Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell
An anode-supported honeycomb SOFC gives high volumetric power density and improves thermo-mechanical durability at high temperatures. We have so far fabricated and tested a honeycomb cell with a cathode layer of LSM and an electrolyte layer of 8YSZ on a porous anode honeycomb substrate of Ni/8YSZ. T...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2018-02-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/84/859/84_17-00419/_pdf/-char/en |
| _version_ | 1828099331897425920 |
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| author | Hironori NAKAJIMA Shunzaburo MURAKAMI Tatsumi KITAHARA |
| author_facet | Hironori NAKAJIMA Shunzaburo MURAKAMI Tatsumi KITAHARA |
| author_sort | Hironori NAKAJIMA |
| collection | DOAJ |
| description | An anode-supported honeycomb SOFC gives high volumetric power density and improves thermo-mechanical durability at high temperatures. We have so far fabricated and tested a honeycomb cell with a cathode layer of LSM and an electrolyte layer of 8YSZ on a porous anode honeycomb substrate of Ni/8YSZ. The anode-supported honeycomb cell exhibited promising volumetric power densities. In the present study, current-voltage and current-volumetric power density characteristics of the cells having different flow channel arrangements of the anode and cathode are measured under various inlet hydrogen fuel flow rates to show the effect of three-dimensional transport and distribution of the fuel in the porous anode substrate on the cell performance. We measure ohmic resistances of the honeycomb cells by current interruption method, and indicate the impact of nickel catalyst re-oxidation in the anode substrate by the fuel depletion with the flow channel arrangements resulting in high ohmic resistances and deactivation of the nickel catalyst. In low inlet fuel flow rate, smaller number of the anode flow channel is thereby advantageous, while larger number of the anode flow channel is advantageous in high inlet fuel flow rate. We also discuss suitable flow channel arrangements depending on inlet fuel flow rate to choose an appropriate operation mode. |
| first_indexed | 2024-04-11T08:15:32Z |
| format | Article |
| id | doaj.art-0e5b850a909e42fdabec1a129634c9f0 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:15:32Z |
| publishDate | 2018-02-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-0e5b850a909e42fdabec1a129634c9f02022-12-22T04:35:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612018-02-018485917-0041917-0041910.1299/transjsme.17-00419transjsmeEffect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cellHironori NAKAJIMA0Shunzaburo MURAKAMI1Tatsumi KITAHARA2Department of Mechanical Engineering, Faculty of Engineering, Kyushu UniversityDepartment of Hydrogen Energy Systems, Graduate School of Engineering, Kyushu UniversityDepartment of Mechanical Engineering, Faculty of Engineering, Kyushu UniversityAn anode-supported honeycomb SOFC gives high volumetric power density and improves thermo-mechanical durability at high temperatures. We have so far fabricated and tested a honeycomb cell with a cathode layer of LSM and an electrolyte layer of 8YSZ on a porous anode honeycomb substrate of Ni/8YSZ. The anode-supported honeycomb cell exhibited promising volumetric power densities. In the present study, current-voltage and current-volumetric power density characteristics of the cells having different flow channel arrangements of the anode and cathode are measured under various inlet hydrogen fuel flow rates to show the effect of three-dimensional transport and distribution of the fuel in the porous anode substrate on the cell performance. We measure ohmic resistances of the honeycomb cells by current interruption method, and indicate the impact of nickel catalyst re-oxidation in the anode substrate by the fuel depletion with the flow channel arrangements resulting in high ohmic resistances and deactivation of the nickel catalyst. In low inlet fuel flow rate, smaller number of the anode flow channel is thereby advantageous, while larger number of the anode flow channel is advantageous in high inlet fuel flow rate. We also discuss suitable flow channel arrangements depending on inlet fuel flow rate to choose an appropriate operation mode.https://www.jstage.jst.go.jp/article/transjsme/84/859/84_17-00419/_pdf/-char/ensofchoneycombanode-supportporous substratefuel transportni re-oxidation |
| spellingShingle | Hironori NAKAJIMA Shunzaburo MURAKAMI Tatsumi KITAHARA Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell Nihon Kikai Gakkai ronbunshu sofc honeycomb anode-support porous substrate fuel transport ni re-oxidation |
| title | Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell |
| title_full | Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell |
| title_fullStr | Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell |
| title_full_unstemmed | Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell |
| title_short | Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell |
| title_sort | effect of gas flow channel structure on the performance of an anode supported honeycomb solid oxide fuel cell |
| topic | sofc honeycomb anode-support porous substrate fuel transport ni re-oxidation |
| url | https://www.jstage.jst.go.jp/article/transjsme/84/859/84_17-00419/_pdf/-char/en |
| work_keys_str_mv | AT hironorinakajima effectofgasflowchannelstructureontheperformanceofananodesupportedhoneycombsolidoxidefuelcell AT shunzaburomurakami effectofgasflowchannelstructureontheperformanceofananodesupportedhoneycombsolidoxidefuelcell AT tatsumikitahara effectofgasflowchannelstructureontheperformanceofananodesupportedhoneycombsolidoxidefuelcell |