Fuel Cells II

The concept to utilize an ion-conducting polymer membrane as a solid po- mer electrolyte offers several advantages regarding the design and operation of an electrochemical cell, as outlined in Volume 215, Chapter 1 (L. Gubler, G.G. Scherer). Essentially, the solvent and/or transport medium, e.g., H O, 2 + for the mobile ionic species, e.g., H for a cation exchange membrane, is taken up by and con?ned into the nano-dimensional morphology of the i- containingdomainsofthepolymer.Asaconsequence, aphaseseparationinto a hydrophilic ion-containing solvent phase and a hydrophobic polymer ba- bone phase establishes. Because of the narrow solid electrolyte gap in these cells, low ohmic losses reducing the overall cell voltage can be achieved, even at highcurrent densities. This concept was applied to fuel cell technology at a very early stage; h- ever, performance and reliability of the cells were low due to the dissatisfying membrane properties at that time. The development of per?uoro sulfonate and carboxylate-type membranes, in particular for the chlor-alkali process, directly fostered the further development of proton-conducting membranes and, as a consequence, also the progress in this type of fuel cell technology (polymer electrolyte fuel cell,PEFC).

Sommario

Sulfonated Aromatic Polymers for Fuel Cell Membranes.- Polybenzimidazole/Acid Complexes as High-Temperature Membranes.- Proton-Conducting Polymers and Membranes Carrying Phosphonic Acid Groups.- Polyphosphazene Membranes for Fuel Cells.- Sulfonated Polyimides.

Riassunto

See table of contents

Dettagli sul prodotto

• Con la collaborazione di: Günthe G Scherer (Editore), Günther G Scherer (Editore), Günther G. Scherer (Editore)
• Editore: Springer, Berlin
• Lingue: Inglese
• Formato: Tascabile
• Pubblicazione: 06.10.2010
• EAN: 9783642089152
• ISBN: 978-3-642-08915-2
• Pagine: 261
• Illustrazioni: XIV, 261 p.
• Serie: Advances in Polymer Science; Advances in Polymer Science
• Categorie: Scienze naturali, medicina, informatica, tecnica > Tecnica > Meccanica, tecnica di produzione; C, Electrical Engineering, Chemistry and Materials Science, energy storage, polymers, electrochemistry, Polymer Sciences, Materials / States of matter, Materials science, Materials Science, general, Power electronics, Electrical Power Engineering, Power Electronics, Electrical Machines and Networks, Mechanical and Thermal Energy Storage, Energy, power generation, distribution & storage, Electrochemistry & magnetochemistry, Amorphous substances, Soft and Granular Matter, Complex Fluids and Microfluidics, Complex fluids