A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel Cell
A membrane electrode assembly (MEA) with a novel trilaminar-catalytic layered structure was designed and fabricated for a micro-direct methanol fuel cell (μ-DMFC). The trilaminar-catalytic layer comprises three porous layers. The medial layer has a lower porosity than the inner and outer layers. The...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/12/4/381 |
| _version_ | 1827696244027293696 |
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| author | Huichao Deng Jiaxu Zhou Yufeng Zhang |
| author_facet | Huichao Deng Jiaxu Zhou Yufeng Zhang |
| author_sort | Huichao Deng |
| collection | DOAJ |
| description | A membrane electrode assembly (MEA) with a novel trilaminar-catalytic layered structure was designed and fabricated for a micro-direct methanol fuel cell (μ-DMFC). The trilaminar-catalytic layer comprises three porous layers. The medial layer has a lower porosity than the inner and outer layers. The simulation results predicted a lower water content and a higher oxygen concentration in the trilaminar-catalytic layer. The novel trilaminar-catalytic layer enhanced the back diffusion of water from the cathode to the anode, which reduces methanol crossover and improves oxygen mass transportation. The electrochemical results of the half-cell test indicate that the novel MEA has a greatly increased cathode polarization and a slightly increased anode polarization. Thus, this novel μ-DMFC structure has a higher power density and a longer discharging time, and hence may be used in portable systems. |
| first_indexed | 2024-03-10T12:43:02Z |
| format | Article |
| id | doaj.art-e86cdf4d07e5442580e47b714dec3c03 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T12:43:02Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-e86cdf4d07e5442580e47b714dec3c032023-11-21T13:47:18ZengMDPI AGMicromachines2072-666X2021-04-0112438110.3390/mi12040381A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel CellHuichao Deng0Jiaxu Zhou1Yufeng Zhang2School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, ChinaSchool of Mechanical Engineering and Automation, Beihang University, Beijing 100191, ChinaMEMS Center, Harbin Institute of Technology, Harbin 150001, ChinaA membrane electrode assembly (MEA) with a novel trilaminar-catalytic layered structure was designed and fabricated for a micro-direct methanol fuel cell (μ-DMFC). The trilaminar-catalytic layer comprises three porous layers. The medial layer has a lower porosity than the inner and outer layers. The simulation results predicted a lower water content and a higher oxygen concentration in the trilaminar-catalytic layer. The novel trilaminar-catalytic layer enhanced the back diffusion of water from the cathode to the anode, which reduces methanol crossover and improves oxygen mass transportation. The electrochemical results of the half-cell test indicate that the novel MEA has a greatly increased cathode polarization and a slightly increased anode polarization. Thus, this novel μ-DMFC structure has a higher power density and a longer discharging time, and hence may be used in portable systems.https://www.mdpi.com/2072-666X/12/4/381micro-direct methanol fuel celltrilaminar-catalyticwater managementmethanol crossover |
| spellingShingle | Huichao Deng Jiaxu Zhou Yufeng Zhang A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel Cell Micromachines micro-direct methanol fuel cell trilaminar-catalytic water management methanol crossover |
| title | A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel Cell |
| title_full | A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel Cell |
| title_fullStr | A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel Cell |
| title_full_unstemmed | A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel Cell |
| title_short | A Trilaminar-Catalytic Layered MEA Structure for a Passive Micro-Direct Methanol Fuel Cell |
| title_sort | trilaminar catalytic layered mea structure for a passive micro direct methanol fuel cell |
| topic | micro-direct methanol fuel cell trilaminar-catalytic water management methanol crossover |
| url | https://www.mdpi.com/2072-666X/12/4/381 |
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