scholarly journals Microwave Assisted Reduction of Pt-Catalyst by N-Phenyl-p-Phenylenediamine for Proton Exchange Membrane Fuel Cells

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 104 ◽  
Author(s):  
Ming-Jer Tsai ◽  
Tar-Hwa Hsieh ◽  
Yen-Zen Wang ◽  
Ko-Shan Ho ◽  
Chia-Yun Chang
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Pt Catalyst ◽  
Microwave Assisted ◽  
Exchange Membrane

Optimizing Reduced Graphene Oxide with Metallic Nanoparticles for Increasing the Efficiency of Proton Exchange Membrane Fuel Cells

2014 ◽  
Vol 1735 ◽  
Author(s):  
Rebecca Isseroff ◽  
Arthur Chen ◽  
Lee Blackburn ◽  
Justin Lish ◽  
Long Tao Han ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cells ◽  
Reduced Graphene Oxide ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Pt Catalyst ◽  
Reduced Graphene ◽  
Metallic Salts ◽  
Partially Reduced Graphene Oxide ◽  
Exchange Membrane

ABSTRACTThe oxidation of CO to CO2 is necessary in the operation of Proton Exchange Membrane Fuel Cells (PEMFCs) since even a small amount of CO that is formed when the PEMFC is operated under ambient conditions is sufficient to poison the Pt catalyst in the electrodes and degrade the performance. Operation using higher loads of Pt catalysts or increasing the purity of the H2 input gas significantly adds to the cost, adversely impacting the commercial development of PEMFCs. We combined graphene oxide (GO) with metallic salts and partially reduced the mixture with sodium borohydride, yielding a metallized form of partially reduced graphene oxide (prGO) platelets that remained in solution. When these platelets were coated on the Nafion membrane of a PEMFC, a 72% increase in the power output was observed, whereas a 62% increase was observed when the membrane was coated with partially reduced graphene oxide without the metallic salts. Results will be presented for AuGO/prGO, PtGO/prGO, and AuPtGO/prGO combinations.

SnO2 nanocluster supported Pt catalyst with high stability for proton exchange membrane fuel cells

2013 ◽  
Vol 92 ◽  
pp. 468-473 ◽  
Author(s):  
Meiling Dou ◽  
Ming Hou ◽  
Dong Liang ◽  
Wangting Lu ◽  
Zhigang Shao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Stability ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Pt Catalyst ◽  
Exchange Membrane ◽  
Supported Pt Catalyst

Boosting cell performance with self-supported PtCu nanotube arrays serving as the cathode in a proton exchange membrane fuel cell

2020 ◽  
Vol 4 (7) ◽  
pp. 3640-3646
Author(s):  
Dewei Yao ◽  
Hongmei Yu ◽  
Wei Song ◽  
Xueqiang Gao ◽  
Zhixuan Fan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Cell Performance ◽  
Pt Catalyst ◽  
Nanotube Arrays ◽  
Exchange Membrane

The high cost and huge consumption of the Pt catalyst hinder the large-scale commercialization of fuel cells.

Carbon-riveted Pt catalyst supported on nanocapsule MWCNTs–Al2O3 with ultrahigh stability for high-temperature proton exchange membrane fuel cells

Nanoscale ◽  
2012 ◽  
Vol 4 (23) ◽  
pp. 7411 ◽  
Author(s):  
Zheng-Zhi Jiang ◽  
Zhen-Bo Wang ◽  
Wei-Li Qu ◽  
Harry Rivera ◽  
Da-Ming Gu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Pt Catalyst ◽  
Exchange Membrane

Highly proton conductive membranes based on carboxylated cellulose nanofibres and their performance in proton exchange membrane fuel cells

2019 ◽  
Author(s):  
Valentina Guccini ◽  
Annika Carlson ◽  
Shun Yu ◽  
Göran Lindbergh ◽  
Rakel Wreland Lindström ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Surface Charge ◽  
Proton Exchange Membrane ◽  
Membrane Surface ◽  
Proton Exchange ◽  
Membrane Thickness ◽  
Fuel Cell Performance ◽  
Cellulose Nanofibres ◽  
Exchange Membrane

The performance of thin carboxylated cellulose nanofiber-based (CNF) membranes as proton exchange membranes in fuel cells has been measured in-situ as a function of CNF surface charge density (600 and 1550 µmol g<sup>-1</sup>), counterion (H<sup>+</sup>or Na<sup>+</sup>), membrane thickness and fuel cell relative humidity (RH 55 to 95 %). The structural evolution of the membranes as a function of RH as measured by Small Angle X-ray scattering shows that water channels are formed only above 75 % RH. The amount of absorbed water was shown to depend on the membrane surface charge and counter ions (Na<sup>+</sup>or H<sup>+</sup>). The high affinity of CNF for water and the high aspect ratio of the nanofibers, together with a well-defined and homogenous membrane structure, ensures a proton conductivity exceeding 1 mS cm<sup>-1</sup>at 30 °C between 65 and 95 % RH. This is two orders of magnitude larger than previously reported values for cellulose materials and only one order of magnitude lower than Nafion 212. Moreover, the CNF membranes are characterized by a lower hydrogen crossover than Nafion, despite being ≈ 30 % thinner. Thanks to their environmental compatibility and promising fuel cell performance the CNF membranes should be considered for new generation proton exchange membrane fuel cells.<br>

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