Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel Cells
Solid oxide fuel cells (SOFCs) are of great importance in terms of reducing operational costs and benefiting from system durability. However, SOFCs exhibit sluggish oxygen reduction reactions (ORRs) at cathodes. To overcome this, extensive research is focused on the development of cathodes with supe...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2024-02-01
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| Series: | Small Structures |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/sstr.202300292 |
| _version_ | 1797321018666123264 |
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| author | Sang Won Lee Ji-Woo Park Young-Wan Ju Tae Ho Shin |
| author_facet | Sang Won Lee Ji-Woo Park Young-Wan Ju Tae Ho Shin |
| author_sort | Sang Won Lee |
| collection | DOAJ |
| description | Solid oxide fuel cells (SOFCs) are of great importance in terms of reducing operational costs and benefiting from system durability. However, SOFCs exhibit sluggish oxygen reduction reactions (ORRs) at cathodes. To overcome this, extensive research is focused on the development of cathodes with superior ORR properties for SOFCs. In this study, a fibrous composite cathode composed of strontium‐doped samarium cobaltate (SSC) and samarium‐doped ceria (SDC) is fabricated via electrospinning. Composite fiber cathodes prepared at specific ratios exhibit ORR properties and oxygen‐ion conductivity, which are attributed to the growth of small SSC particles in the fibrous electrode and nanolattice strain of SSC at the SSC and SDC interface. As such, the enhanced cathode performance contributes to an improvement in the power‐generation characteristics of SOFCs (1.33 W cm−2 at 1073 K using 300 μm thick La(Sr)Ga(Mg)O3 electrolyte). This structural engineering of dual‐phase fiber is a promising design that promotes cathodic ORR performance. |
| first_indexed | 2024-03-08T04:51:27Z |
| format | Article |
| id | doaj.art-3c27e089df6b456fb651fbf7a3640cb9 |
| institution | Directory Open Access Journal |
| issn | 2688-4062 |
| language | English |
| last_indexed | 2024-03-08T04:51:27Z |
| publishDate | 2024-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj.art-3c27e089df6b456fb651fbf7a3640cb92024-02-08T03:06:33ZengWiley-VCHSmall Structures2688-40622024-02-0152n/an/a10.1002/sstr.202300292Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel CellsSang Won Lee0Ji-Woo Park1Young-Wan Ju2Tae Ho Shin3Hydrogen Energy Materials Center Korea Institute of Ceramic Engineering and Technology (KICET) Jinju-Si Gyongsangnam-do 52851 Republic of KoreaDepartment of Chemical Engineering College of Engineering Wonkwang University Iksan-si Jeollabuk-do 54538 Republic of KoreaDepartment of Chemical Engineering College of Engineering Wonkwang University Iksan-si Jeollabuk-do 54538 Republic of KoreaHydrogen Energy Materials Center Korea Institute of Ceramic Engineering and Technology (KICET) Jinju-Si Gyongsangnam-do 52851 Republic of KoreaSolid oxide fuel cells (SOFCs) are of great importance in terms of reducing operational costs and benefiting from system durability. However, SOFCs exhibit sluggish oxygen reduction reactions (ORRs) at cathodes. To overcome this, extensive research is focused on the development of cathodes with superior ORR properties for SOFCs. In this study, a fibrous composite cathode composed of strontium‐doped samarium cobaltate (SSC) and samarium‐doped ceria (SDC) is fabricated via electrospinning. Composite fiber cathodes prepared at specific ratios exhibit ORR properties and oxygen‐ion conductivity, which are attributed to the growth of small SSC particles in the fibrous electrode and nanolattice strain of SSC at the SSC and SDC interface. As such, the enhanced cathode performance contributes to an improvement in the power‐generation characteristics of SOFCs (1.33 W cm−2 at 1073 K using 300 μm thick La(Sr)Ga(Mg)O3 electrolyte). This structural engineering of dual‐phase fiber is a promising design that promotes cathodic ORR performance.https://doi.org/10.1002/sstr.202300292composite electrodesdual phaseselectrospinningoxygen reductionsolid oxide fuel cells |
| spellingShingle | Sang Won Lee Ji-Woo Park Young-Wan Ju Tae Ho Shin Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel Cells Small Structures composite electrodes dual phases electrospinning oxygen reduction solid oxide fuel cells |
| title | Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel Cells |
| title_full | Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel Cells |
| title_fullStr | Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel Cells |
| title_full_unstemmed | Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel Cells |
| title_short | Heterogeneous Composite Fibrous Cathode Undergoing Emphasized Active Oxygen Dissociation for La(Sr)Ga(Mg)O3‐Based High‐Performed Solid Oxide Fuel Cells |
| title_sort | heterogeneous composite fibrous cathode undergoing emphasized active oxygen dissociation for la sr ga mg o3 based high performed solid oxide fuel cells |
| topic | composite electrodes dual phases electrospinning oxygen reduction solid oxide fuel cells |
| url | https://doi.org/10.1002/sstr.202300292 |
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