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The effect of gravity on inner transport and cell performance in passive micro direct methanol fuel cell

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  • Yuan, Zhenyu
  • Zhang, Manna
  • Zuo, Kaiyuan
  • Ren, Yongqiang

Abstract

In this paper, the effects of non-isothermal and gravity on inner methanol concentration and thermal distribution of passive micro direct methanol fuel cell (μDMFC) are taken into account to improve the cell performance. A whole two-dimensional model coupled with the mass transfer, the momentum transfer and the heat transfer is established. Simulation results show that both more uniform reactant concentration and higher in reaction temperature are obtained with the gravity effect. Furthermore, a passive μDMFC with the active area of 1.0 cm2 is designed and fabricated. The detailed experimental validation is conducted to evaluate the inner transport characteristic as well as the corresponding cell performance. Experimental results reveal that when the cell is supplied within a certain concentration range, both the peak power density of cell and cell energy capacity with gravity positive effect is much higher than that without gravity effect. In addition, the anode CO2 emission and cathode water-flooding of the passive μDMFC are analyzed, and the experimental results are in good agreement with the simulation.

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  • Yuan, Zhenyu & Zhang, Manna & Zuo, Kaiyuan & Ren, Yongqiang, 2018. "The effect of gravity on inner transport and cell performance in passive micro direct methanol fuel cell," Energy, Elsevier, vol. 150(C), pages 28-37.
    • Handle: RePEc:eee:energy:v:150:y:2018:i:c:p:28-37
    DOI: 10.1016/j.energy.2018.02.132
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    Cited by:

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    2. Prapainainar, Paweena & Du, Zehui & Theampetch, Apichaya & Prapainainar, Chaiwat & Kongkachuichay, Paisan & Holmes, Stuart M., 2020. "Properties and DMFC performance of nafion/mordenite composite membrane fabricated by solution-casting method with different solvent ratio," Energy, Elsevier, vol. 190(C).
    3. Fang, Shuo & Song, Nan & Liu, Yuntao & Zhou, Chaoyang & Zhao, Chunhui & Wang, Yun, 2023. "Oscillator design for high efficiency DC-DC of micro direct methanol fuel cell," Energy, Elsevier, vol. 284(C).
    4. Liu, Shihua & Li, Xiaoyang & Pang, Linjia & Geng, Tie & Guo, Yonggang & Jiang, Lin & Kang, Kejia & Wang, Xinchao & Liu, Zongyao, 2022. "Study on the effect of purging time on the performance of PEMFC with dead-ended anode under gravity," Renewable Energy, Elsevier, vol. 200(C), pages 1141-1151.
    5. Maria H. de Sá & Alexandra M. F. R. Pinto & Vânia B. Oliveira, 2022. "Passive Small Direct Alcohol Fuel Cells for Low-Power Portable Applications: Assessment Based on Innovative Increments since 2018," Energies, MDPI, vol. 15(10), pages 1-48, May.
    6. Abdelkareem, Mohammad Ali & Sayed, Enas Taha & Nakagawa, Nobuyoshi, 2020. "Significance of diffusion layers on the performance of liquid and vapor feed passive direct methanol fuel cells," Energy, Elsevier, vol. 209(C).
    7. Fang, Shuo & Liu, Yuntao & Zhao, Chunhui & Huang, Lilian & Zhong, Zhi & Wang, Yun, 2021. "Polarization analysis of a micro direct methanol fuel cell stack based on Debye-Hückel ionic atmosphere theory," Energy, Elsevier, vol. 222(C).
    8. Yang, Chii-Rong & Lu, Chang-Wei & Fu, Pin-Chi & Cheng, Chia & Chiou, Yuang-Cherng & Lee, Rong-Tsong & Tseng, Shih-Feng, 2020. "Performance evaluation of μDMFCs based on porous-silicon electrodes and methanol modification," Energy, Elsevier, vol. 192(C).
    9. Kotowicz, Janusz & Węcel, Daniel & Brzęczek, Mateusz, 2021. "Analysis of the work of a “renewable” methanol production installation based ON H2 from electrolysis and CO2 from power plants," Energy, Elsevier, vol. 221(C).

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