Results 191 to 200 of about 28,179 (226)
Some of the next articles are maybe not open access.
Functionalised Polybenzimidazoles for PEMFC
ECS Meeting Abstracts, 2008Abstract not Available.
Péron, Jennifer +4 more
openaire +2 more sources
Materials Science Forum, 2007
In this paper reactions having strong influence on the lifetime of PEMFCs are described. These lifetime limiting reactions are related to the catalyst (increase of the particle size, catalyst dissolution, oxidation of the carbon catalyst support, catalyst deactivation by contaminants), to the membrane (degradation, loss of membrane humidification ...
Ludwig Jörissen +3 more
openaire +1 more source
In this paper reactions having strong influence on the lifetime of PEMFCs are described. These lifetime limiting reactions are related to the catalyst (increase of the particle size, catalyst dissolution, oxidation of the carbon catalyst support, catalyst deactivation by contaminants), to the membrane (degradation, loss of membrane humidification ...
Ludwig Jörissen +3 more
openaire +1 more source
Effectiveness of PEMFC historical state and operating mode in PEMFC prognosis
International Journal of Hydrogen Energy, 2020Abstract As a high efficiency and environmental friendly energy conversion technique, proton exchange membrane fuel cell (PEMFC) system faces challenges of limited durability and performance decay during long-term operation. Prognosis estimates the remaining useful life (RUL) of the system, from which maintenance policy can be scheduled to extend its
Kai He +5 more
openaire +1 more source
PEMFC Electrocatalyst Development
ECS Meeting Abstracts, 2010Abstract not Available.
David Stevens +5 more
openaire +1 more source
Composite Proton‐Conducting Membranes for PEMFCs
Fuel Cells, 2007AbstractComposite membranes are of interest for PEMFCs and DMFCs. This paper describes a basic study of the influence of silica on the proton conductivity: (i) added as a filler to poly(vinylidene fluoride‐hexafluoropropylene) and poly(benzimidazole)‐based membranes activated with H3PO4, or (ii) included in the matrix of class II hybrids based on ...
Mustarelli, P +6 more
openaire +4 more sources
Journal of Fuel Cell Science and Technology, 2014
Proton exchange membrane fuel cells (PEMFCs) have many advantages among the various types of fuel cells, such as high energy density, low temperature operation, near-zero pollution, and quick starting. Thereby, PEMFCs have been considered as the most promising alternative power sources in the transportation and stationary fields.
C. A. C. Sequeira, L. Amaral
openaire +1 more source
Proton exchange membrane fuel cells (PEMFCs) have many advantages among the various types of fuel cells, such as high energy density, low temperature operation, near-zero pollution, and quick starting. Thereby, PEMFCs have been considered as the most promising alternative power sources in the transportation and stationary fields.
C. A. C. Sequeira, L. Amaral
openaire +1 more source
ECS Transactions, 2006
Some key subjects for PEMFC cell stack stability and durability in the field are reviewed with power plant shut down statistics, cell stack performance after field operation up to 10k hours, and cell stack failure case studies. Mitigation strategy including system-oriented approach is discussed based on lessons learnt.
Akira Maekawa, Tsutomu Aoki
openaire +1 more source
Some key subjects for PEMFC cell stack stability and durability in the field are reviewed with power plant shut down statistics, cell stack performance after field operation up to 10k hours, and cell stack failure case studies. Mitigation strategy including system-oriented approach is discussed based on lessons learnt.
Akira Maekawa, Tsutomu Aoki
openaire +1 more source
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 +4 more
openaire +1 more source
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 +4 more
openaire +1 more source
Modeling of H2O2 Formation in PEMFCs
ECS Meeting Abstracts, 2008Abstract not Available.
Cheng Chen, Thomas F. Fuller
openaire +1 more source
On Flow Maldistribution in PEMFC Stacks
International Journal of Green Energy, 2011Polymer electrolyte membrane fuel cell (PEMFC) stacks are widely studied for their own advantages. The flow maldistribution in unit cells may severely influence the fuel cell stack performance, mainly including the uniformity of current density and the voltage.
J. Wang, J. Yan, J. Yuan, B.Sunden
openaire +2 more sources