Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell
Summary: Hydrogen crossover rate is an important indicator for characterizing the membrane degradation and failure in proton exchange membrane fuel cell. Several electrochemical methods have been applied to quantify it. But most of established methods are too rough to support follow-up applications....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004221015467 |
| _version_ | 1798024745611952128 |
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| author | Sida Li Xuezhe Wei Haifeng Dai Hao Yuan Pingwen Ming |
| author_facet | Sida Li Xuezhe Wei Haifeng Dai Hao Yuan Pingwen Ming |
| author_sort | Sida Li |
| collection | DOAJ |
| description | Summary: Hydrogen crossover rate is an important indicator for characterizing the membrane degradation and failure in proton exchange membrane fuel cell. Several electrochemical methods have been applied to quantify it. But most of established methods are too rough to support follow-up applications. In this paper, a systematic and consistent theoretical foundation for electrochemical measurements of hydrogen crossover is established for the first time. Different electrochemical processes occurring throughout the courses of applying potentiostatic or galvanostatic excitations on fuel cell are clarified, and the linear current-voltage behavior observed in the steady-state voltammogram is reinterpreted. On this basis, we propose a modified galvanostatic charging method with high practicality to achieve accurate electrochemical measurement of hydrogen crossover, and the validity of this method is fully verified. This research provides an explicit framework for implementation of galvanostatic charging method and offers deeper insights into the principles of electrochemical methods for measuring hydrogen crossover. |
| first_indexed | 2024-04-11T18:07:36Z |
| format | Article |
| id | doaj.art-71e696955a874be6802ebf167c322365 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-04-11T18:07:36Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-71e696955a874be6802ebf167c3223652022-12-22T04:10:17ZengElsevieriScience2589-00422022-01-01251103576Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cellSida Li0Xuezhe Wei1Haifeng Dai2Hao Yuan3Pingwen Ming4School of Automotive Studies, Tongji University, Shanghai, China; Clean Energy Automotive Engineering Center, Tongji University, Shanghai, ChinaSchool of Automotive Studies, Tongji University, Shanghai, China; Clean Energy Automotive Engineering Center, Tongji University, Shanghai, China; Corresponding authorSchool of Automotive Studies, Tongji University, Shanghai, China; Clean Energy Automotive Engineering Center, Tongji University, Shanghai, China; Corresponding authorSchool of Automotive Studies, Tongji University, Shanghai, China; Clean Energy Automotive Engineering Center, Tongji University, Shanghai, ChinaSchool of Automotive Studies, Tongji University, Shanghai, China; Clean Energy Automotive Engineering Center, Tongji University, Shanghai, ChinaSummary: Hydrogen crossover rate is an important indicator for characterizing the membrane degradation and failure in proton exchange membrane fuel cell. Several electrochemical methods have been applied to quantify it. But most of established methods are too rough to support follow-up applications. In this paper, a systematic and consistent theoretical foundation for electrochemical measurements of hydrogen crossover is established for the first time. Different electrochemical processes occurring throughout the courses of applying potentiostatic or galvanostatic excitations on fuel cell are clarified, and the linear current-voltage behavior observed in the steady-state voltammogram is reinterpreted. On this basis, we propose a modified galvanostatic charging method with high practicality to achieve accurate electrochemical measurement of hydrogen crossover, and the validity of this method is fully verified. This research provides an explicit framework for implementation of galvanostatic charging method and offers deeper insights into the principles of electrochemical methods for measuring hydrogen crossover.http://www.sciencedirect.com/science/article/pii/S2589004221015467CatalysisElectrochemical energy productionEnergy systemsEnergy materials |
| spellingShingle | Sida Li Xuezhe Wei Haifeng Dai Hao Yuan Pingwen Ming Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell iScience Catalysis Electrochemical energy production Energy systems Energy materials |
| title | Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell |
| title_full | Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell |
| title_fullStr | Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell |
| title_full_unstemmed | Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell |
| title_short | Voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell |
| title_sort | voltammetric and galvanostatic methods for measuring hydrogen crossover in fuel cell |
| topic | Catalysis Electrochemical energy production Energy systems Energy materials |
| url | http://www.sciencedirect.com/science/article/pii/S2589004221015467 |
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