Tuning the Electronic Structure of W18O49 via Dual Doping for Efficient Oxygen Evolution Reaction
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F22%3A10251032" target="_blank" >RIV/61989100:27710/22:10251032 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:000813033600001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:000813033600001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsaem.1c03814" target="_blank" >10.1021/acsaem.1c03814</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Tuning the Electronic Structure of W18O49 via Dual Doping for Efficient Oxygen Evolution Reaction
Popis výsledku v původním jazyce
Doping is an effective approach to tune the structure of materials at an atomic level, optimizing their performance toward various energy conversion applications. Herein, we show that nickel (Ni) and iron (Fe) dual doping activates the electrochemical inert W18O49 into a highly active electrocatalyst toward the oxygen evolution reaction (OER). Compared to monodoping, dual doping of Ni and Fe in the lattice of W18O49 results in the synergistic modulation of the electronic structure and physicochemical properties of tungsten oxides. The Ni and Fe dual-doped W18O49 (NiFe-W18O49) achieves a low overpotential of 325 mV at a current density of 10 mA cm(-2). and a Tafel slope of 42 mV deC(-1) for the OER in 0.1 M potassium hydroxide (KOH) solution, comparable with those of state-of-the-art IrO2. The Zn-air battery based on a NiFe-W18O49 cathode displays a long-term cycling durability of over 180 h, superior to the battery with a commercial Pt/C-IrO2 cathode. Combined experimental analysis and density functional theory calculations unveil that the distorted geometric structure and regulated electronic structure of W18O49 contribute crucially to the activation of its inert catalytic activity.
Název v anglickém jazyce
Tuning the Electronic Structure of W18O49 via Dual Doping for Efficient Oxygen Evolution Reaction
Popis výsledku anglicky
Doping is an effective approach to tune the structure of materials at an atomic level, optimizing their performance toward various energy conversion applications. Herein, we show that nickel (Ni) and iron (Fe) dual doping activates the electrochemical inert W18O49 into a highly active electrocatalyst toward the oxygen evolution reaction (OER). Compared to monodoping, dual doping of Ni and Fe in the lattice of W18O49 results in the synergistic modulation of the electronic structure and physicochemical properties of tungsten oxides. The Ni and Fe dual-doped W18O49 (NiFe-W18O49) achieves a low overpotential of 325 mV at a current density of 10 mA cm(-2). and a Tafel slope of 42 mV deC(-1) for the OER in 0.1 M potassium hydroxide (KOH) solution, comparable with those of state-of-the-art IrO2. The Zn-air battery based on a NiFe-W18O49 cathode displays a long-term cycling durability of over 180 h, superior to the battery with a commercial Pt/C-IrO2 cathode. Combined experimental analysis and density functional theory calculations unveil that the distorted geometric structure and regulated electronic structure of W18O49 contribute crucially to the activation of its inert catalytic activity.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20400 - Chemical engineering
Návaznosti výsledku
Projekt
—
Návaznosti
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
ACS Applied Energy Materials
ISSN
2574-0962
e-ISSN
—
Svazek periodika
5
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
9
Strana od-do
3208-3216
Kód UT WoS článku
000813033600001
EID výsledku v databázi Scopus
—