanced Electrocatalytic Hydrogen Evolution

ZHANG, X.; H. LI; H. YANG; F. XIE; Z.H. YUAN et al.

Základní údaje

Originální název

Phase-Engineering of 1T/2H Molybdenum Disulfide by Using Ionic Liquid for Enhanced Electrocatalytic Hydrogen Evolution

Autoři

ZHANG, X.; H. LI; H. YANG; F. XIE; Z.H. YUAN; Lenka ZAJÍČKOVÁ a W.J. LI

Vydání

ChemElectroChem, WEINHEIM, WILEY-V C H VERLAG GMBH, 2020, 2196-0216

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10405 Electrochemistry

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.590

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/20:00118390

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

molybdenum disulfide; ionic liquid; 1T phase; phase engineering; electrocatalytic hydrogen evolution

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 15. 3. 2021 19:29, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

Two-dimensional (2D) molybdenum disulfide (MoS2) has been regarded as an attractive non-precious-metal electrocatalyst for the hydrogen evolution reaction (HER). Engineering the crystal phase of MoS(2)to activate the basal planes/edges and simultaneously improve the electronic conductivity is currently an effective strategy for enhancing its HER activity. Herein, we report a facile and efficient hydrothermal route to prepare 1T/2H-MoS(2)catalysts using ionic liquid (N-butyl pyridinium bromide, [BPy]Br) as a structure-directing agent, where the large steric hindrance of [BPy]Br and the mutual pi-stacking interaction induce the phase transition of MoS(2)from 2H to the 1T phase. By adding a suitable amount of [BPy]Br in the reaction system, the portion of the 1T phase in 1T/2H-MoS(2)was increased, which can expose more active sites on its basal planes/edges as well as facilitate charge transfer for the HER. Consequently, 1T/2H-MoS(2)with the 1T portion of 91.9 % exhibits a significantly enhanced HER activity compared to that of the MoS(2)synthesized without the aid of [BPy]Br, in terms of a lower Tafel slope of 59 mV dec(-1). This synthesis strategy provides valuable guidance for designing the phase structure of MoS2-based electrocatalysts to achieve high HER efficiency.

Citovat

ZHANG, X.; H. LI; H. YANG; F. XIE; Z.H. YUAN; Lenka ZAJÍČKOVÁ a W.J. LI. Phase-Engineering of 1T/2H Molybdenum Disulfide by Using Ionic Liquid for Enhanced Electrocatalytic Hydrogen Evolution. ChemElectroChem. WEINHEIM: WILEY-V C H VERLAG GMBH, 2020, roč. 7, č. 15, s. 3347-3352. ISSN 2196-0216. Dostupné z: https://doi.org/10.1002/celc.202000745.

@article{1752485,
   author = {Zhang, X. and Li, H. and Yang, H. and Xie, F. and Yuan, Z.H. and Zajíčková, Lenka and Li, W.J.},
   article_location = {WEINHEIM},
   article_number = {15},
   doi = {https://doi.org/10.1002/celc.202000745},
   keywords = {molybdenum disulfide; ionic liquid; 1T phase; phase engineering; electrocatalytic hydrogen evolution},
   language = {eng},
   issn = {2196-0216},
   journal = {ChemElectroChem},
   title = {Phase-Engineering of 1T/2H Molybdenum Disulfide by Using Ionic Liquid for Enhanced Electrocatalytic Hydrogen Evolution},
   url = {https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/celc.202000745},
   volume = {7},
   year = {2020}
}

TY  - JOUR
ID  - 1752485
AU  - Zhang, X. - Li, H. - Yang, H. - Xie, F. - Yuan, Z.H. - Zajíčková, Lenka - Li, W.J.
PY  - 2020
TI  - Phase-Engineering of 1T/2H Molybdenum Disulfide by Using Ionic Liquid for Enhanced Electrocatalytic Hydrogen Evolution
JF  - ChemElectroChem
VL  - 7
IS  - 15
SP  - 3347-3352
EP  - 3347-3352
PB  - WILEY-V C H VERLAG GMBH
SN  - 21960216
KW  - molybdenum disulfide
KW  - ionic liquid
KW  - 1T phase
KW  - phase engineering
KW  - electrocatalytic hydrogen evolution
UR  - https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/celc.202000745
N2  - Two-dimensional (2D) molybdenum disulfide (MoS2) has been regarded as an attractive non-precious-metal electrocatalyst for the hydrogen evolution reaction (HER). Engineering the crystal phase of MoS(2)to activate the basal planes/edges and simultaneously improve the electronic conductivity is currently an effective strategy for enhancing its HER activity. Herein, we report a facile and efficient hydrothermal route to prepare 1T/2H-MoS(2)catalysts using ionic liquid (N-butyl pyridinium bromide, [BPy]Br) as a structure-directing agent, where the large steric hindrance of [BPy]Br and the mutual pi-stacking interaction induce the phase transition of MoS(2)from 2H to the 1T phase. By adding a suitable amount of [BPy]Br in the reaction system, the portion of the 1T phase in 1T/2H-MoS(2)was increased, which can expose more active sites on its basal planes/edges as well as facilitate charge transfer for the HER. Consequently, 1T/2H-MoS(2)with the 1T portion of 91.9 % exhibits a significantly enhanced HER activity compared to that of the MoS(2)synthesized without the aid of [BPy]Br, in terms of a lower Tafel slope of 59 mV dec(-1). This synthesis strategy provides valuable guidance for designing the phase structure of MoS2-based electrocatalysts to achieve high HER efficiency.
ER  -

ZHANG, X.; H. LI; H. YANG; F. XIE; Z.H. YUAN; Lenka ZAJÍČKOVÁ a W.J. LI. Phase-Engineering of 1T/2H Molybdenum Disulfide by Using Ionic Liquid for Enhanced Electrocatalytic Hydrogen Evolution. \textit{ChemElectroChem}. WEINHEIM: WILEY-V C H VERLAG GMBH, 2020, roč.~7, č.~15, s.~3347-3352. ISSN~2196-0216. Dostupné z: https://doi.org/10.1002/celc.202000745.

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