A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Jayakumar, Arunkumar

doi:10.1007/s11708-019-0618-y

Cited by 25 publications

(12 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To overcome the limitations of AELs, the concept of replacing the electrolytic solution by a solid polymeric membrane having proton conductivity emerged, and the electrolyzer came to be known as PEMEC, more popularly PEM (Xu and Scott, 2010;Carmo et al, 2013;Paidar et al, 2016;Jayakumar, 2019;Yang et al, 2019). In PEM electrolyzers, oxygen is released at the anode, and the H + ions migrate to the cathode through the solid nonporous polymeric membrane, where they recombine with e − to release hydrogen gas.…”

Section: Proton Exchange Membrane Electrolyzermentioning

confidence: 99%

A Review on Synthesis of Methane as a Pathway for Renewable Energy Storage With a Focus on Solid Oxide Electrolytic Cell-Based Processes

et al. 2020

View full text Add to dashboard Cite

Environmental issues related to global warming are constantly pushing the fossil fuelbased energy sector toward an efficient and economically viable utilization of renewable energy. However, challenges related to renewable energy call for alternative routes of its conversion to fuels and chemicals by an emerging Power-to-X approach. Methane is one such high-valued fuel that can be produced through renewables-powered electrolytic routes. Such routes employ alkaline electrolyzers, proton exchange membrane electrolyzers, and solid oxide electrolyzers, commonly known as solid oxide electrolysis cells (SOECs). SOECs have the potential to utilize the waste heat generated from exothermic methanation reactions to reduce the expensive electrical energy input required for electrolysis. A further advantage of an SOEC lies in its capacity to coelectrolyze both steam and carbon dioxide as opposed to only water, and this inherent capability of an SOEC can be harnessed for in situ synthesis of methane within a single reactor. However, the concept of in situ methanation in SOECs is still at a nascent stage and requires significant advancements in SOEC materials, particularly in developing a cathode electrocatalyst that demonstrates activity toward both steam electrolysis and methanation reactions. Equally important is the appropriate reactor design along with optimization of cell operating conditions (temperature, pressure, and applied potential). This review elucidates those developments along with research and

show abstract

Section: Proton Exchange Membrane Electrolyzermentioning

confidence: 99%

A Review on Synthesis of Methane as a Pathway for Renewable Energy Storage With a Focus on Solid Oxide Electrolytic Cell-Based Processes

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The transport path for either gas or liquid water removal is the same, with both having to progress from the cathode catalyst layer (CL) through a fibrous gas diffusion layer (GDL) to the gas channels. In PEFCs, besides distributing the reactant gases, the GDL provides electrical conductivity between the CL and the bipolar plates, conducts heat away from the CL, and serves as mechanical support to the membrane [5][6][7][8]. In the case of gaseous removal of water, evaporation might occur in the CL or the GDL structure and is followed by Fickian diffusion through the GDL's pore spaces to the gas channel [9].…”

Section: Introductionmentioning

confidence: 99%

Mass Transport Limitations of Water Evaporation in Polymer Electrolyte Fuel Cell Gas Diffusion Layers

et al. 2021

View full text Add to dashboard Cite

Facilitating the proper handling of water is one of the main challenges to overcome when trying to improve fuel cell performance. Specifically, enhanced removal of liquid water from the porous gas diffusion layers (GDLs) holds a lot of potential, but has proven to be non-trivial. A main contributor to this removal process is the gaseous transport of water following evaporation inside the GDL or catalyst layer domain. Vapor transport is desired over liquid removal, as the liquid water takes up pore space otherwise available for reactant gas supply to the catalytically active sites and opens up the possibility to remove the waste heat of the cell by evaporative cooling concepts. To better understand evaporative water removal from fuel cells and facilitate the evaporative cooling concept developed at the Paul Scherrer Institute, the effect of gas speed (0.5–10 m/s), temperature (30–60 °C), and evaporation domain (0.8–10 mm) on the evaporation rate of water from a GDL (TGP-H-120, 10 wt% PTFE) has been investigated using an ex situ approach, combined with X-ray tomographic microscopy. An along-the-channel model showed good agreement with the measured values and was used to extrapolate the differential approach to larger domains and to investigate parameter variations that were not covered experimentally.

show abstract

“…187 When other studies were examined, it was observed that proton exchange membrane fuel cells (PEMFCs) are very important in the effective operation of proton exchange between the anode and cathode. 188 Nafion, a perfluorosulfonic acid type polymer, is used in the production of these membranes, which then gain the hydrophilic sulfonic acid assets associated with Nafion. Regrettably, Nafion suffers from a decrease in capacity at high temperature and also is costly.…”

Section: Proton Exchange Membranesmentioning

confidence: 99%

A Comprehensive Review on the Applications of Boron Nitride Nanomaterials in Membrane Fabrication and Modification

Vatanpour

Mehrabani

Keskin

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Boron nitride (BN) presented enormous potential in the fabrication of novel membranes with superior separation efficiency. Researchers try to produce membranes with high solvent permeability and good rejection performance in industrial applications. In this review, the recent progress in the fabrication of BN-based membranes with different fabrication techniques and various applications is reviewed. Representative studies on applying BN-based membranes in gas separation, proton exchange, electrodialysis, and water filtration membranes to develop their performance and stability, induce antifouling characteristics, and decline the trade-off between selectivity and permeability, together with the explanation of their mechanisms, are discussed. Moreover, various methods of synthesis of BN allotropes are introduced. In addition, a brief review of simulation studies (molecular dynamic and density function theory) on theoretical studies of BN nanosheet membranes was performed. The authors hope that this review will arouse the active interest of many researchers in the further development of the BNs application in membrane science and technology.

show abstract

A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Cited by 25 publications

References 116 publications

A Review on Synthesis of Methane as a Pathway for Renewable Energy Storage With a Focus on Solid Oxide Electrolytic Cell-Based Processes

A Review on Synthesis of Methane as a Pathway for Renewable Energy Storage With a Focus on Solid Oxide Electrolytic Cell-Based Processes

Mass Transport Limitations of Water Evaporation in Polymer Electrolyte Fuel Cell Gas Diffusion Layers

A Comprehensive Review on the Applications of Boron Nitride Nanomaterials in Membrane Fabrication and Modification

Contact Info

Product

Resources

About