Journal ArticleDOI
Nafion-based membrane electrode assemblies prepared from catalyst inks containing alcohol/water solvent mixtures
TLDR
In this article, the dependence of both the Nafion ionomer morphology in the catalyst layers and the FC performance of the GDEs on e and the solubility parameter δ of the alcohol (i.e., methanol and isopropyl alcohol)/water dispersion mixture was studied.About:
This article is published in Journal of Power Sources.The article was published on 2013-09-15. It has received 58 citations till now. The article focuses on the topics: Nafion & Dispersion (chemistry).read more
Citations
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Journal ArticleDOI
Rheological Investigation on the Microstructure of Fuel Cell Catalyst Inks
Sunilkumar Khandavalli,Jaehyung Park,Nancy Kariuki,Deborah J. Myers,Jonathan J. Stickel,Katherine E. Hurst,Kenneth C. Neyerlin,Michael Ulsh,Scott A. Mauger +8 more
TL;DR: Observations of the effect of ionomer:carbon ratio and a comparison between carbons of different surface areas provided insights on the microstructure of the catalyst ink corresponding to the optimized I/ C ratio for fuel cell performance reported in the literature.
Journal ArticleDOI
Ink Solvent Dependence of the Ionomer Distribution in the Catalyst Layer of a PEMFC
Journal ArticleDOI
Solvent effect on the Nafion agglomerate morphology in the catalyst layer of the proton exchange membrane fuel cells
TL;DR: In this paper, the influence of the solvents used in the catalyst ink on performance of the proton exchange membrane fuel cells (PEMFCs) was investigated by measuring the polymeric chains in 2.5-wt% Nafion dispersion.
Journal ArticleDOI
Inherent Acidity of Perfluorosulfonic Acid Ionomer Dispersions and Implications for Ink Aggregation.
TL;DR: It is shown that solvent choice affects a dispersion's measured pH, which is found to scale linearly with Nafion loading, and all inks studied demonstrate the same particle size and surface charge trends as a function of pH, thus providing insights into the relative influence of solvent and pH effects on these properties.
Journal ArticleDOI
The Controllable Design of Catalyst Inks to Enhance PEMFC Performance: A Review
Yuqing Guo,Fengwen Pan,Wenmiao Chen,Ding Zhiqiang,Daijun Yang,Bing Li,Pingwen Ming,Cunman Zhang +7 more
TL;DR: In this paper, a review of the recent advances in the formulation, characterization, modeling and deposition of catalyst inks is presented, highlighting recent advancements in catalyst ink materials and discuss corresponding complex interactions.
References
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Journal ArticleDOI
Characterization of High‐Surface‐Area Electrocatalysts Using a Rotating Disk Electrode Configuration
Thomas J. Schmidt,Hubert A. Gasteiger,G. D. Stäb,Peter Urban,Dieter M. Kolb,Rolf Jürgen Behm +5 more
TL;DR: In this article, a method for the characterization of the electrocatalytic properties of highly dispersed electro catalysts in a true rotating disk electrode configuration by attaching the catalyst powder on a glossy carbon electrode via a thin Nafion film is presented.
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Thin-film catalyst layers for polymer electrolyte fuel cell electrodes
TL;DR: In this paper, the Pt/C catalyst layer of polymer electrolyte fuel cell electrodes have been developed that substantially increase the utilization efficiency of the catalyst, and the performance of fuel cells based on the thin film catalyst layers are comparable with those of gas diffusion electrode designs that utilize several times as much platinum, thus the specific catalysts in the new structures are significantly higher.
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High performance direct methanol polymer electrolyte fuel cells
TL;DR: In this article, a decal transfer method was used to apply thin-film catalyst/ionomer composite layers to Nation® membranes and achieved a maximum power density of 250 mW/cm2.
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Low platinum loading electrodes for polymer electrolyte fuel cells fabricated using thermoplastic ionomers
TL;DR: In this article, it was shown that the inclusion of large cations through a simple ion-exchange process renders perfluorosulfonate ionomers moderately melt-processable and significantly improves the structural integrity of the catalyst layers.