A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells
A thin Pt skeleton with a well-defined porous structure prepared on Y2O3–ZrO2 (YSZ) substrate is used as template to study the effect of impregnated pure CeO2 and Gd-doped CeO2 (GDC) nanoparticles on the electrochemical activity of Pt electrodes and to minimize possible interactions between the infi...
| Main Authors: | , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier BV * North-Holland
2013
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/8697 |
| _version_ | 1848745733816057856 |
|---|---|
| author | Ai, Na Chen, Kongfa Jiang, San Ping |
| author_facet | Ai, Na Chen, Kongfa Jiang, San Ping |
| author_sort | Ai, Na |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A thin Pt skeleton with a well-defined porous structure prepared on Y2O3–ZrO2 (YSZ) substrate is used as template to study the effect of impregnated pure CeO2 and Gd-doped CeO2 (GDC) nanoparticles on the electrochemical activity of Pt electrodes and to minimize possible interactions between the infiltrated phase/solution and the porous skeleton structure. The results show that the activity of Pt cathodes is enhanced by the infiltration of 0.2 mg cm−2 (6.2 wt.%) CeO2 and GDC nanoparticles. For the O2 reduction reaction under open circuit and at low current region the promotion effect of infiltrated CeO2 and GDC nanoparticles is close, but under higher currents the infiltrated GDC exhibits a much higher electrocatalytic activity as compared to the infiltrated CeO2 for the O2 reduction reaction on the Pt electrodes. The high electronic conductivity and high oxygen vacancies of GDC nanoparticles under polarization or dc bias, as compared to that of pure CeO2 are most likely responsible for the high catalytic effect of GDC nanoparticles for the O2 reduction reaction on the Pt. This study demonstrates that the electrochemical performance of infiltrated nano-structured electrodes is fundamentally affected by the catalytic properties of infiltrated nanoparticles. |
| first_indexed | 2025-11-14T06:22:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-8697 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:22:03Z |
| publishDate | 2013 |
| publisher | Elsevier BV * North-Holland |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-86972019-05-03T05:07:32Z A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells Ai, Na Chen, Kongfa Jiang, San Ping Impregnation Solid oxide fuel cells Platinum electrode Catalytic effect Nanoparticles Gadolinium doped ceria A thin Pt skeleton with a well-defined porous structure prepared on Y2O3–ZrO2 (YSZ) substrate is used as template to study the effect of impregnated pure CeO2 and Gd-doped CeO2 (GDC) nanoparticles on the electrochemical activity of Pt electrodes and to minimize possible interactions between the infiltrated phase/solution and the porous skeleton structure. The results show that the activity of Pt cathodes is enhanced by the infiltration of 0.2 mg cm−2 (6.2 wt.%) CeO2 and GDC nanoparticles. For the O2 reduction reaction under open circuit and at low current region the promotion effect of infiltrated CeO2 and GDC nanoparticles is close, but under higher currents the infiltrated GDC exhibits a much higher electrocatalytic activity as compared to the infiltrated CeO2 for the O2 reduction reaction on the Pt electrodes. The high electronic conductivity and high oxygen vacancies of GDC nanoparticles under polarization or dc bias, as compared to that of pure CeO2 are most likely responsible for the high catalytic effect of GDC nanoparticles for the O2 reduction reaction on the Pt. This study demonstrates that the electrochemical performance of infiltrated nano-structured electrodes is fundamentally affected by the catalytic properties of infiltrated nanoparticles. 2013 Journal Article http://hdl.handle.net/20.500.11937/8697 10.1016/j.ssi.2012.12.008 Elsevier BV * North-Holland restricted |
| spellingShingle | Impregnation Solid oxide fuel cells Platinum electrode Catalytic effect Nanoparticles Gadolinium doped ceria Ai, Na Chen, Kongfa Jiang, San Ping A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells |
| title | A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells |
| title_full | A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells |
| title_fullStr | A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells |
| title_full_unstemmed | A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells |
| title_short | A fundamental study of infiltrated CeO2 and (Gd,Ce)O2 nanoparticles on the electrocatalytic activity of Pt cathodes of solid oxide fuel cells |
| title_sort | fundamental study of infiltrated ceo2 and (gd,ce)o2 nanoparticles on the electrocatalytic activity of pt cathodes of solid oxide fuel cells |
| topic | Impregnation Solid oxide fuel cells Platinum electrode Catalytic effect Nanoparticles Gadolinium doped ceria |
| url | http://hdl.handle.net/20.500.11937/8697 |