Results 101 to 110 of about 1,773 (146)

Mathematical model of the PEMFC

Journal of Applied Electrochemistry, 2000
A two-dimensional along-the-channel mass and heat transfer model for a proton exchange membrane fuel cell (PEMFC) is described. The model is used for calculation of cell performance (i.e., cell voltage against current density), ohmic resistance and water profile in the membrane, current distribution and variation of temperature along the gas channels ...
K. Dannenberg, P. Ekdunge, G. Lindbergh
openaire   +1 more source

Aspects of PEMFC Degradation

ECS Transactions, 2006
Two important aspects for understanding membrane degradation in PEM fuel cells are Pt dissolution, migration and precipitation from the electrodes into the membrane and chemical attack of the membrane by hydroxyl radicals. Transmission electron microscopy was used to detect and quantify the distribution of Pt particles in Nafion membrane after ...
Sergei F. Burlatsky, Vadim Atrazhev, Ned Cipollini, David Condit, Nikolai Erikhman   +4 more
openaire   +1 more source

PEMFC Electrocatalyst Development

ECS Meeting Abstracts, 2010
Abstract not Available.
David Stevens, Tim Hatchard, Robbie Sanderson, Radoslav T. Atanasoski, Mark K. Debe, Jeff Dahn   +5 more
openaire   +1 more source

Dynamics and control of membrane hydration in a PEMFC

2009 American Control Conference, 2009
The Jubject of water mallagement is a key issue in the design and operation of Polymer Electrolyte Membrane Fuel Cells (PEMFC). In this paper we present a dynamic model central to understanding the water management and flooding issue. First we consider membrane hydration and show how the interplay between electro-osmatic drag and back-diffusion ...
Syed Ahmed, Donald J. Chmielewski
openaire   +1 more source

A novel design and microfabrication for a micro PEMFC

Microsystem Technologies, 2003
A novel design and microfabrication were developed for a micro PEM (Proton Exchange Membrane) fuel cell with a cross section of 5cm2 and thickness (for a single cell) of about 800 μm. A new design and fabrication processes were developed for both flow field plate and MEA parts. Air flows were completed in hydrogen fuel cells with low input pressure and
Shou-Shing Hsieh, Jenn-Kun Kuo, Ching-Fang Hwang, Hwang-Hsiu Tsai   +3 more
openaire   +1 more source

Design of Supported PtCo Electrocatalysts for Pemfcs

ECS Meeting Abstracts, 2015
Pt-alloy electrocatalysts have been investigated for operation in both hydrogen and methanol-fed polymer electrolyte membrane (PEM) fuel cells  with the aim of evaluating their performance and resistance to degradation. Nanosized PtCo catalysts with particle size of about 3 nm were prepared by using a sulphite complex route  [1-4].
Stassi A, Gatto I, Sacca A, Patti A, Monforte G, Baglio V, Arico AS   +6 more
openaire   +2 more sources

Analyzing microcogeneration systems based on LT-PEMFC and HT-PEMFC by energy balances

Applied Energy, 2013
Abstract This paper focuses on the performance analysis of microcogeneration systems based on the integration between a reforming unit (RFU), consisting of a natural gas steam reforming, and a power unit, based on the PEM fuel cell technology.
JANNELLI, Elio, MINUTILLO, Mariagiovanna, Perna A.   +2 more
openaire   +1 more source

Effects of Membrane Additives on PEMFC Conditioning

ChemistrySelect, 2019
Abstract Durability and cost are the major hurdles preventing fuel cell technology from large‐scale commercialization. Membrane degradation due to insufficient chemical stability is one of the main factors affecting fuel cell durability. Using additives as scavenger, the membrane durability can be dramatically enhanced.
Zhao, Nana, Yuan, Xiao‐Zi, Girard, Francois, Wang, Keping, Li, Jing, Shi, Zhiqing, Xie, Zhong   +6 more
openaire   +2 more sources

Parameter Optimization of PEMFC with Genetic Algorithm

New Mathematics and Natural Computation, 2016
This paper provides a review of recent research in the application of genetic algorithms to proton exchange membrane fuel cell parameter optimization.
Puja Bhatt, Neha Agarwal, Uday K. Chakraborty   +2 more
openaire   +1 more source

Water Problem in PEMFC

2007
Anew generator performing highly-efficient with low (or no) pollutant emission is necessary to resolve the problem of exhaustion of fissile fuel and spreading environmental pollution. Fuel cell has been expected as one candidate of the generator. Among several types of fuel cells polymer electrolyte membrane fuel cell (PEMFC), can operate at low ...
openaire   +1 more source