Biomimetic integrated gas diffusion layer inspired by alveoli for enhanced air-breathing fuel cell performance and stability

Chai, Zhi; Ning, Fandi; Wen, Qinglin; Liu, Pei; He, Can; Li, Wei; Dan, Xiong; Xu, Pengpeng; Liu, Yiyang; Li, Yali; Zhou, Xiaochun

doi:10.1039/d3ta04633h

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta04633h

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Biomimetic integrated gas diffusion layer inspired by alveoli for enhanced air-breathing fuel cell performance and stability

Zhi Chai,

Fandi Ning,

Qinglin Wen

et al.

Abstract: Air-breathing proton exchange membrane fuel cells (air-breathing PEMFCs) have the advantages of portable, simple structure, environmental friendliness, and no noise. However, due to its open cathode structure, the operation environmental...

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2024

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A “Leaf‐Vein” Flow Channel Design for the Improvement of Oxygen Transporting in a Large‐Scale Proton Exchange Membrane Electrolysis Cell

Li,

Liu,

Chen

et al. 2024

Energy Tech

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In a proton exchange membrane electrolysis cell (PEMEC), the oxygen generated on the anode side diffuses into the flow channel and forms a gas–liquid two‐phase flow with liquid water. In order to increase the production of hydrogen, larger sized PEMEC would be favorable other than series connection of smaller ones, which can save cost, though the corresponding flow channel design is lacked. Herein, a “leaf‐vein” bionic flow channel for large‐scale PEMEC (the activation area is 1350 cm2) is proposed. A 3D mixture and steady model of the PEMEC is developed to characterize the two‐phase flow in the flow field. Detailed analyses of geometric parameters are conducted through orthogonal test to determine the optimal channel geometry. The numerical results show that the optimized design of PEMEC increases medium and low oxygen gas content, and reduces pressure drop compared to traditional flow channels. An interdigitated leaf‐vein flow field is applied, which effectively alleviates gas blockage problems. This article will provide a theoretical basis for large‐scale PEMEC manufacturing.

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A “Leaf‐Vein” Flow Channel Design for the Improvement of Oxygen Transporting in a Large‐Scale Proton Exchange Membrane Electrolysis Cell

Li,

Liu,

Chen

et al. 2024

Energy Tech

View full text Add to dashboard Cite

show abstract

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Biomimetic integrated gas diffusion layer inspired by alveoli for enhanced air-breathing fuel cell performance and stability

Abstract: Air-breathing proton exchange membrane fuel cells (air-breathing PEMFCs) have the advantages of portable, simple structure, environmental friendliness, and no noise. However, due to its open cathode structure, the operation environmental...

Cited by 1 publication

References 56 publications

A “Leaf‐Vein” Flow Channel Design for the Improvement of Oxygen Transporting in a Large‐Scale Proton Exchange Membrane Electrolysis Cell

A “Leaf‐Vein” Flow Channel Design for the Improvement of Oxygen Transporting in a Large‐Scale Proton Exchange Membrane Electrolysis Cell

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