Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC

Zhang, Yu; Zhang, Huamin; Zhu, Xiaobing; Liu, Gang; Bi, Cheng; Liang, Yong‐Min

doi:10.1016/j.jpowsour.2006.12.060

Cited by 39 publications

(20 citation statements)

References 24 publications

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“…For Nafion reinforced with dispersed CNT the dimensional change can decrease to 12.4 per cent [165] and for PTFE-reinforced Nafion this can decrease to 10 per cent [167]. At 90 per cent RH, expanded PTFE reinforcement can suppress inplane dimensional change from 12 per cent down to 2.5 per cent [169].…”

Section: Anisotropic Expansionmentioning

confidence: 98%

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A review of performance degradation and failure modes for hydrogen-fuelled polymer electrolyte fuel cells

Rama

Chen

Andrews

2008

Proceedings of the Institution of Mechanical Engineers, Part A:

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DOI: 10.1243/09576509JPE603Abstract: A qualitative account of the causes and effects of performance degradation and failure in hydrogen-fuelled polymer electrolyte fuel cells (PEFCs) is given in the present review. The purpose of the review is to establish a backbone understanding of the phenomenological processes that occur within the PEFC, how they interact, how they are influenced through elements of design, manufacturing and operation, and ultimately how they result in performance degradation and cell failure. In the current work, 22 common faults are identified which are induced by 48 frequent causes. The major PEFC components considered here that are susceptible to faults are the polymer electrolyte-based membrane, the anode and cathode catalyst layers, gas diffusion and microporous layers, seals and the bipolar plate. Faults pertaining to these components can cause irreversible increases in activation, mass transportation, ohmic and fuel efficiency losses, or indeed cause catastrophic cell failure.

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Section: Anisotropic Expansionmentioning

confidence: 98%

“…• C is 25 per cent [167]. For Nafion reinforced with dispersed CNT the dimensional change can decrease to 12.4 per cent [165] and for PTFE-reinforced Nafion this can decrease to 10 per cent [167].…”

Section: Anisotropic Expansionmentioning

confidence: 98%

A review of performance degradation and failure modes for hydrogen-fuelled polymer electrolyte fuel cells

Rama

Chen

Andrews

2008

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…[48,49] The obtained membrane exhibited good durability even without any exterior humidification ( Figure 4). This concept simplified the operation of PEMFCs by artfully utilizing gas crossover.…”

Section: Introductionmentioning

confidence: 95%

Durability of Sulfonated Aromatic Polymers for Proton‐Exchange‐Membrane Fuel Cells

2011

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As a key component of proton-exchange-membrane fuel cells (PEMFCs), proton-exchange membranes (PEMs) must continuously withstand very harsh environments during long-term fuel cell operations. With the coming commercialization of PEMFCs, investigations into the durability and degradation of PEMs are becoming more and more urgent and interesting. Herein, various recent attempts and achievements to improve the durability of sulfonated aromatic polymers (SAPs) are reviewed and some further developments are predicted. Extensive investigations into inexpensive SAPs as alternative electrolyte membranes include modification of available polymer materials; design, synthesis, and optimization of new macromolecules; durability testing; and exploring the degradation mechanisms.

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“…Many research groups have investigated organic-inorganic hybrid materials, where functional groups were covalently/physically attached to the organic part of the hybrid, including Nafion and hydrocarbon membranes. The functional inorganic additives make it possible to: (i) prevent membrane (anode side) dry out; that is, so-called self-humidifying [126][127][128]; (ii) improve the mechanical strength and dimensional stability [129,130]; (iii) enhance the pathways of proton conduction [131][132][133][134]; and (iv) suppress methanol permeation [135][136][137][138][139].…”

Section: Hybrid Organic-inorganic Membranesmentioning

confidence: 99%

Polymer and Hybrid Materials: Electrochemistry and Applications

Xing

2009

Solid State Electrochemistry I

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Due to substantial practical interest in proton-exchange membrane fuel cells (PEMFCs) during the past few decades, significant improvements have been achieved in polymer and hybrid materials. Much of the research effort has centered on the development of composite membranes and new proton-conducting materials, aimed to improving their performance, durability, and cost. Attention has also been focused on new membranes operating under high-temperature/low-humidity conditions. This chapter presents a brief review on the motivation for novel proton-exchange membrane developments, together with details of recent progress and technology gaps.

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Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC

Cited by 39 publications

References 24 publications

A review of performance degradation and failure modes for hydrogen-fuelled polymer electrolyte fuel cells

A review of performance degradation and failure modes for hydrogen-fuelled polymer electrolyte fuel cells

Durability of Sulfonated Aromatic Polymers for Proton‐Exchange‐Membrane Fuel Cells

Polymer and Hybrid Materials: Electrochemistry and Applications

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