Operando Insights on the Degradation Mechanisms of Rhenium-Doped and Undoped Molybdenum Disulfide Nanocatalysts During Hydrogen Evolution Reaction and Open-Circuit Conditions

被引：1

作者：

Aymerich-Armengol, Raquel ^{[1
]}

Vega-Paredes, Miquel ^{[1
]}

Wang, Zhenbin ^{[2
]}

Mingers, Andrea M. ^{[1
]}

Camuti, Luca ^{[3
,4
]}

Kim, Jeeung ^{[5
]}

Bae, Jeongwook ^{[5
]}

Efthimiopoulos, Ilias ^{[1
]}

Sahu, Rajib ^{[1
]}

Podjaski, Filip ^{[6
]}

Rabe, Martin ^{[1
]}

Scheu, Christina ^{[1
]}

Lim, Joohyun ^{[5
]}

Zhang, Siyuan ^{[1
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany

[2] City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China

[3] Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany

[4] Univ Munich LMU, Dept Chem, Butenandtstr 5-13 D, D-81377 Munich, Germany

[5] Kangwon Natl Univ, Inst Mol Sci & Fus Technol, Multidimens Genom Res Ctr, Dept Chem, Chunchon 24341, Gangwon, South Korea

[6] Imperial Coll London, Dept Chem, London W12 0BZ, England

来源：

ADVANCED FUNCTIONAL MATERIALS | 2025年 / 35卷 / 03期

基金：

新加坡国家研究基金会; 英国科研创新办公室;

关键词：

hydrogen evolution reaction; Identical location electron microscopy; MoS2; nanostructures; operando spectroscopy; water electrolysis; ACTIVE EDGE SITES; PHASE-TRANSITION; MOS2; NANOSHEETS; STABILITY; CATALYSTS; SPECTROSCOPY; SURFACE;

D O I：

10.1002/adfm.202413720

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Molybdenum disulfide (MoS2) nanostructures are promising catalysts for proton-exchange-membrane (PEM) electrolyzers to replace expensive noble metals. Their large-scale application demands high activity for the hydrogen evolution reaction (HER) as well as robust durability. Doping is commonly applied to enhance the HER activity of MoS2-based nanocatalysts, but the effect of dopants on the electrochemical and structural stability is yet to be discussed. Herein, operando electrochemical measurements to the structural evolution of the materials down to the nanometric scale are correlated by identical location electron microscopy and spectroscopy. The range of stable operation for MoS2 nanocatalysts with and without rhenium doping is experimentally defined. The responsible degradation mechanisms at first electrolyte contact, open circuit stabilization, and HER conditions are experimentally identified and confirmed with the calculated Pourbaix diagram of Re-doped MoS2. Doping MoS2-based nanocatalysts is validated as a promising strategy for continuing the improvement of high-performance and durable PEM electrolyzers.

引用

页数：11

共 1 条

[1] Expanding the Potential of Identical Location Scanning Transmission Electron Microscopy for Gas Evolving Reactions: Stability of Rhenium Molybdenum Disulfide Nanocatalysts for Hydrogen Evolution Reaction
Vega-Paredes, Miquel
Scheu, Christina
Aymerich-Armengol, Raquel
ACS APPLIED MATERIALS & INTERFACES, 2023, 15 (40) : 46895 - 46901

← 1 →