Erratum: An Experimental Study of the Effects of Operational History on Activity Changes in a PEMFC [<i>J. Electrochem. Soc.,</i>160, F1067 (2013)]

Jomori, Shinji; Komatsubara, Kaori; Nonoyama, Nobuaki; Kato, Manabu; Yoshida, Toshihiko

doi:10.1149/2.059310jes

Cited by 1 publication

(2 citation statements)

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“…Jomori et al. [ 149 ] studied the effects of low humidity operation on a 1 cm 2 cell, where the cell was left to operate for 18 h at a 20% RH. Using the current density achieved at 0.9 V after 200 s as a benchmark, they found that after 13 h of operating at low humidity, the normalized activity level of the cell had dropped by 68% when compared to the activity measured immediately after the cell's activation.…”

Section: Catalyst Layer Performance Characterizationmentioning

confidence: 99%

“…This effect is more extreme under low humidity conditions, suggesting further mechanisms of ionomer change were occurring. [ 297 ] Ionomer sulfonic acid group adsorption to the Pt surface reduces the number of electrochemically active Pt sites, and the ionomer backbone forming a continuous layer can prohibit oxygen transport. [ 61,235,298 ] High WU in high RH conditions is suspected to mitigate Pt poisoning as the degree of sulfonic acid adsorption decreases with increased interfacial water.…”

Section: Ionomer Distributionmentioning

confidence: 99%

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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

134

115

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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.

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Section: Catalyst Layer Performance Characterizationmentioning

confidence: 99%

Section: Ionomer Distributionmentioning

confidence: 99%