Operando electrochemical NMR microscopy of polymer fuel cells

2015 ◽  
Vol 8 (8) ◽  
pp. 2383-2388 ◽  
Author(s):  
A. S. Cattaneo ◽  
D. C. Villa ◽  
S. Angioni ◽  
C. Ferrara ◽  
R. Melzi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Nmr Microscopy ◽  
Electrochemical Devices

Electrochemical NMR microscopy is a breakthrough inoperandocharacterization of electrochemical devices, such as fuel cells and batteries.

scholarly journals Application of Electrospun Nanofibers for Fabrication of Versatile and Highly Efficient Electrochemical Devices: A Review

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1741
Author(s):  
Seyedeh Nooshin Banitaba ◽  
Andrea Ehrmann
Keyword(s):  
Solar Cells ◽  
Fuel Cells ◽  
Electrochemical Sensors ◽  
Electrospun Nanofibers ◽  
Electrical Energy ◽  
High Specific Surface Area ◽  
Large Space ◽  
Electrolytic Cells ◽  
Research Areas ◽  
Electrochemical Devices

Electrochemical devices convert chemical reactions into electrical energy or, vice versa, electricity into a chemical reaction. While batteries, fuel cells, supercapacitors, solar cells, and sensors belong to the galvanic cells based on the first reaction, electrolytic cells are based on the reversed process and used to decompose chemical compounds by electrolysis. Especially fuel cells, using an electrochemical reaction of hydrogen with an oxidizing agent to produce electricity, and electrolytic cells, e.g., used to split water into hydrogen and oxygen, are of high interest in the ongoing search for production and storage of renewable energies. This review sheds light on recent developments in the area of electrospun electrochemical devices, new materials, techniques, and applications. Starting with a brief introduction into electrospinning, recent research dealing with electrolytic cells, batteries, fuel cells, supercapacitors, electrochemical solar cells, and electrochemical sensors is presented. The paper concentrates on the advantages of electrospun nanofiber mats for these applications which are mostly based on their high specific surface area and the possibility to tailor morphology and material properties during the spinning and post-treatment processes. It is shown that several research areas dealing with electrospun parts of electrochemical devices have already reached a broad state-of-the-art, while other research areas have large space for future investigations.

Synthesis and characterization of novel functionalized perarylated polysiloxane for proton exchange membrane fuel cells

MRS Advances ◽  
2019 ◽  
Vol 4 (64) ◽  
pp. 3579-3585
Author(s):  
Guillermo M. González Guerra ◽  
Alejandro Alatorre-Ordaz ◽  
Gerardo González Garcia ◽  
Jesus S. Jaime-Ferrer
Keyword(s):  
Cyclic Voltammetry ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Area Under The Curve ◽  
Chlorosulfonic Acid ◽  
Proton Exchange ◽  
Synthesis And Characterization ◽  
A Value ◽  
Exchange Membrane

ABSTRACTThis work presents the synthesis and characterization of a pearylated polysiloxane material (PAP) from a polycondensation reaction, followed by functionalization with HClSO3 by an electrophilic substitution reaction. According to the characterization techniques applied, a sulfonated pearylated polysiloxane was also obtained, (SPAP). The purpose of this sulfonated material is to obtain an ionomer able to be applied in hydrogen fuel cells of the proton exchange membrane kind (PEMFC). The reaction to produce the polysiloxane precursor was carried out with the commercial reagents: PhSiCl3, Ph2SiCl2 and Ph3SiCl in anhydrous THF at 75 °C and the SPAP material was obtained by sulfonation of the precursor with chlorosulfonic acid. PAP and SPAP were characterized by 1H, NMR for liquids, 29Si NMR for solids, IR-ATR, SEM, and cyclic voltammetry. The NMR 29Si spectra show that PAP and PAPS contain crosslinking regions due to PhSiCl3, growing chain zones due to Ph2SiCl2 and polymer termination zones due to Ph3SiCl, obtaining a mixture of siloxanes. The analysis by cyclic voltammetry indicates that by integrating the area under the curve of the adsorption peaks of H2, a value of 0.062 mC/cm2 is obtained, a value close to the commercial ionomer of Nafion®.

Characterization of electroless Ni-based alloys for use in bipolar plates of direct methanol fuel cells

2010 ◽  
Vol 205 (7) ◽  
pp. 2251-2255 ◽  
Author(s):  
Jeng-Yu Lin ◽  
Che-Yu Lin ◽  
Shih-Kang Liu ◽  
Chi-Chao Wan ◽  
Yung-Yun Wang
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Bipolar Plates ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Electroless Ni

ChemInform Abstract: Characterization of Thin Films for Solid Oxide Fuel Cells Facilitated by Micropatterning

ChemInform ◽  
2012 ◽  
Vol 43 (26) ◽  
pp. no-no
Author(s):  
Thomas Ryll ◽  
Jennifer L. M. Rupp ◽  
Anja Bieberle-Hutter ◽  
Henning Galinski ◽  
Ludwig J. Gauckler
Keyword(s):  
Thin Films ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Abstract Characterization
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