Catalyst Durability for Fuel Cells under Start-Up and Shutdown Conditions: Evaluation of Ru and Ir Sputter-Deposited Films on Platinum in PEM Environment

2019 ◽  
Vol 41 (1) ◽  
pp. 785-795 ◽  
Author(s):  
Liliana L. Atanasoska ◽  
George Vernstrom ◽  
Gregory M. Haugen ◽  
Radoslav Atanasoski
Keyword(s):  
Fuel Cells ◽  
Start Up ◽  
Catalyst Durability ◽  
Sputter Deposited ◽  
Deposited Films

Fuel Cells Catalyst for Start-Up and Shutdown Conditions: Electrochemical, XPS, and STEM Evaluation of Sputter-Deposited Ru, Ir, and Ti on Pt-Coated Nanostructured Thin Film Supports

2012 ◽  
Vol 3 (3-4) ◽  
pp. 284-297 ◽  
Author(s):  
Radoslav T. Atanasoski ◽  
Ljiljana L. Atanasoska ◽  
David A. Cullen ◽  
Gregory M. Haugen ◽  
Karren L. More ◽  
...  
Keyword(s):  
Thin Film ◽  
Fuel Cells ◽  
Nanostructured Thin Film ◽  
Start Up ◽  
Sputter Deposited

The performance of intermediate temperature solid oxide fuel cells with sputter deposited La1-xSrxCoO3 interlayer

2021 ◽  
Author(s):  
A. A. Solovyev ◽  
A. V. Shipilova ◽  
I. V. Ionov ◽  
E. A. Smolyanskiy ◽  
A. V. Nikonov ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Sputter Deposited

Alternate Hydrogen Pump Method Enables Start-Up from −30°C for Graphite-Bipolar-Plate Proton Exchange Membrane Fuel Cells

2019 ◽  
Vol 166 (14) ◽  
pp. F1112-F1116 ◽  
Author(s):  
Junning Wen ◽  
Dechun Si ◽  
Shangshang Wang ◽  
Han Ding ◽  
Chaoming Li ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Bipolar Plate ◽  
Proton Exchange ◽  
Start Up ◽  
Hydrogen Pump ◽  
Exchange Membrane

scholarly journals Sputter-deposited Films from Ti-Ni Target and NaCl Substrate Prepared by Pulsed-current Sintering.

2007 ◽  
Vol 54 (2) ◽  
pp. 107-111
Author(s):  
Keizo Kobayashi ◽  
Kimihiro Ozaki ◽  
Masashi Mikami ◽  
Yukio Ishikawa
Keyword(s):  
Pulsed Current ◽  
Sputter Deposited ◽  
Deposited Films

From –20 to 200 °C: Fuel Cells with Broad Operational Flexibility Enabled by Intrinsically Ultramicroporous Membranes

2021 ◽  
Author(s):  
Hongying Tang ◽  
Kang Geng ◽  
Lei Wu ◽  
Junjie Liu ◽  
Zhiquan Chen ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Operational Flexibility ◽  
Full Spectrum ◽  
Innovative Design ◽  
Temperature Range ◽  
Temperature Conditions ◽  
Start Up ◽  
Exchange Membrane

Abstract Conventional proton exchange membrane fuel cells (PEMFCs) operate at a narrow temperature range, either under low temperature conditions (80‒90°C) using fully-humidified perfluorosulfonic acid (Nafion®) membranes or under non-humidified high temperature conditions (140‒180°C) using phosphoric acid (PA)-doped membranes to avoid water condensation-induced PA leaching. To allow wide operational flexibility over the full spectrum of temperature and humidity ranges, we present an innovative design strategy by using PA-doped intrinsically ultramicroporous membranes constructed from rigid and contorted high free volume polymers. The membranes with an average ultramicropore radius of 3.3 Å showed a significant siphoning effect as confirmed by the delocalization of PA in 31P NMR, thus allowing high retention of PA even under highly humidified conditions and presenting more than three orders of magnitude higher proton conductivity retention than conventional dense PA-doped polybenzimidazole membranes (PBI/PA). The resulting PEMFCs display impressive performance over a much broader temperature range from − 20 to 200°C and can accomplish over 100 start-up/shut-down cycles even at − 20°C. The broad operational flexibility rendered from the high PA-retention can ultimately simplify heat and water management and thereby reduce PEMFC costs.

Sputter-deposited ultra-low catalyst loadings for PEM fuel cells

2005 ◽  
Vol 150 ◽  
pp. 67-72 ◽  
Author(s):  
D. Gruber ◽  
N. Ponath ◽  
J. Müller ◽  
F. Lindstaedt
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
Sputter Deposited

Reducing start-up time and minimizing energy losses of Microbial Fuel Cells using Maximum Power Point Tracking strategy

2014 ◽  
Vol 269 ◽  
pp. 403-411 ◽  
Author(s):  
Daniele Molognoni ◽  
Sebastià Puig ◽  
M. Dolors Balaguer ◽  
Alessandro Liberale ◽  
Andrea G. Capodaglio ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Maximum Power Point Tracking ◽  
Energy Losses ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Start Up ◽  
Power Point ◽  
Tracking Strategy

Fast start-up of a diesel fuel processor for PEM fuel cells

2014 ◽  
Vol 39 (31) ◽  
pp. 18154-18163 ◽  
Author(s):  
Marius Maximini ◽  
Philip Engelhardt ◽  
Martin Brenner ◽  
Frank Beckmann ◽  
Oliver Moritz
Keyword(s):  
Fuel Cells ◽  
Diesel Fuel ◽  
Pem Fuel Cells ◽  
Fuel Processor ◽  
Start Up ◽  
Fast Start
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