High-temperature proton-exchange as an efficient method for fabrication of low-loss LiNbO3 waveguides

2000 ◽  
Author(s):  
Yuri N. Korkishko ◽  
Vyacheslav A. Fedorov ◽  
Oksana Y. Feoktistova ◽  
Evgueni A. Baranov ◽  
Eugeny M. Paderin
Keyword(s):  
High Temperature ◽  
Efficient Method ◽  
Proton Exchange ◽  
Low Loss

Low-loss TM-pass polariser fabricated by proton exchange forz-cut ti:LiNbO3waveguides

1987 ◽  
Vol 23 (1) ◽  
pp. 29-31 ◽  
Author(s):  
J.J. Veselka ◽  
G.A. Bogert
Keyword(s):  
Proton Exchange ◽  
Low Loss

scholarly journals Bi-Functional Composting the Sulfonic Acid Based Proton Exchange Membrane for High Temperature Fuel Cell Application

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1000
Author(s):  
Guoxiao Xu ◽  
Juan Zou ◽  
Zhu Guo ◽  
Jing Li ◽  
Liying Ma ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Composite Membrane ◽  
Sulfonic Acid ◽  
Elevated Temperatures ◽  
Mechanical Stability ◽  
Strong Dependence ◽  
Proton Exchange ◽  
Nafion Membrane ◽  
Silica Nanofiber

Although sulfonic acid (SA)-based proton-exchange membranes (PEMs) dominate fuel cell applications at low temperature, while sulfonation on polymers would strongly decay the mechanical stability limit the applicable at elevated temperatures due to the strong dependence of proton conduction of SA on water. For the purpose of bifunctionally improving mechanical property and high-temperature performance, Nafion membrane, which is a commercial SA-based PEM, is composited with fabricated silica nanofibers with a three-dimensional network structure via electrospinning by considering the excellent water retention capacity of silica. The proton conductivity of the silica nanofiber–Nafion composite membrane at 110 °C is therefore almost doubled compared with that of a pristine Nafion membrane, while the mechanical stability of the composite Nafion membrane is enhanced by 44%. As a result, the fuel cell performance of the silica nanofiber-Nafion composite membrane measured at high temperature and low humidity is improved by 38%.

Submicro-pore containing poly(ether sulfones)/polyvinylpyrrolidone membranes for high-temperature fuel cell applications

2015 ◽  
Vol 3 (16) ◽  
pp. 8847-8854 ◽  
Author(s):  
Zhibin Guo ◽  
Ruijie Xiu ◽  
Shanfu Lu ◽  
Xin Xu ◽  
Shichun Yang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane

A novel submicro-pore containing proton exchange membrane is designed and fabricated for application in high-temperature fuel cells.

A high performance polybenzimidazole–CNT hybrid electrode for high-temperature proton exchange membrane fuel cells

2014 ◽  
Vol 2 (19) ◽  
pp. 7015-7019 ◽  
Author(s):  
He-Yun Du ◽  
Chen-Hao Wang ◽  
Chen-Shuan Yang ◽  
Hsin-Cheng Hsu ◽  
Sun-Tang Chang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
Electrochemical Activity ◽  
Proton Exchange ◽  
Exchange Membrane

A well-controlled Pt/PBI–CNT electrode provides not only good interfacial continuity but also numerous edge planes, which has strong electrochemical activity in HT-PEMFCs.

Novel Proton Exchange Membrane for High Temperature Fuel Cells

1997 ◽  
Vol 496 ◽  
Author(s):  
M. Bhamidipati ◽  
E. Lazaro ◽  
F. Lyons ◽  
R. S. Morris
Keyword(s):  
Thermal Stability ◽  
Fuel Cells ◽  
High Temperature ◽  
Electrochemical Performance ◽  
Proton Exchange Membrane ◽  
Research Effort ◽  
Analysis Data ◽  
Proton Exchange ◽  
Temperature Conductivity ◽  
Exchange Membrane

ABSTRACTThis research effort sought to demonstrate that combining select phosphonic acid additives with Nafion could improve Nafion's high temperature electrochemical performance. A 1:1 mixture of the additive with Nafion, resulted in a film that demonstrated 30% higher conductivity than a phosphoric acid equilibrated Nafion control at 175°C. This improvement to the high temperature conductivity of the proton exchange membrane Nafion is without precedent. In addition, thermal analysis data of the test films suggested that the additives did not compromise the thermal stability of Nafion. The results suggest that the improved Nafion proton exchange membranes could offer superior electrochemical performance, but would retain the same degree of thermal stability as Nafion. This research could eventually lead to portable fuel cells that could oxidize unrefined hydrocarbon fuels, resulting in wider proliferation of fuel cells for portable power.

High-temperature proton-exchange membranes based on polymer-acid complexes

2006 ◽  
Vol 48 (3) ◽  
pp. 144-151 ◽  
Author(s):  
A. Yu. Leikin ◽  
E. G. Bulycheva ◽  
A. L. Rusanov ◽  
D. Yu. Likhachev
Keyword(s):  
High Temperature ◽  
Proton Exchange Membranes ◽  
Proton Exchange
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