High-performance Fuel Cell with Stretched Catalyst-Coated Membrane: One-step Formation of Cracked Electrode.
Sang Moon Kim,Chi-Yeong Ahn,Yong-Hun Cho,Sungjun Kim,Wonchan Hwang,Segeun Jang,Sung Soo Shin,Gunhee Lee,Yung-Eun Sung,Mansoo Choi +9 more
TLDR
This is the first attempt to enhance the performance of PEMFC by using cracks which are generally considered as defects, and mechanical stretching of catalyst-coated Nafion membrane led to a decrease in membrane resistance and an improvement in mass transport, which resulted in enhanced device performance.Abstract:
We have achieved performance enhancement of polymer electrolyte membrane fuel cell (PEMFC) though crack generation on its electrodes. It is the first attempt to enhance the performance of PEMFC by using cracks which are generally considered as defects. The pre-defined, cracked electrode was generated by stretching a catalyst-coated Nafion membrane. With the strain-stress property of the membrane that is unique in the aspect of plastic deformation, membrane electrolyte assembly (MEA) was successfully incorporated into the fuel cell. Cracked electrodes with the variation of strain were investigated and electrochemically evaluated. Remarkably, mechanical stretching of catalyst-coated Nafion membrane led to a decrease in membrane resistance and an improvement in mass transport, which resulted in enhanced device performance.read more
Citations
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Journal ArticleDOI
Tailoring the Membrane‐Electrode Interface in PEM Fuel Cells: A Review and Perspective on Novel Engineering Approaches
TL;DR: In this article, a quantitative comparison of relative improvements due to a micro-and nano-engineered PEM|CL interface is provided, and the results show that an engineered PEMCL interface can contribute to extend the fuel cell durability due to enhanced adhesion and contact between the two layers.
Journal ArticleDOI
Investigation of Hot Pressed Polymer Electrolyte Fuel Cell Assemblies via X-ray Computed Tomography
Quentin Meyer,Noramalina Mansor,Francesco Iacoviello,Patrick L. Cullen,Rhodri Jervis,Donal P. Finegan,Chun Tan,Josh J. Bailey,Paul R. Shearing,Dan J. L. Brett +9 more
TL;DR: In this paper, a novel approach is used, which combines characterisation of hot-pressed membrane electrode assemblies using X-ray computed tomography, thermogravimetric analysis, differential scanning calorimetry and atomic force microscopy, with electrochemical performance measurements from polarisation curves and high-frequency impedance spectroscopy.
Journal ArticleDOI
Engineering Catalyst Layers for Next-Generation Polymer Electrolyte Fuel Cells: A Review of Design, Materials, and Methods
Theo M. Suter,Keenan Smith,Jennifer Hack,Lara Rasha,Zahra Rana,Gyen Ming A. Angel,Paul R. Shearing,Thomas S. Miller,Dan J. L. Brett +8 more
Journal ArticleDOI
Controlling cracking formation in fuel cell catalyst layers
TL;DR: In this article, a critical crack thickness (CCT) is examined as a parameter for cracking characteristics by changing the formation of Pt/carbon by the presence or absence of an absorbed ionomer on Pt/Carbon particles.
References
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A review of water flooding issues in the proton exchange membrane fuel cell
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