scholarly journals Ceria nanorods as highly stable free radical scavengers for highly durable proton exchange membranes

RSC Advances ◽  
2021 ◽  
Vol 11 (51) ◽  
pp. 32012-32021
Author(s):  
Rui Zhiyan ◽  
Li Qingbing ◽  
Huo Youxiu ◽  
Ding Rui ◽  
Liu Jia ◽  
...  
Keyword(s):  
Free Radical ◽  
High Stability ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Free Radical Scavengers ◽  
Radical Scavengers ◽  
Stable Free Radical ◽  
Exchange Membrane

Morphology regulation induced high stability of ceria in proton exchange membrane.

scholarly journals Pore-Filled Proton-Exchange Membranes with Fluorinated Moiety for Fuel Cell Application

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4433
Author(s):  
Hyeon-Bee Song ◽  
Jong-Hyeok Park ◽  
Jin-Soo Park ◽  
Moon-Sung Kang
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Continuous Process ◽  
Oxidation Stability ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Cross Linking ◽  
Polymer Backbone ◽  
Transfer Resistance ◽  
Exchange Membrane

Proton-exchange membrane fuel cells (PEMFCs) are the heart of promising hydrogen-fueled electric vehicles, and should lower their price and further improve durability. Therefore, it is necessary to enhance the performances of the proton-exchange membrane (PEM), which is a key component of a PEMFC. In this study, novel pore-filled proton-exchange membranes (PFPEMs) were developed, in which a partially fluorinated ionomer with high cross-linking density is combined with a porous polytetrafluoroethylene (PTFE) substrate. By using a thin and tough porous PTFE substrate film, it was possible to easily fabricate a composite membrane possessing sufficient physical strength and low mass transfer resistance. Therefore, it was expected that the manufacturing method would be simple and suitable for a continuous process, thereby significantly reducing the membrane price. In addition, by using a tri-functional cross-linker, the cross-linking density was increased. The oxidation stability was greatly enhanced by introducing a fluorine moiety into the polymer backbone, and the compatibility with the perfluorinated ionomer binder was also improved. The prepared PFPEMs showed stable PEMFC performance (as maximum power density) equivalent to 72% of Nafion 212. It is noted that the conductivity of the PFPEMs corresponds to 58–63% of that of Nafion 212. Thus, it is expected that a higher fuel cell performance could be achieved when the membrane resistance is further lowered.

Obtaining Proton-Exchange Membranes of Fuel Cells from Natural Filling Agents to be Used for Vehicles

2018 ◽  
Vol 277 ◽  
pp. 241-250
Author(s):  
Olena Svietkina ◽  
Stanislav Bartashevskyi ◽  
Valeriy Nikolsky ◽  
Kostiantyn Bas ◽  
Peter Chlens ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Fuel Cells ◽  
Composite Materials ◽  
Proton Exchange Membrane ◽  
Membrane Conductance ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Travel Distance ◽  
Electric Locomotive ◽  
Exchange Membrane

Methods to increase travel distance of mine electric locomotive from one charging at the expense of fuel cells with proton-exchange membrane and to improve efficiency of the process as a result of using selective composite materials have been considered. It has been demonstrated that the use of activated natural materials will make it possible to increase membrane conductance up to 3.6·10−2Cm·cm−1; that will allow increasing energy-efficiency of fuel cells for their operation in terms of mine electric locomotives.

scholarly journals Amino-functionalized mesoporous silica based polyethersulfone–polyvinylpyrrolidone composite membranes for elevated temperature proton exchange membrane fuel cells

RSC Advances ◽  
2016 ◽  
Vol 6 (89) ◽  
pp. 86575-86585 ◽  
Author(s):  
Jin Zhang ◽  
Shanfu Lu ◽  
Haijin Zhu ◽  
Kongfa Chen ◽  
Yan Xiang ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Proton Exchange Membrane ◽  
State Of The Art ◽  
Composite Membranes ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
Functionalized Mesoporous Silica ◽  
High Proton ◽  
Exchange Membrane

It is important to find alternative membranes to the state-of-the-art polybenzimidazole based high temperature proton exchange membranes with high proton conductivity at elevated temperature but with simple synthesis procedures.

scholarly journals UV-crosslinked poly(arylene ether sulfone) – LAPONITE® nanocomposites for proton exchange membranes

RSC Advances ◽  
2017 ◽  
Vol 7 (45) ◽  
pp. 28358-28365 ◽  
Author(s):  
Sun Hwa Lee ◽  
Won Jun Lee ◽  
Tae Kyoung Kim ◽  
Mustafa K. Bayazit ◽  
Sang Ouk Kim ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Clay Nanocomposites ◽  
Arylene Ether ◽  
Exchange Membrane ◽  
Sulfonated Poly

UV-crosslinked sulfonated poly(arylene sulfone)/clay nanocomposites are fabricated by incorporating UV-crosslinkable monomers, bridge molecules, and clay nanofillers for high performance proton exchange membrane fuel cells.

Sb-Doped SnO2Supported Platinum Catalyst with High Stability for Proton Exchange Membrane Fuel Cells

2014 ◽  
Vol 161 (12) ◽  
pp. F1231-F1236 ◽  
Author(s):  
Meiling Dou ◽  
Ming Hou ◽  
Feng Wang ◽  
Dong Liang ◽  
Qing Zhao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Stability ◽  
Proton Exchange Membrane ◽  
Platinum Catalyst ◽  
Proton Exchange ◽  
Exchange Membrane

Functionalized mesoporous structured inorganic materials as high temperature proton exchange membranes for fuel cells

2014 ◽  
Vol 2 (21) ◽  
pp. 7637-7655 ◽  
Author(s):  
San Ping Jiang
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Mesoporous Silica ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Inorganic Materials ◽  
Nanocomposite Membranes ◽  
Functionalized Mesoporous Silica ◽  
Exchange Membrane

High temperature proton exchange membrane fuel cells based on functionalized mesoporous silica nanocomposite membranes.

Water Transport through Proton Exchange Membranes

2006 ◽  
Vol 15-17 ◽  
pp. 310-314
Author(s):  
Tatiana Romero-Castañon ◽  
W. Mérida
Keyword(s):  
Mass Spectrometry ◽  
Water Transport ◽  
Room Temperature ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Back Diffusion ◽  
Detection Rates ◽  
Catalyst Layers ◽  
Exchange Membrane

The presence of water within the polymeric ionic conductor and catalyst layers is indispensable for proton exchange membrane fuel cell (PEMFC) operation. The water transport within the membrane is always a balance between at least two competing mechanisms (water back-diffusion from the cathode to the anode, and electro-osmotic drag from the anode to the cathode). We present an experimental technique for the analysis of water transport within and through the membrane. Mass spectrometry was used to investigate diffusion and electro-osmotic drag in real time (detection rates < 100 ms). We present data on the net water transport resulting from the analysis at room temperature in Nafion115.

Investigation on the performance decay of proton exchange membrane basing on sulfonated heterocyclic poly(aryl ether ketone)s in Fenton’s reagent

2021 ◽  
Author(s):  
Qian Liu ◽  
Shouhai Zhang ◽  
Zhaoqi Wang ◽  
Jianhua Han ◽  
Ce Song ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Conduction ◽  
Proton Exchange ◽  
Aryl Ether ◽  
Potential Applications ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Exchange Membrane

Sulfonated N-heterocyclic poly(aryl ether)s proton exchange membranes have potential applications in the fuel-cell field for their favorable proton conduction capacity and stability. This paper investigates the changes in mass and...

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