Unravelling the role of dopants in the electrocatalytic activity of ceria towards CO<sub>2</sub> reduction in solid oxide electrolysis cells

Sala, Elena Marzia; Mazzanti, Nicola; Chiabrera, Francesco; Sanna, Simone; Mogensen, Mogens Bjerg; Hendriksen, Peter Vang; Ma, Zhongtao; Simonsen, Søren Bredmose; Chatzichristodoulou, Christodoulos

doi:10.1039/d2cp05157e

Cited by 3 publications

(1 citation statement)

References 95 publications

(143 reference statements)

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“…The essential change is simply to assume that it is Ni + -ion that migrates on the YSZ-surface layer as either Ni + + OHin case of steam electrolysis, or as Ni + ions balanced with CO 3 radical ions in case of CO 2 electrolysis. "Ni 2 CO 3 " on a YSZ surface is not assumed to be any kind of crystalline Ni 2 CO 3 , but rather a layer of adsorbed Ni + and CO 3 in which CO 3 2has one of its oxygen atoms incorporated into the crystalline YSZ surface which is formed by reaction between CO 2 molecule, a Ni atom, and an unsaturated surface oxygen with one electron (O -) in similarity to CO 2 reduction on ceria (13). The process is sketched in Figure 2 Note, that all reactions are reversible.…”

Section: Ecs Transactions 112 (5) 71-80 (2023)mentioning

confidence: 99%

(Invited) On Degradation Mechanisms of Ni-YSZ Fuel Electrodes in Solid Oxide Cells

Mogensen,

Mogensen

2023

ECS Trans.

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This is a continuation of a series of articles by the principal author on degradation of Ni-YSZ cermet electrodes. This one gives a brief listing of the main aspects and in particular of the disagreements in literature on the long term degradation mechanisms of Ni-YSZ electrodes at high current density. Two main hypotheses are presented, and the weaknesses and strengths are briefly discussed. Recommendations for alleviation of the degradation are given as well as for needed experiments in the future.

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Section: Ecs Transactions 112 (5) 71-80 (2023)mentioning

confidence: 99%

(Invited) On Degradation Mechanisms of Ni-YSZ Fuel Electrodes in Solid Oxide Cells

Mogensen,

Mogensen

2023

ECS Trans.

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Experimental Requirements for High‐Temperature Solid‐State Electrochemical TEM Experiments

Ma,

Chatzichristodoulou,

Dacayan

et al. 2024

Small Methods

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The ability to perform both electrochemical and structural/elemental characterization in the same experiment and at the nanoscale allows to directly link electrochemical performance to the material properties and their evolution over time and operating conditions. Such experiments can be important for the further development of solid oxide cells, solid‐state batteries, thermal electrical devices, and other solid‐state electrochemical devices. The experimental requirements for conducting solid‐state electrochemical TEM experiments in general, including sample preparation, electrochemical measurements, failure factors, and possibilities for optimization, are presented and discussed. Particularly, the methodology of performing reliable electrochemical impedance spectroscopy measurements in reactive gases and at elevated temperatures for both single materials and solid oxide cells is described. The presented results include impedance measurements of electronic conductors, an ionic conductor, and a mixed ionic and electronic conductor, all materials typically applied in solid oxide fuel and electrolysis cells. It is shown that how TEM and impedance spectroscopy can be synergically integrated to measure the transport and surface exchange properties of materials with nanoscale dimensions and to visualize their structural and elemental evolution via TEM/STEM imaging and spectroscopy.

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Impact of nickel on the surface reaction in ceria-based electrodes for solid oxide cells

Kullmann,

Esau,

Limbeck

et al. 2025

Journal of Power Sources

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Unravelling the role of dopants in the electrocatalytic activity of ceria towards CO₂ reduction in solid oxide electrolysis cells

Abstract: CO2 reduction in Solid Oxide Electrolysis Cells (SOECs) is a key-technology for the transition to a sustainable energy infrastructure and chemical industry. Ceria (CeO2) holds great promise in developing highly...

Cited by 3 publications

References 95 publications

(Invited) On Degradation Mechanisms of Ni-YSZ Fuel Electrodes in Solid Oxide Cells

(Invited) On Degradation Mechanisms of Ni-YSZ Fuel Electrodes in Solid Oxide Cells

Experimental Requirements for High‐Temperature Solid‐State Electrochemical TEM Experiments

Impact of nickel on the surface reaction in ceria-based electrodes for solid oxide cells

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Unravelling the role of dopants in the electrocatalytic activity of ceria towards CO2 reduction in solid oxide electrolysis cells

Abstract: CO2 reduction in Solid Oxide Electrolysis Cells (SOECs) is a key-technology for the transition to a sustainable energy infrastructure and chemical industry. Ceria (CeO2) holds great promise in developing highly...

Cited by 3 publications

References 95 publications

(Invited) On Degradation Mechanisms of Ni-YSZ Fuel Electrodes in Solid Oxide Cells

(Invited) On Degradation Mechanisms of Ni-YSZ Fuel Electrodes in Solid Oxide Cells

Experimental Requirements for High‐Temperature Solid‐State Electrochemical TEM Experiments

Impact of nickel on the surface reaction in ceria-based electrodes for solid oxide cells

Contact Info

Product

Resources

About

Unravelling the role of dopants in the electrocatalytic activity of ceria towards CO₂ reduction in solid oxide electrolysis cells