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Structure optimization of cathode microporous layer for direct methanol fuel cells

Author

Listed:
  • Liu, Guicheng
  • Ding, Xianan
  • Zhou, Hongwei
  • Chen, Ming
  • Wang, Manxiang
  • Zhao, Zhenxuan
  • Yin, Zhuang
  • Wang, Xindong

Abstract

To obtain the cathode microporous layer (CML) with high mass transfer performance and high electronic conductivity, a pore-forming technology was introduced to optimize CML microstructure for direct methanol fuel cells. In this paper, the effects of carbon material type, carbon material loading and pore-forming agent loading in CML on fuel cell performance were discussed systematically. The results indicated that the optimized CML consisted of carbon nanotubes and ammonium oxalate with the loading of 1.5 and 3.5mgcm−2 respectively. The fuel cell performance was improved by 30.3%, from 224 to 292mWcm−2 at 80°C under 0.3MPa O2. Carbon nanotube was found to be the most suitable carbon material for the CML due to its great specific surface area and small particle size, resulting in increasing the number of the hydrophobic sites and the contact area between the support and the catalyst layer. The carbon material and pore-forming agent loading directly influenced the pore distribution and the contact resistance of membrane electrode assembly. The water removal capacity and the gas mass transfer property of diffusion layer were improved by optimizing the amount of micropore and macropore structures.

Suggested Citation

  • Liu, Guicheng & Ding, Xianan & Zhou, Hongwei & Chen, Ming & Wang, Manxiang & Zhao, Zhenxuan & Yin, Zhuang & Wang, Xindong, 2015. "Structure optimization of cathode microporous layer for direct methanol fuel cells," Applied Energy, Elsevier, vol. 147(C), pages 396-401.
    • Handle: RePEc:eee:appene:v:147:y:2015:i:c:p:396-401
    DOI: 10.1016/j.apenergy.2015.03.021
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    References listed on IDEAS

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    1. Yuan, Wei & Tang, Yong & Yang, Xiaojun & Wan, Zhenping, 2012. "Porous metal materials for polymer electrolyte membrane fuel cells – A review," Applied Energy, Elsevier, vol. 94(C), pages 309-329.
    2. Karim, N.A. & Kamarudin, S.K., 2013. "An overview on non-platinum cathode catalysts for direct methanol fuel cell," Applied Energy, Elsevier, vol. 103(C), pages 212-220.
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    Cited by:

    1. Liu, Guicheng & Li, Xinyang & Wang, Hui & Liu, Xiuying & Chen, Ming & Woo, Jae Young & Kim, Ji Young & Wang, Xindong & Lee, Joong Kee, 2017. "Design of 3-electrode system for in situ monitoring direct methanol fuel cells during long-time running test at high temperature," Applied Energy, Elsevier, vol. 197(C), pages 163-168.
    2. Calabriso, Andrea & Borello, Domenico & Romano, Giovanni Paolo & Cedola, Luca & Del Zotto, Luca & Santori, Simone Giovanni, 2017. "Bubbly flow mapping in the anode channel of a direct methanol fuel cell via PIV investigation," Applied Energy, Elsevier, vol. 185(P2), pages 1245-1255.
    3. Li, Yang & Zhang, Xuelin & Yuan, Weijian & Zhang, Yufeng & Liu, Xiaowei, 2018. "A novel CO2 gas removal design for a micro passive direct methanol fuel cell," Energy, Elsevier, vol. 157(C), pages 599-607.
    4. Lin, Rui & Wang, Hong & Zhu, Yu, 2021. "Optimizing the structural design of cathode catalyst layer for PEM fuel cells for improving mass-specific power density," Energy, Elsevier, vol. 221(C).
    5. Li, Jing & Xu, Guoxiao & Luo, Xingying & Xiong, Jie & Liu, Zhao & Cai, Weiwei, 2018. "Effect of nano-size of functionalized silica on overall performance of swelling-filling modified Nafion membrane for direct methanol fuel cell application," Applied Energy, Elsevier, vol. 213(C), pages 408-414.
    6. Deng, Hao & Wang, Dawei & Wang, Renfang & Xie, Xu & Yin, Yan & Du, Qing & Jiao, Kui, 2016. "Effect of electrode design and operating condition on performance of hydrogen alkaline membrane fuel cell," Applied Energy, Elsevier, vol. 183(C), pages 1272-1278.
    7. Abdelkareem, Mohammad Ali & Allagui, Anis & Sayed, Enas Taha & El Haj Assad, M. & Said, Zafar & Elsaid, Khaled, 2019. "Comparative analysis of liquid versus vapor-feed passive direct methanol fuel cells," Renewable Energy, Elsevier, vol. 131(C), pages 563-584.

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