Cover Picture: Fuel Electrode Carbon Corrosion in High Temperature Polymer Electrolyte Fuel Cells—Crucial or Irrelevant? (Energy Technol. 1/2016)

Engl, Tom; Gubler, Lorenz; Schmidt, Thomas

doi:10.1002/ente.201500354

Cited by 36 publications

(8 citation statements)

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“…This creates high cathodic transient potentials of up to 1.6 V, causing C corrosion and consequently irreversible damage to the fuel cell (reverse-current decay mechanism). [261,263,266] Other dynamic operation protocols in fuel cells can accelerate catalyst degradation, like load cycling [252] which exposes the cell to the severe corrosion of C supports, especially when cycling near or at OCV values. [267] Due to the thermal expansion/contraction of the electrodes, at different degrees of hydration, thermal cycling can cause severe C corrosion and metal particle sintering.…”

Section: Catalyst Degradationmentioning

confidence: 99%

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Catalyst Development for High‐Temperature Polymer Electrolyte Membrane Fuel Cell (HT‐PEMFC) Applications

Šešelj¹,

Alfaro²,

Bompolaki³

et al. 2023

Advanced Materials

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A constant increase in global emission standard is causing fuel cell (FC) technology to gain importance. Over the last two decades, a great deal of research has been focused on developing more active catalysts to boost the performance of high‐temperature polymer electrolyte membrane fuel cells (HT‐PEMFC), as well as their durability. Due to material degradation at high‐temperature conditions, catalyst design becomes challenging. Two main approaches are suggested: (i) alloying platinum (Pt) with low‐cost transition metals to reduce Pt usage, and (ii) developing novel catalyst support that anchor metal particles more efficiently while inhibiting corrosion phenomena. In this comprehensive review, the most recent platinum group metal (PGM) and platinum group metal free (PGM‐free) catalyst development is detailed, as well as the development of alternative carbon (C) supports for HT‐PEMFCs.

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Section: Catalyst Degradationmentioning

confidence: 99%

“…V) is negligible due to the sluggish reaction rate. [261,263] Above 1.0 V, however, C can severely corrode (Equation 4), resulting in irreversible performance degradation (Figure 9B). [261] C…”

Section: Catalyst Degradationmentioning

confidence: 99%

Catalyst Development for High‐Temperature Polymer Electrolyte Membrane Fuel Cell (HT‐PEMFC) Applications

Šešelj¹,

Alfaro²,

Bompolaki³

et al. 2023

Advanced Materials

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“…[5][6][7][8] Despite the high significance, a comprehensive review of the corrosion of EESC devices is lacking in the current literature. Only a few recent reviews are available in this area where specific corrosion issues relevant to PEMCs, [9,10] Li-ion batteries (LIBs) [11][12][13] and Zn-air batteries (ZABs) [14,15] are addressed. Most of the recently published reviews addressed carbon corrosion in PEMCs, [9,10] corrosion of current collectors in LIBs [11][12][13] or anode corrosion in ZABs.…”

Section: Introductionmentioning

confidence: 99%

“…Only a few recent reviews are available in this area where specific corrosion issues relevant to PEMCs, [9,10] Li-ion batteries (LIBs) [11][12][13] and Zn-air batteries (ZABs) [14,15] are addressed. Most of the recently published reviews addressed carbon corrosion in PEMCs, [9,10] corrosion of current collectors in LIBs [11][12][13] or anode corrosion in ZABs. [14,15] Moreover, a significantly higher number of recent reports in these areas need to be comprehended.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Materials Degradation in Electrochemical Energy Storage and Conversion Devices

Saji

2023

ChemElectroChem

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Research and development on electrochemical energy storage and conversion (EESC) devices, viz. fuel cells, supercapacitors and batteries, are highly significant in realizing carbon neutrality and a sustainable energy economy. Component corrosion/ degradation remains a major threat to EESC device's long-term durability. Here, we provide a comprehensive account of the EESC device's corrosion and degradation issues. Discussions are mainly on polymer electrolyte membrane fuel cells, metal-ion and metal-air batteries and supercapacitors. Corrosion of bipolar plates/current collectors, carbon corrosion, electrode/ electrocatalyst degradation, and various mitigation approaches are detailed. The collective information provided could help develop EESC devices with better durability.

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“…They proposed that the effective potential cycling of the anode electrode between ≈0 V (H 2filled anode) and ≈1 V (air-filled anode) might be the cause for the observed thinning (6). In another recent study, Engl et al observed a significant amount of anode degradation in in phosphoric acid based high temperature proton exchange membrane fuel cells (HT-PEMFC) during SUSD (18). While Engl et al focused mainly on the anode carbon corrosion during SUSD in HT-PEMFCs, the study presented in this manuscript is mainly dedicated to obtain further insights into the anode ECSA loss due to the H 2 /air front induced potential cycles in low temperature PEMFCs.…”

Section: Introductionmentioning

confidence: 99%

Anode Aging through Voltage Cycling Induced by H₂-Air Fronts during System Start-Up and Shut-Down

et al. 2017

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Passing a H 2 /air front through the anode compartment during start-up or shut-down (SUSD) is a major source of degradation for PEMFC systems, due to the severe cathode carbon support oxidation and cathode ECSA loss during the induced reverse current event. In this publication, we quantified the anode degradation in a low temperature proton exchange membrane fuel cell (PEMFC) during SUSD for the first time, occurring predominantly in the form of ECSA loss, measured by cyclic voltammetry on both anode and cathode after aging MEAs by SUSD cycling: after 3200 SUSD cycles, the anode ECSA decreased by ≈43%, while the cathode ECSA decreased by ≈76%. We suggest that the anode ECSA loss derives from the change of gas atmosphere upon the passage of the H 2 /air front during SUSD, effectively inducing rapid voltage cycles between ≈0 and ≈1 V. Even though the decrease in anode ECSA is lower compared to the cathode, estimates of the HOR overpotential changes due to anode ECSA loss project significant kinetic voltage losses at the anode for ultra-low Pt loadings (≤ 50 µg Pt cm -2 ).

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Cover Picture: Fuel Electrode Carbon Corrosion in High Temperature Polymer Electrolyte Fuel Cells—Crucial or Irrelevant? (Energy Technol. 1/2016)

Cited by 36 publications

References 0 publications

Catalyst Development for High‐Temperature Polymer Electrolyte Membrane Fuel Cell (HT‐PEMFC) Applications

Catalyst Development for High‐Temperature Polymer Electrolyte Membrane Fuel Cell (HT‐PEMFC) Applications

Corrosion and Materials Degradation in Electrochemical Energy Storage and Conversion Devices

Anode Aging through Voltage Cycling Induced by H₂-Air Fronts during System Start-Up and Shut-Down

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Cover Picture: Fuel Electrode Carbon Corrosion in High Temperature Polymer Electrolyte Fuel Cells—Crucial or Irrelevant? (Energy Technol. 1/2016)

Cited by 36 publications

References 0 publications

Catalyst Development for High‐Temperature Polymer Electrolyte Membrane Fuel Cell (HT‐PEMFC) Applications

Catalyst Development for High‐Temperature Polymer Electrolyte Membrane Fuel Cell (HT‐PEMFC) Applications

Corrosion and Materials Degradation in Electrochemical Energy Storage and Conversion Devices

Anode Aging through Voltage Cycling Induced by H2-Air Fronts during System Start-Up and Shut-Down

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Anode Aging through Voltage Cycling Induced by H₂-Air Fronts during System Start-Up and Shut-Down