1-20 of 37
Keywords: diffusion
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2021, 18(1): 011010.
Paper No: JEECS-20-1001
Published Online: May 11, 2020
...Minh-Quy Le; Huu-Tu Nguyen; Thanh-Lam Bui We study through extensive finite element analysis the lithium diffusion in small elements of Si anodes under the forms of spheres, rods, and circular disks for Li-ion batteries. Elastoplastic properties of the amorphous silicon are assumed to be lithium...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2020, 17(1): 011007.
Paper No: JEECS-19-1036
Published Online: September 10, 2019
... of about 102.5 mAh/g at a low current rate (C/20), which decreases to 36.75 mAh/g at a relatively higher rate (2C). The capacity retention at C/10 after 50 cycles is 85.7%. The evaluation of Na-ion diffusion coefficients (D Na+ ) in NMO is accomplished by potentiostatic intermittent titration technique...
Journal Articles
Publisher: ASME
Article Type: Review Articles
J. Electrochem. En. Conv. Stor. August 2016, 13(3): 030803.
Paper No: JEECS-16-1079
Published Online: December 12, 2016
... on the intimate coupling between stresses and electrochemical processes, including diffusion-induced stresses, stress-regulated surface charge transfer, interfacial reactions, inhomogeneous growth of lithiated phases, instability of solid-state reaction front (SSRF), as well as lithiation-modulated plasticity...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Electrochem. En. Conv. Stor. February 2014, 11(1): 011001.
Paper No: FC-11-1086
Published Online: October 17, 2013
..., 2013; published online October 17, 2013. Assoc. Editor: Abel Hernandez. 28 06 2011 05 09 2013 In fuel cell systems with an anode recirculation cycle that runs overstoichiometrically, an undesired enrichment of nitrogen and water vapor occurs due to their diffusion through...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2012, 9(1): 011016.
Published Online: December 27, 2011
..., electrochemistry, electrical conduction, and diffusion physics. This model was built using the actual button cell testing geometry and using experimental data for validation purposes. The objective of this study is to understand the effects of the testing setup used on the cell performance and to recommend...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2011, 8(5): 051021.
Published Online: July 12, 2011
...Henning Severson; Mohsen Assadi In this paper results from a parameter study of an anode-supported solid oxide fuel cell (SOFC) are presented. The effects on performance, current-voltage (I-V) characteristics, polarization voltages, and diffusion coefficients are modeled for different temperatures...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. October 2011, 8(5): 051008.
Published Online: June 17, 2011
... multifunctional efficiencies ranging from 22% to 69%. The higher efficiency was obtained by optimizing the contact pressure at the gas diffusion layer (GDL) in a model cell design. The efficiencies obtained suggest the need for improved multifunctional designs in order to reach system level mass savings. 04...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2011, 8(1): 011003.
Published Online: November 1, 2010
...Terry B. Caston; Kanthi L. Bhamidipati; Haley Carney; Tequila A. L. Harris The goal of this study is to design a gas diffusion layer (GDL) for a polymer electrolyte membrane (PEM) fuel cell with a graduated permeability and thereby graduating the resistance to flow throughout the GDL. It has been...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2010, 7(3): 031021.
Published Online: March 17, 2010
...-dependent phenomena. Evaporation and capillarity were assumed to be the predominant mechanisms of water flow through the gas diffusion media. The innovative features of the model are not only to simulate the water transport inside the porous media with relative simplicity, but also to simulate the water...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. April 2010, 7(2): 021022.
Published Online: January 25, 2010
... and electrolyte. Oxygen vacancies can be increased by adding Co in a certain crystal structure. Increasing the amount of oxygen vacancies in the cathode material improves the oxygen reduction kinetics because oxygen diffusion and surface exchange may be enhanced. It was reported that the oxygen tracer diffusion...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. April 2010, 7(2): 021009.
Published Online: January 6, 2010
... by adjusting the liquid water saturation at the interface of the cathode gas diffusion layer and flow channels. S V is the source/sink for water vapor. At the GDLs, water vapor only comes from phase change S V = S e / c . When local water vapor pressure p V = C V R...
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2009, 6(3): 031016.
Published Online: June 8, 2009
... relative humidity sensors embedded in the anode and cathode flow field plates. The effects of the relative humidity and stoichiometry of the cathode inlet on relative humidity distribution in the channels and on water accumulation in the gas diffusion layers (GDLs) were investigated in this study...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. February 2009, 6(1): 011006.
Published Online: November 4, 2008
...Ming-San Lee; Long-Jeng Chen; Ting-Huai Chen A new hydrophobic micropillared structure for the electrode of a proton exchange membrane fuel cell (PEMFC) is proposed in this study. Its performance has a 40% increase over the conventional structured electrode. The new design changes the gas-diffusion...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. November 2008, 5(4): 041011.
Published Online: September 11, 2008
...Kui Jiao; Biao Zhou Liquid water transport inside proton exchange membrane (PEM) fuel cells is one of the key challenges for water management in a PEM fuel cell. Investigation of the air-water flow patterns inside fuel cell gas flow channels with gas diffusion layer (GDL) would provide valuable...