Design and investigation of dual-layer electrodes for proton exchange membrane fuel cells

Zhao, Bote; Sun, Lei; Ran, Ran; Shao, Zongping

doi:10.1016/j.ssi.2013.08.025

Cited by 14 publications

(10 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diameter of the semicircle shows the charge transfer (polarization) resistance ( R ct ) of the ORR. The value corresponding to the beginning of the semicircle is defined as the solution resistance ( R s ) …”

Section: Resultsmentioning

confidence: 99%

“…Although the addition of PDMS increases the performance of the fuel cell compared with the commercial catalyst, it was seen that the performance of all fuel cells at high current density regions was poor. In addition, although 10‐wt% PDMS catalyst had smaller ECSA than 20‐wt% PDMS catalyst, its high performance was attributed to the easier diffusion of oxygen to the cathode catalyst layer . The decrease in the electrical conductivity of the electrode with the addition of high amount of PDMS may cause decrease in the fuel cell performance …”

Section: Resultsmentioning

confidence: 99%

“…The value corresponding to the beginning of the semicircle is defined as the solution resistance (R s ). 27,28 The impedance profiles of all catalysts were similar. From the EIS plots, the ohmic resistance of the membrane prior to aging was less than the fuel cell after aging for all catalysts that is showed by the high-frequency intersections of the horizontal axis.…”

Section: Fuel Cell Testingmentioning

confidence: 85%

“…In addition, although 10-wt% PDMS catalyst had smaller ECSA than 20-wt% PDMS catalyst, its high performance was attributed to the easier diffusion of oxygen to the cathode catalyst layer. 28 The decrease in the electrical conductivity of the electrode with the addition of high amount of PDMS may cause decrease in the fuel cell performance. 30…”

Section: Fuel Cell Testingmentioning

confidence: 99%

See 3 more Smart Citations

PEMFC catalyst layer modification with the addition of different amounts of PDMS polymer in order to improve water management

Ungan

Yurtcan

2019

Int J Energy Res

View full text Add to dashboard Cite

Summary The balance between preventing water flooding and adequate humidification of the membrane will provide a significant contribution to proton exchange membrane (PEM) fuel cell performance. For this purpose, polydimethylsiloxane (PDMS), a hydrophobic polymer, was added to the catalyst layer of the fuel cell at different amounts including 5, 10, and 20 wt%. The performances of the fuel cells including PDMS were compared with the commercial catalyst. Morphological changes of the gas diffusion electrodes (GDEs) were confirmed by using scanning electron microscopy (SEM). Fourier transformation infrared spectroscopy (FTIR) was used to determine the functional groups and contact angle measurements were used to determine the hydrophobic characteristics. Cyclic voltammetry (CV), impedance, and oxygen reduction reaction (ORR) analysis were performed for electrochemical characterization and degradation behaviors. In situ PEM fuel cell tests were performed in order to define the best catalyst ink combination that include PDMS. The results of the cyclic voltammograms proved that the electrochemical surface area (ECSA) increased with the increasing amount of PDMS. The highest ECSA of 53.84 m2 g−1 was calculated for catalyst ink with 20‐wt% PDMS. The lowest ECSA loss after aging was observed in the catalyst ink with 10‐wt% PDMS. As a result, the catalyst layer having 10‐wt% PDMS showed the best polymer electrolyte membrane fuel cells (PEMFC) performance.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Fuel Cell Testingmentioning

confidence: 85%

Section: Fuel Cell Testingmentioning

confidence: 99%

See 2 more Smart Citations

PEMFC catalyst layer modification with the addition of different amounts of PDMS polymer in order to improve water management

Ungan

Yurtcan

2019

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…As a result, it is difficult to determine what caused the performance improvements. Zhao et al [ 387 ] reported a novel dual CL in which a hydrophilic layer containing Nafion and Pt/C was first sprayed onto a membrane followed by a hydrophobic layer which contained PTFE and Pt/C, which was achieved by depositing different thicknesses of the respective inks. They reported a performance increase of the dual‐layer CL system compared to commercial PtC (≈10% current density @0.3 V) with maximum current density achieved via use of a thick hydrophilic layer (0.3 mg cm −2 ) and thin PTFE layer (0.1 mg cm −2 ), which was suggested to be due to improved water management across the cell, although this was not characterized in detail in this publication.…”

Section: Catalyst Layer Structurementioning

confidence: 99%

Engineering Catalyst Layers for Next‐Generation Polymer Electrolyte Fuel Cells: A Review of Design, Materials, and Methods

Suter

Smith

Hack

et al. 2021

Advanced Energy Materials

112

115

View full text Add to dashboard Cite

Polymer electrolyte fuel cells (PEFCs) are a promising replacement for the fossil fuel–dependent automotive and energy sectors. They have become increasingly commercialized in the last decade; however, significant limitations on durability and performance limit their commercial uptake. Catalyst layer (CL) design is commonly reported to impact device power density and durability; although, a consensus is rarely reached due to differences in testing conditions, experimental design, and types of data reported. This is further exacerbated by aspects of CL design such as catalyst support, proton conduction, catalyst, fabrication, and morphology, being significantly interdependent; hence, a wider appreciation is required in order to optimize performance, improve durability, and reduce costs. Here, the cutting‐edge research within the field of PEFCs is reviewed, investigating the effect of different manufacturing techniques, electrolyte distribution, support materials, surface chemistries, and total porosity on power density and durability. These are critically appraised from an applied perspective to inform the most relevant and promising pathways to make and test commercially viable cells. This holistic view of the competing aspects of CL design and preparation will facilitate the development of optimized CLs, especially the incorporation of novel catalyst support materials.

show abstract

Technology of passive micro-direct methanol fuel cells

Zhou

Cao

Zhang

et al. 2020

Direct Methanol Fuel Cell Technology

View full text Add to dashboard Cite

Design and investigation of dual-layer electrodes for proton exchange membrane fuel cells

Cited by 14 publications

References 29 publications

PEMFC catalyst layer modification with the addition of different amounts of PDMS polymer in order to improve water management

PEMFC catalyst layer modification with the addition of different amounts of PDMS polymer in order to improve water management

Engineering Catalyst Layers for Next‐Generation Polymer Electrolyte Fuel Cells: A Review of Design, Materials, and Methods

Technology of passive micro-direct methanol fuel cells

Contact Info

Product

Resources

About