Electrochemical Reduction of CO2 with Exsolved Metal–Oxide Interfaces in a Proton-Conducting Solid Oxide Electrolyzer

2022 ◽  
Author(s):  
Xirui Zhang ◽  
Lingting Ye ◽  
Kui Xie
Keyword(s):  
Metal Oxide ◽  
Electrochemical Reduction ◽  
Solid Oxide ◽  
Oxide Interfaces ◽  
Proton Conducting ◽  
Reduction Of Co2

Electrochemical reduction of CO2 in a proton conducting solid oxide electrolyser

2011 ◽  
Vol 21 (1) ◽  
pp. 195-198 ◽  
Author(s):  
Kui Xie ◽  
Yaoqing Zhang ◽  
Guangyao Meng ◽  
John T. S. Irvine
Keyword(s):  
Electrochemical Reduction ◽  
Solid Oxide ◽  
Proton Conducting ◽  
Reduction Of Co2

scholarly journals Ce(Mn,Fe)O2–(La,Sr)(Fe,Mn)O3 composite as an active cathode for electrochemical reduction of CO2 in proton conducting solid oxide cells

2015 ◽  
Vol 275 ◽  
pp. 106-109 ◽  
Author(s):  
Tae Ho Shin ◽  
Jae-ha Myung ◽  
Khan M. Naeem ◽  
Cristian Savaniu ◽  
John T.S. Irvine
Keyword(s):  
Electrochemical Reduction ◽  
Solid Oxide ◽  
Proton Conducting ◽  
Reduction Of Co2

scholarly journals Reducible Inverse CeOx-Based Catalyst as a Potential Candidate for Electroreduction

Catalysts ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 22
Author(s):  
Yongli Shen ◽  
Zihui Xiao
Keyword(s):  
Metal Oxide ◽  
Electrochemical Reduction ◽  
Active Sites ◽  
Density Functional ◽  
Metal Catalyst ◽  
Potential Candidate ◽  
Electrochemical Catalyst ◽  
Reducible Oxides ◽  
Ag Catalyst ◽  
Reduction Of Co2

The inverse metal oxide/metal catalyst is very suitable for electrochemical reaction due to unique catalytic properties of metal oxide with small size and good conductivity of metal. To clarify the potential applications of inverse catalyst in electrochemistry, especially for reducible oxides, an inverse CeOx/Ag(111) model electrocatalyst was constructed and investigated by Density Functional Theory (DFT) for CO2 electrochemical reduction. It is found that Ag atoms acting as an electron donor, can partially reduce Ce4+ to Ce3+ in the supported CeOx cluster leading to the formation of interfacial Ce3+ active sites, which could promote the adsorption and reduction of CO2. As expected, all elementary reaction involved in the CO2 electrochemical reduction are more facile on CeOx/Ag(111) than pure Ag catalyst. Besides, the generation of CH3OH and CH4 is favored on CeOx/Ag(111), whereas the formation of CO, CH2O and H2 is obviously suppressed. More importantly, the weak interaction between H2O and CeOx cluster is beneficial for the desorption of OH intermediate, which makes the regeneration of the catalyst become easier and result in a great recyclability. All those results demonstrate that CeOx/Ag(111) is a potential excellent electrochemical catalyst.

scholarly journals Promoting exsolution of RuFe alloy nanoparticles on Sr2Fe1.4Ru0.1Mo0.5O6−δ via repeated redox manipulations for CO2 electrolysis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Houfu Lv ◽  
Le Lin ◽  
Xiaomin Zhang ◽  
Rongtan Li ◽  
Yuefeng Song ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Dynamic Structure ◽  
Solid Oxide ◽  
Structure Evolution ◽  
Electrolysis Cell ◽  
Alloy Nanoparticles ◽  
Oxide Interfaces ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell

AbstractMetal nanoparticles anchored on perovskite through in situ exsolution under reducing atmosphere provide catalytically active metal/oxide interfaces for CO2 electrolysis in solid oxide electrolysis cell. However, there are critical challenges to obtain abundant metal/oxide interfaces due to the sluggish diffusion process of dopant cations inside the bulk perovskite. Herein, we propose a strategy to promote exsolution of RuFe alloy nanoparticles on Sr2Fe1.4Ru0.1Mo0.5O6−δ perovskite by enriching the active Ru underneath the perovskite surface via repeated redox manipulations. In situ scanning transmission electron microscopy demonstrates the dynamic structure evolution of Sr2Fe1.4Ru0.1Mo0.5O6−δ perovskite under reducing and oxidizing atmosphere, as well as the facilitated CO2 adsorption at [email protected]−δ interfaces. Solid oxide electrolysis cell with [email protected]−δ interfaces shows over 74.6% enhancement in current density of CO2 electrolysis compared to that with Sr2Fe1.4Ru0.1Mo0.5O6−δ counterpart as well as impressive stability for 1000 h at 1.2 V and 800 °C.

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