Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas Recirculation
Fuel gas utilization and water management are particularly challenging integrated engineering problems in hydrogen–oxygen proton exchange membrane fuel cell (H2/O2 PEMFC) systems. Herein, a standardized process is adopted to evaluate the performance and investigate the degradation mechanisms of a PE...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2023-07-01
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| Series: | Advanced Energy & Sustainability Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aesr.202200180 |
| _version_ | 1827904494404370432 |
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| author | Yang Liu Zhengkai Tu Siew Hwa Chan |
| author_facet | Yang Liu Zhengkai Tu Siew Hwa Chan |
| author_sort | Yang Liu |
| collection | DOAJ |
| description | Fuel gas utilization and water management are particularly challenging integrated engineering problems in hydrogen–oxygen proton exchange membrane fuel cell (H2/O2 PEMFC) systems. Herein, a standardized process is adopted to evaluate the performance and investigate the degradation mechanisms of a PEMFC with dual exhaust gas recirculation. The purpose of incorporating recirculation subsystems in the fuel cell is to achieve a high fuel gas utilization rate and realize effective water management inside the stack, which consists of 3D‐printed ejectors and a customized recirculation pump. Evaluation of the electrochemical performance degradation and morphological characterization of the fuel cells under different operating strategies are performed after 50 h durability experiments. At a current density of 400 mA cm−2, the performance degradation rates of the stack decrease from 16.50% to 7.49% and 0.71% in the ejector and recirculation pump operation strategies, respectively. The results show that using exhaust gas recirculation devices (ejector/pump) in the fuel cell stack can help in effectively mitigating water flooding and chemical degradation of the membrane electrode assembly. The findings of the study provide a perspective on the exhaust gas recirculation behavior and contribute to the engineering application of H2/O2 PEMFCs. |
| first_indexed | 2024-03-13T00:28:15Z |
| format | Article |
| id | doaj.art-978d50a485a34ec594d61f21c6484aaa |
| institution | Directory Open Access Journal |
| issn | 2699-9412 |
| language | English |
| last_indexed | 2024-03-13T00:28:15Z |
| publishDate | 2023-07-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Energy & Sustainability Research |
| spelling | doaj.art-978d50a485a34ec594d61f21c6484aaa2023-07-11T03:18:37ZengWiley-VCHAdvanced Energy & Sustainability Research2699-94122023-07-0147n/an/a10.1002/aesr.202200180Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas RecirculationYang Liu0Zhengkai Tu1Siew Hwa Chan2School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 ChinaSchool of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 ChinaEnergy Research Institute Nanyang Technological University 50 Nanyang Avenue Singapore 637553 SingaporeFuel gas utilization and water management are particularly challenging integrated engineering problems in hydrogen–oxygen proton exchange membrane fuel cell (H2/O2 PEMFC) systems. Herein, a standardized process is adopted to evaluate the performance and investigate the degradation mechanisms of a PEMFC with dual exhaust gas recirculation. The purpose of incorporating recirculation subsystems in the fuel cell is to achieve a high fuel gas utilization rate and realize effective water management inside the stack, which consists of 3D‐printed ejectors and a customized recirculation pump. Evaluation of the electrochemical performance degradation and morphological characterization of the fuel cells under different operating strategies are performed after 50 h durability experiments. At a current density of 400 mA cm−2, the performance degradation rates of the stack decrease from 16.50% to 7.49% and 0.71% in the ejector and recirculation pump operation strategies, respectively. The results show that using exhaust gas recirculation devices (ejector/pump) in the fuel cell stack can help in effectively mitigating water flooding and chemical degradation of the membrane electrode assembly. The findings of the study provide a perspective on the exhaust gas recirculation behavior and contribute to the engineering application of H2/O2 PEMFCs.https://doi.org/10.1002/aesr.2022001803D-printed ejectorsdegradation mechanismsdual recirculationdurabilityproton exchange membrane fuel cellsPt migration |
| spellingShingle | Yang Liu Zhengkai Tu Siew Hwa Chan Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas Recirculation Advanced Energy & Sustainability Research 3D-printed ejectors degradation mechanisms dual recirculation durability proton exchange membrane fuel cells Pt migration |
| title | Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas Recirculation |
| title_full | Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas Recirculation |
| title_fullStr | Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas Recirculation |
| title_full_unstemmed | Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas Recirculation |
| title_short | Performance Evaluation and Degradation Mechanism for Proton Exchange Membrane Fuel Cell with Dual Exhaust Gas Recirculation |
| title_sort | performance evaluation and degradation mechanism for proton exchange membrane fuel cell with dual exhaust gas recirculation |
| topic | 3D-printed ejectors degradation mechanisms dual recirculation durability proton exchange membrane fuel cells Pt migration |
| url | https://doi.org/10.1002/aesr.202200180 |
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