Study of carbon dioxide electrolysis at electrode/electrolyte interface: Part II. Pt-YSZ cermet/YSZ interface

G. Tao; K. R. Sridhar; C. L. Chan

doi:10.1016/j.ssi.2004.02.075

Study of carbon dioxide electrolysis at electrode/electrolyte interface: Part II. Pt-YSZ cermet/YSZ interface

G. Tao, K. R. Sridhar, C. L. Chan

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Conference article › peer-review

77 Scopus citations

Abstract

CO₂ electrolysis to produce O₂ has been investigated by means of solid oxide electrolysis (SOE) in preparation for future human exploration of Mars. In order to increase the cell efficiency, a new cermet electrode mixture of Pt and YSZ was studied. SOE cells constructed from the Pt-YSZ cermet electrodes have been tested in a temperature range from 1023 to 1123 K. Comparisons of CO₂ electrolysis performances have been conducted between cells using Pt-YSZ cermet electrodes and Pt electrodes. Characteristics investigated include current-voltage performance, ohmic resistances and activation overpotentials. The results demonstrate that the current density is nearly tripled and the performance improvement made by Pt-YSZ cermet electrodes is more significant at low temperature. Both the ohmic resistance and activation overpotential at the anode decrease significantly for the Pt-YSZ cermet electrodes. It suggests that the contact resistance and the electrode delamination are greatly reduced. However, change to the Pt-YSZ cermet electrodes does not have a profound influence on the cathode.

Original language	English (US)
Pages (from-to)	621-624
Number of pages	4
Journal	Solid State Ionics
Volume	175
Issue number	1-4
DOIs	https://doi.org/10.1016/j.ssi.2004.02.075
State	Published - Nov 30 2004
Event	Fourteenth International Conference on Solid State Ionics - Monterey, CA., United States Duration: Jun 22 2003 → Jun 27 2003

Keywords

Activation overpotential
Carbon dioxide
Electrochemical reaction
Pt-YSZ cermet electrode
Solid oxide electrolysis

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/j.ssi.2004.02.075

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title = "Study of carbon dioxide electrolysis at electrode/electrolyte interface: Part II. Pt-YSZ cermet/YSZ interface",

abstract = "CO2 electrolysis to produce O2 has been investigated by means of solid oxide electrolysis (SOE) in preparation for future human exploration of Mars. In order to increase the cell efficiency, a new cermet electrode mixture of Pt and YSZ was studied. SOE cells constructed from the Pt-YSZ cermet electrodes have been tested in a temperature range from 1023 to 1123 K. Comparisons of CO2 electrolysis performances have been conducted between cells using Pt-YSZ cermet electrodes and Pt electrodes. Characteristics investigated include current-voltage performance, ohmic resistances and activation overpotentials. The results demonstrate that the current density is nearly tripled and the performance improvement made by Pt-YSZ cermet electrodes is more significant at low temperature. Both the ohmic resistance and activation overpotential at the anode decrease significantly for the Pt-YSZ cermet electrodes. It suggests that the contact resistance and the electrode delamination are greatly reduced. However, change to the Pt-YSZ cermet electrodes does not have a profound influence on the cathode.",

keywords = "Activation overpotential, Carbon dioxide, Electrochemical reaction, Pt-YSZ cermet electrode, Solid oxide electrolysis",

author = "G. Tao and Sridhar, {K. R.} and Chan, {C. L.}",

note = "Funding Information: This work was supported by NASA's Microgravity Fluid Physics Program and monitored by the Glenn Research Center (GRC) under grant NAG32154. Special thanks go to Mr. Robert Green for valuable discussions and guidance. ; Fourteenth International Conference on Solid State Ionics ; Conference date: 22-06-2003 Through 27-06-2003",

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T2 - Fourteenth International Conference on Solid State Ionics

AU - Tao, G.

AU - Sridhar, K. R.

AU - Chan, C. L.

N1 - Funding Information: This work was supported by NASA's Microgravity Fluid Physics Program and monitored by the Glenn Research Center (GRC) under grant NAG32154. Special thanks go to Mr. Robert Green for valuable discussions and guidance.

PY - 2004/11/30

Y1 - 2004/11/30

N2 - CO2 electrolysis to produce O2 has been investigated by means of solid oxide electrolysis (SOE) in preparation for future human exploration of Mars. In order to increase the cell efficiency, a new cermet electrode mixture of Pt and YSZ was studied. SOE cells constructed from the Pt-YSZ cermet electrodes have been tested in a temperature range from 1023 to 1123 K. Comparisons of CO2 electrolysis performances have been conducted between cells using Pt-YSZ cermet electrodes and Pt electrodes. Characteristics investigated include current-voltage performance, ohmic resistances and activation overpotentials. The results demonstrate that the current density is nearly tripled and the performance improvement made by Pt-YSZ cermet electrodes is more significant at low temperature. Both the ohmic resistance and activation overpotential at the anode decrease significantly for the Pt-YSZ cermet electrodes. It suggests that the contact resistance and the electrode delamination are greatly reduced. However, change to the Pt-YSZ cermet electrodes does not have a profound influence on the cathode.

AB - CO2 electrolysis to produce O2 has been investigated by means of solid oxide electrolysis (SOE) in preparation for future human exploration of Mars. In order to increase the cell efficiency, a new cermet electrode mixture of Pt and YSZ was studied. SOE cells constructed from the Pt-YSZ cermet electrodes have been tested in a temperature range from 1023 to 1123 K. Comparisons of CO2 electrolysis performances have been conducted between cells using Pt-YSZ cermet electrodes and Pt electrodes. Characteristics investigated include current-voltage performance, ohmic resistances and activation overpotentials. The results demonstrate that the current density is nearly tripled and the performance improvement made by Pt-YSZ cermet electrodes is more significant at low temperature. Both the ohmic resistance and activation overpotential at the anode decrease significantly for the Pt-YSZ cermet electrodes. It suggests that the contact resistance and the electrode delamination are greatly reduced. However, change to the Pt-YSZ cermet electrodes does not have a profound influence on the cathode.

KW - Activation overpotential

KW - Carbon dioxide

KW - Electrochemical reaction

KW - Pt-YSZ cermet electrode

KW - Solid oxide electrolysis

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Study of carbon dioxide electrolysis at electrode/electrolyte interface: Part II. Pt-YSZ cermet/YSZ interface

Abstract

Keywords

ASJC Scopus subject areas

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