A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell
Abstract Durability and reliability are the key factors that prevent fuel cells from successful implementation in automotive sector. Dynamic load change is a common and frequent condition that the fuel cell has to undergo in automotive applications. Fuel cells are more sensitive to changes in load c...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-12-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-25037-0 |
| _version_ | 1797977466244956160 |
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| author | Mathan Chandran Karthikeyan Palaniswamy N. B. Karthik Babu Oisik Das |
| author_facet | Mathan Chandran Karthikeyan Palaniswamy N. B. Karthik Babu Oisik Das |
| author_sort | Mathan Chandran |
| collection | DOAJ |
| description | Abstract Durability and reliability are the key factors that prevent fuel cells from successful implementation in automotive sector. Dynamic load change is a common and frequent condition that the fuel cell has to undergo in automotive applications. Fuel cells are more sensitive to changes in load conditions and degrade based on load variation representing idling, rated power, and high power operating conditions. To examine the influence of dynamic load step on the fuel cell performance, two similar cells of active 25 cm2 was tested under two different load step for the same dynamic load cycle. The main difference in dynamic load cycle 2 was the ramp rate which was fixed as 0.1, 0.3, and 0.25 A/cm2/s for 0.2, 0.6, and 1.0 A/cm2 respectively. To investigate the degradative effects, polarization curves, electrochemical impedance spectroscopy, and field emission scanning electron microscopy were used. The results indicated that the degradation rate increased in both dynamic load cycles but however the impact of load change was comparatively minimal in dynamic load cycle 2. The total degradation in performance was 20.67% and 10.72% in dynamic load cycles 1 and 2 respectively. Fuel cell performance degraded in a manner that was consistent with the electrochemical impedance spectroscopy and cross-sectional analysis of field emission scanning electron microscopy. The results prove that the degradation rate is dependent on the load step and the number of load cycles. Severe catalyst degradation and delamination were observed in fuel cells operated under dynamic load cycle 1. |
| first_indexed | 2024-04-11T05:07:21Z |
| format | Article |
| id | doaj.art-517ff57aeaae46748e25118d7a113e0a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T05:07:21Z |
| publishDate | 2022-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-517ff57aeaae46748e25118d7a113e0a2022-12-25T12:14:09ZengNature PortfolioScientific Reports2045-23222022-12-0112111010.1038/s41598-022-25037-0A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cellMathan Chandran0Karthikeyan Palaniswamy1N. B. Karthik Babu2Oisik Das3Fuel Cell Energy System Lab, Department of Automobile Engineering, PSG College of TechnologyDepartment of Automobile Engineering, PSG College of TechnologyDepartment of Mechanical Engineering, Assam Energy Institute, Centre of Rajiv Gandhi Institute of Petroleum TechnologyStructural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of TechnologyAbstract Durability and reliability are the key factors that prevent fuel cells from successful implementation in automotive sector. Dynamic load change is a common and frequent condition that the fuel cell has to undergo in automotive applications. Fuel cells are more sensitive to changes in load conditions and degrade based on load variation representing idling, rated power, and high power operating conditions. To examine the influence of dynamic load step on the fuel cell performance, two similar cells of active 25 cm2 was tested under two different load step for the same dynamic load cycle. The main difference in dynamic load cycle 2 was the ramp rate which was fixed as 0.1, 0.3, and 0.25 A/cm2/s for 0.2, 0.6, and 1.0 A/cm2 respectively. To investigate the degradative effects, polarization curves, electrochemical impedance spectroscopy, and field emission scanning electron microscopy were used. The results indicated that the degradation rate increased in both dynamic load cycles but however the impact of load change was comparatively minimal in dynamic load cycle 2. The total degradation in performance was 20.67% and 10.72% in dynamic load cycles 1 and 2 respectively. Fuel cell performance degraded in a manner that was consistent with the electrochemical impedance spectroscopy and cross-sectional analysis of field emission scanning electron microscopy. The results prove that the degradation rate is dependent on the load step and the number of load cycles. Severe catalyst degradation and delamination were observed in fuel cells operated under dynamic load cycle 1.https://doi.org/10.1038/s41598-022-25037-0 |
| spellingShingle | Mathan Chandran Karthikeyan Palaniswamy N. B. Karthik Babu Oisik Das A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell Scientific Reports |
| title | A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell |
| title_full | A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell |
| title_fullStr | A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell |
| title_full_unstemmed | A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell |
| title_short | A study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell |
| title_sort | study of the influence of current ramp rate on the performance of polymer electrolyte membrane fuel cell |
| url | https://doi.org/10.1038/s41598-022-25037-0 |
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