Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cells
Protonic ceramic electrolysis cell (PCEC) is a promising technology for production of pure dry hydrogen due to the low operating temperature and high efficiency. One of the obstacles for commercialization of PCEC technology is the poor performance and insufficient long-term durability of the oxygen...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2022-01-01
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| Series: | Advanced Powder Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772834X21000038 |
| _version_ | 1811199554263973888 |
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| author | Qingjie Wang Xiaofeng Tong Sandrine Ricote Rokas Sažinas Peter Vang Hendriksen Ming Chen |
| author_facet | Qingjie Wang Xiaofeng Tong Sandrine Ricote Rokas Sažinas Peter Vang Hendriksen Ming Chen |
| author_sort | Qingjie Wang |
| collection | DOAJ |
| description | Protonic ceramic electrolysis cell (PCEC) is a promising technology for production of pure dry hydrogen due to the low operating temperature and high efficiency. One of the obstacles for commercialization of PCEC technology is the poor performance and insufficient long-term durability of the oxygen electrode. In this study, we address the above challenge by designing a LaCoO3 (LC) catalyst infiltrated porous BaZr0.8Y0.2O3−δ (BZY20) backbone electrode (LC-BZY20). The performance and durability of the LC-BZY20 electrode are investigated on symmetrical cells using electrochemical impedance spectroscopy (EIS). The total electrode polarization resistance (RP) values of the electrode are 0.56, 1.24, 2.18, and 2.90 Ω cm2 in 3 vol% humidified synthetic air at 600, 550, 500, and 450 °C, respectively, indicating good electrochemical performance of the LC-BZY20 electrode. Furthermore, the LC-BZY20 electrode displays good stability, without significant performance degradation when tested at 600 °C in 10 vol% humidified air for 900 h. We further study the influence of oxygen partial pressure (Po2) and steam partial pressure (PH2O) on the response of the EIS data, and propose a set of chemical and electrochemical processes involved in the steam splitting reaction in the LC-BZY20 electrode. |
| first_indexed | 2024-04-12T01:50:38Z |
| format | Article |
| id | doaj.art-96c6ef8928b941c5bcb7d58c071fa732 |
| institution | Directory Open Access Journal |
| issn | 2772-834X |
| language | English |
| last_indexed | 2024-04-12T01:50:38Z |
| publishDate | 2022-01-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Advanced Powder Materials |
| spelling | doaj.art-96c6ef8928b941c5bcb7d58c071fa7322022-12-22T03:52:57ZengKeAi Communications Co. Ltd.Advanced Powder Materials2772-834X2022-01-0111100003Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cellsQingjie Wang0Xiaofeng Tong1Sandrine Ricote2Rokas Sažinas3Peter Vang Hendriksen4Ming Chen5Department of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800, Kgs. Lyngby, DenmarkDepartment of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800, Kgs. Lyngby, Denmark; Innovation Research Institute of Energy and Power, North China Electric Power University, Beijing, 102206, ChinaColorado School of Mines, 1500 Illinois Street, Golden, CO, 80401, USADepartment of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800, Kgs. Lyngby, DenmarkDepartment of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800, Kgs. Lyngby, DenmarkDepartment of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800, Kgs. Lyngby, Denmark; Corresponding author.Protonic ceramic electrolysis cell (PCEC) is a promising technology for production of pure dry hydrogen due to the low operating temperature and high efficiency. One of the obstacles for commercialization of PCEC technology is the poor performance and insufficient long-term durability of the oxygen electrode. In this study, we address the above challenge by designing a LaCoO3 (LC) catalyst infiltrated porous BaZr0.8Y0.2O3−δ (BZY20) backbone electrode (LC-BZY20). The performance and durability of the LC-BZY20 electrode are investigated on symmetrical cells using electrochemical impedance spectroscopy (EIS). The total electrode polarization resistance (RP) values of the electrode are 0.56, 1.24, 2.18, and 2.90 Ω cm2 in 3 vol% humidified synthetic air at 600, 550, 500, and 450 °C, respectively, indicating good electrochemical performance of the LC-BZY20 electrode. Furthermore, the LC-BZY20 electrode displays good stability, without significant performance degradation when tested at 600 °C in 10 vol% humidified air for 900 h. We further study the influence of oxygen partial pressure (Po2) and steam partial pressure (PH2O) on the response of the EIS data, and propose a set of chemical and electrochemical processes involved in the steam splitting reaction in the LC-BZY20 electrode.http://www.sciencedirect.com/science/article/pii/S2772834X21000038Protonic ceramic electrolysis cellOxygen electrodeInfiltration |
| spellingShingle | Qingjie Wang Xiaofeng Tong Sandrine Ricote Rokas Sažinas Peter Vang Hendriksen Ming Chen Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cells Advanced Powder Materials Protonic ceramic electrolysis cell Oxygen electrode Infiltration |
| title | Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cells |
| title_full | Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cells |
| title_fullStr | Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cells |
| title_full_unstemmed | Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cells |
| title_short | Nano-LaCoO3 infiltrated BaZr0.8Y0.2O3−δ electrodes for steam splitting in protonic ceramic electrolysis cells |
| title_sort | nano lacoo3 infiltrated bazr0 8y0 2o3 δ electrodes for steam splitting in protonic ceramic electrolysis cells |
| topic | Protonic ceramic electrolysis cell Oxygen electrode Infiltration |
| url | http://www.sciencedirect.com/science/article/pii/S2772834X21000038 |
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