Fabrication and performance of catalyst-coated membranes by layer-by-layer deposition of catalyst onto Nafion for polymer electrolyte membrane fuel cells

Yılmaztürk, Serpil; Gümüşoğlu, Tolga; Arı, Gülşen Albayrak; Öksüzömer, M.A. Faruk; Deligöz, Hüseyin

doi:10.1016/j.jpowsour.2011.10.116

Cited by 20 publications

(10 citation statements)

References 39 publications

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“…This behavior can be attributed to the formation of Pt including multilayers which may restrict the diffusion of gas or products at the cathode side. Furthermore, Pt utilization of the (PAH/sPAni‐H + ) 10‐Pt based MEA was found to be 720 mW mgPt −1 which was very comparable to the literature . As it is known, Pt utilization is related to TPB and mainly responsible for the performance of a PEMFC .…”

Section: Resultssupporting

confidence: 80%

“…In the preparation of CCMs, our modified method was applied to dope platinum (Pt) into lbl film . In this method, 10 m M H 2 PtCl 6 was first mixed with Vulcan and this mixture was subsequently dispersed into sPAni solution in the presence of Nafion (5 wt %) using an ultrasonic stirrer.…”

Section: Methodsmentioning

confidence: 99%

“…Finally, it was found much higher Pt utilizations, 3198 mW mgPt −1 than that of MEA produced using conventional methods (∼800 mW mgPt −1 ) . Very recently, our group reported the preparation of CCMs using four different lbl fabrication techniques and it was found that the use of anionic polyelectrolyte, platinum salt, Nafion solution, and carbon mixture resulted in higher PEM cell power output . In a different work reported by Michel et al, it was demonstrated that the incorporation of functionalized polyaniline fibers (Pt/PAni‐F) in lbl structures can give high fuel cell performance and Pt utilization due to the high conductance of PAni‐F as well as ion/gas transport …”

Section: Introductionmentioning

confidence: 94%

“…As it is known, fuel cell electrodes require three essential properties: They should be electronically conductive, proton conductive, and able to trigger a chemical reaction catalyzed by a metal . Since sPAni is water soluble and has parallel electronic/ionic conductivity, it is possible to create nano‐thickness conductive multilayers with an increased probability of the triple‐phase contact using lbl technique.…”

Section: Introductionmentioning

confidence: 99%

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Nanostructured membrane electrode assemblies from layer‐by‐layer composite/catalyst containing membranes and their fuel cell performances

Deligöz

Yılmaztürk

Gümüşoğlu

2014

J of Applied Polymer Sci

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In this study, two approaches are compared to develop nanostructured membrane electrode assemblies (MEA) using layer‐by‐layer (lbl) technique. The first is based on the direct deposition of polyallylamine hydrochloride (PAH) and sulfonated polyaniline (sPAni) on Nafion support to prepare lbl composite membrane. In the second approach, sPAni is coated on the support in the presence of platinum (Pt) salt, Nafion solution and Vulcan for obtaining catalyst containing membranes (CCMs). SEM and UV–vis analysis show that the multilayers are deposited on both sides of Nafion successfully. Although H2/O2 single cell performances of acid doped lbl composite membrane based MEA are found to be at the range of 126 and 160 mW cm−2 depending on the number of deposited layers, the cell performance of MEA obtained from catalyst containing lbl self‐assembled thin membrane (PAH/sPAni‐H+)10‐Pt is found to be 360 mW cm−2 with a Pt utilization of 720 mW mgPt−1. This performance is 82% higher as compared to original Nafion®117 based MEA (198 mW cm−2). From the cell performance evaluations for different structured MEAs, it is mainly found out that the use of lbl CCMs instead of composite membranes and fabrication of thinner electrolytes result in a higher H2/O2 cell activity due to significant reduction in ohmic resistivity. Also, it is observed that the use of sPAni slightly improves the cell performance due to an increased probability of the triple phase contact and it can lead to superior physicochemical properties such as conductivity and thermal stability. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40314.

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Section: Resultssupporting

confidence: 80%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Nanostructured membrane electrode assemblies from layer‐by‐layer composite/catalyst containing membranes and their fuel cell performances

Deligöz

Yılmaztürk

Gümüşoğlu

2014

J of Applied Polymer Sci

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“…The performances of the MEAs were determined in a HENAT-ECH PEM fuel cell test station using single cell [44]. In each case, the MEA was compressed between two bipolar plates using an automatic fuel cell test fixture system (0.3 MPa).…”

Section: Pemfc Testsmentioning

confidence: 99%

Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes

Bozbağ¹,

Gümüşoğlu²,

Yılmaztürk³

et al. 2015

The Journal of Supercritical Fluids

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Layer by Layer Assemble of Colloid Nanomaterial and Functional Multilayer Films for Energy Storage and Conversion

Zhou¹,

Utetiwabo²,

Chen³

et al. 2019

Comprehensive Nanoscience and Nanotechnology

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Fabrication and performance of catalyst-coated membranes by layer-by-layer deposition of catalyst onto Nafion for polymer electrolyte membrane fuel cells

Cited by 20 publications

References 39 publications

Nanostructured membrane electrode assemblies from layer‐by‐layer composite/catalyst containing membranes and their fuel cell performances

Nanostructured membrane electrode assemblies from layer‐by‐layer composite/catalyst containing membranes and their fuel cell performances

Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes

Layer by Layer Assemble of Colloid Nanomaterial and Functional Multilayer Films for Energy Storage and Conversion

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