Synergized Multimetal Oxides with Amorphous/Crystalline Heterostructure as Efficient Electrocatalysts for Lithium-Oxygen Batteries
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F21%3A10249622" target="_blank" >RIV/61989100:27710/21:10249622 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:000642117600001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:000642117600001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/aenm.202100110" target="_blank" >10.1002/aenm.202100110</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Synergized Multimetal Oxides with Amorphous/Crystalline Heterostructure as Efficient Electrocatalysts for Lithium-Oxygen Batteries
Popis výsledku v původním jazyce
High theoretical specific energy of rechargeable lithium-oxygen (Li-O-2) batteries makes them very promising in the development of long driving range electric vehicles and energy storage on large-scale. However, the large polarization and poor cycling stability associated with insufficient catalytic cathodes and the insulating nature of discharge products limit their practical applications. Here, the fabrication of a trimetallic CoFeCe oxide with an amorphous/crystalline heterostructure acting as an electrocatalyst for the Li-O-2 battery cathode is reported. The best-performing CoFeCe oxide cathode manages to deliver an initial discharge capacity of 12 340 mAh g(-1), while maintaining an impressively enhanced cyclic stability over 2900 h at 100 mA g(-1). As revealed by combined experimental results and density functional theory (DFT) analysis, synergistic interaction between oxide components, amorphous-crystalline domains, unique heterostructure with minimized lattice mismatch, and the enhanced adsorption of the key intermediate LiO2 are critical factors in boosting the electrocatalytic activity of CoFeCe toward the formation of decomposable Li2O2. This work offers a new insight to rationally design and synthesize an effective multimetal oxide electrocatalyst for the Li-O-2 battery cathode.
Název v anglickém jazyce
Synergized Multimetal Oxides with Amorphous/Crystalline Heterostructure as Efficient Electrocatalysts for Lithium-Oxygen Batteries
Popis výsledku anglicky
High theoretical specific energy of rechargeable lithium-oxygen (Li-O-2) batteries makes them very promising in the development of long driving range electric vehicles and energy storage on large-scale. However, the large polarization and poor cycling stability associated with insufficient catalytic cathodes and the insulating nature of discharge products limit their practical applications. Here, the fabrication of a trimetallic CoFeCe oxide with an amorphous/crystalline heterostructure acting as an electrocatalyst for the Li-O-2 battery cathode is reported. The best-performing CoFeCe oxide cathode manages to deliver an initial discharge capacity of 12 340 mAh g(-1), while maintaining an impressively enhanced cyclic stability over 2900 h at 100 mA g(-1). As revealed by combined experimental results and density functional theory (DFT) analysis, synergistic interaction between oxide components, amorphous-crystalline domains, unique heterostructure with minimized lattice mismatch, and the enhanced adsorption of the key intermediate LiO2 are critical factors in boosting the electrocatalytic activity of CoFeCe toward the formation of decomposable Li2O2. This work offers a new insight to rationally design and synthesize an effective multimetal oxide electrocatalyst for the Li-O-2 battery cathode.
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
<a href="/cs/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institut environmentálních technologií - excelentní výzkum</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Advanced Energy Materials
ISSN
1614-6832
e-ISSN
—
Svazek periodika
11
Číslo periodika v rámci svazku
22
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
9
Strana od-do
—
Kód UT WoS článku
000642117600001
EID výsledku v databázi Scopus
—