Exploring Mg-Sn alloys as electrocatalysts for CO2 electroreduction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932189" target="_blank" >RIV/60461373:22310/25:43932189 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0926860X24004952" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0926860X24004952</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcata.2024.120050" target="_blank" >10.1016/j.apcata.2024.120050</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Exploring Mg-Sn alloys as electrocatalysts for CO2 electroreduction

Popis výsledku v původním jazyce

Tin is one of the most selective electrocatalysts for CO2 reduction (CO2RR), mostly thanks to its poor activity towards the hydrogen evolution reaction (HER). Still, Sn electrodes are limited by their very high overpotential. We decided to investigate the electrochemical CO2RR catalytic activity of tin-magnesium alloys that can be easily obtained by thermal annealing from the elemental metallic powders. We found that the alloys exhibit a slightly improved activity and selectivity towards CO2RR with formate as dominant product according to electrochemical and chemical analysis. Post-mortem characterization confirmed that this effect is not due to the alloys performance, but to Sn re-structuration. Most of the Mg is leached from the alloy into the electrolyte during CO2RR, leaving a highly porous Sn structure. These changes in morphology and surface area as triggered by Mg leaching, appear to be at the origin of the enhanced electrocatalytic performance.

Název v anglickém jazyce

Exploring Mg-Sn alloys as electrocatalysts for CO2 electroreduction

Popis výsledku anglicky

Tin is one of the most selective electrocatalysts for CO2 reduction (CO2RR), mostly thanks to its poor activity towards the hydrogen evolution reaction (HER). Still, Sn electrodes are limited by their very high overpotential. We decided to investigate the electrochemical CO2RR catalytic activity of tin-magnesium alloys that can be easily obtained by thermal annealing from the elemental metallic powders. We found that the alloys exhibit a slightly improved activity and selectivity towards CO2RR with formate as dominant product according to electrochemical and chemical analysis. Post-mortem characterization confirmed that this effect is not due to the alloys performance, but to Sn re-structuration. Most of the Mg is leached from the alloy into the electrolyte during CO2RR, leaving a highly porous Sn structure. These changes in morphology and surface area as triggered by Mg leaching, appear to be at the origin of the enhanced electrocatalytic performance.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

APPLIED CATALYSIS A-GENERAL

ISSN

0926-860X

e-ISSN

1873-3875

Svazek periodika

690

Číslo periodika v rámci svazku

25 January 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

nestránkováno

Kód UT WoS článku

001372520000001

EID výsledku v databázi Scopus

2-s2.0-85210537775