improved polymer electrolyte fuel cell performance

Development and application of a generalised steady-state electrochemical model for a PEM fuel cell R F Mann J Amphlett M Hooper Abstract Models have previously been developed and published to predict the steady-state performance of solid polymer electrolyte membrane fuel cells (PEMFC) In general such models have been 2010-8-10A design procedure is presented that improves the energy efficiency and saves catalyst material of a polymer electrolyte membrane fuel cell (PEMFC) The method is demonstrated for a single cell in a stack and uses the theorem of equipartition of entropy production to maximize energy efficiency The gas supply and water outlet systems designed to produce entropy uniformly have a fractal

CES

2009-9-21Experimental Investigation and Multi-scale Modeling of Polymer Electrolyte Fuel Cells (Current research by Venkat Viswanathan Frank Wang Stephen Walch and Seung Hyun Kim ) Research in this area focusses on the development of a multi-scale model describing the electrochemistry in proton exchange membrane fuel cells (PEMFCs)

2017-4-10fuel cell systems [1–3] As one might realize the use of Pt-based catalyst represents one of the main limitations of the technology in terms of its commercial viability In the last decade much of the developmental work has been focused on ways to improve the performance of polymer electrolytes

The gas diffusion layer in a polymer electrolyte fuel cell is the component primarily responsible for effective water management under a wide variety of conditions The incorporation of hydrophilic alumosilicate fibers in the microporous layer leads to an improvement in the fuel cell performance associated with a decrease in the mass transport

Nanocomposite Polymer Electrolyte Membrane for High Performance Microbial Fuel Cell: Synthesis Characterization and Application To cite this article: Piyush Kumar and Ram Prakash Bharti 2019 J Electrochem Soc 166 F1190 View the article online for updates and enhancements

In solid polymer electrolyte fuel cells an oxygen evolution reaction (OER) catalyst may be incorporated at the anode along with the primary hydrogen oxidation catalyst for purposes of tolerance to voltage reversal Incorporating this OER catalyst in a layer at the interface between the anode's primary hydrogen oxidation anode catalyst and its gas diffusion layer can provide greatly improved

Sandeep Bhattacharya

Membrane durability is a major consideration for the operational lifetime of polymer electrolyte membrane fuel cells During fuel cell operation the membrane is exposed to combined chemical and mechanical degradation that could ultimately lead to hydrogen leaks and cell failure

Abstract The performance and durability of a polymer electrolyte fuel cell (PEFC) operating with reformate is discussed Brief overviews are given on how dilution affects the thermodynamic driving force and how diffusion of N 2 and CO 2 two major components in a typical reformate mix affects the overall voltage The primary focus is on the impact of CO on the voltage performance of the PEFC

2012-12-18Fuel and oxidant crossover through the membrane results in reduced fuel cell performance through the formation of mixed electrode potentials as well as through reduced fuel utilization The hydrogen crossover target allows a nominal loss of 1% current from hydrogen crossover at 300 mA/cm 2 and lower still at 1000 mA/cm 2

2018-11-5Lithium-Ion and Polymer Electrolyte Fuel Cell Electrode Coatings • Presented by: Marissa Wood Oak Ridge National Laboratory October 29th 2018 Thick Structured Electrode Designs for Improved Electrochemical Performance Current Collector Current Collector Current Collector Current Collector Structured Designs Areal Loading Particle

2015-8-1The use of the polymer electrolyte membrane fuel cell (PEMFC) for transport applications requires electrodes that produce a high power density with low catalyst loading The US-DOE has set the target of reducing the PGM (Pt group metal) content to about 0 125 mg

2018-10-101 3 1 Methanol as at Fuel 7 1 3 2 Fuel Cell Performance 7 1 3 3 Methanol Crossover 8 1 4 Previous Work on Polymer Electrolyte Membranes 9 1 4 1 Water Replacement 9 1 4 2 Immobilization of Imidazole 9 2 Modification Thermal and Mechanical Properties of

2018-11-5Lithium-Ion and Polymer Electrolyte Fuel Cell Electrode Coatings • Presented by: Marissa Wood Oak Ridge National Laboratory October 29th 2018 Thick Structured Electrode Designs for Improved Electrochemical Performance Current Collector Current Collector Current Collector Current Collector Structured Designs Areal Loading Particle

Device testing of polymer electrolyte membrane fuel cell catalysts is essential for electrocatalyst development yet most reported catalysts fabricated with nanoceramic coatings via atomic layer deposition (ALD) have not been thoroughly examined in this fashion Platinum nanoparticle catalysts supported on functionalized XC72 carbon black that had been modified with sub-monolayer WN films

U S DOE Progress Towards Developing Low

2012-12-18Fuel and oxidant crossover through the membrane results in reduced fuel cell performance through the formation of mixed electrode potentials as well as through reduced fuel utilization The hydrogen crossover target allows a nominal loss of 1% current from hydrogen crossover at 300 mA/cm 2 and lower still at 1000 mA/cm 2

Kayoung Park Tomohiro Ohnishi Masaki Goto Magnus So Sakae Takenaka Yoshifumi Tsuge Gen Inoue Improvement of cell performance in catalyst layers with silica-coated Pt/carbon catalysts for polymer electrolyte fuel cells International Journal of Hydrogen Energy

2020-6-8Influence of Ionomer Content on Both Cell Performance and Load Cycle Durability for Polymer Electrolyte Fuel Cells Using Pt/Nb-SnO2 Cathode Catalyst Layers K Kakinuma R Kobayashi A Iiyama M Uchida J Electrochem Soc 165 (No 15) J3083-J3089 (2018 9)

2020-1-16Article Anode-Design Strategies for Improved Performance of Polymer-Electrolyte Fuel Cells with Ultra-Thin Electrodes Andrew J Steinbach 1 Jeffrey S Allen 7 Rodney L Borup 2 Daniel S Hussey 3 David L Jacobson 3 Andrei Komlev 1 Anthony Kwong 4 James MacDonald 4 Rangachary Mukundan 2 Matt J Pejsa 1 Michael Roos 4 Anthony D Santamaria 4 6 James M Sieracki 1 Dusan

In solid polymer electrolyte fuel cells an oxygen evolution reaction (OER) catalyst may be incorporated at the anode along with the primary hydrogen oxidation catalyst for purposes of tolerance to voltage reversal Incorporating this OER catalyst in a layer at the interface between the anode's primary hydrogen oxidation anode catalyst and its gas diffusion layer can provide greatly improved

Review of characterization and modeling of polymer electrolyte fuel cell catalyst layer: The blessing and curse of ionomer A new high-performance fuel cell employing conducting-porous-teflon electrodes and liquid electrolytes An improved two-dimensional agglomerate cathode model to study the influence of catalyst layer structural

Iron-based catalysts for the oxygen-reduction reaction in polymer electrolyte membrane fuel cells have been poorly competitive with platinum catalysts in part because they have a comparatively low number of active sites per unit volume We produced microporous carbon–supported iron-based catalysts with active sites believed to contain iron cations coordinated by pyridinic nitrogen