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Bio-analogue Amino Acid-Based Proton-Conduction Wires for Fuel Cell Membranes
- Source :
- The Journal of Physical Chemistry C. 112:2756-2763
- Publication Year :
- 2008
- Publisher :
- American Chemical Society (ACS), 2008.
-
Abstract
- In contrast to still inefficient and expensive technical proton-conducting membranes, which rely on sulfonic acid activity, biology has solved its energy-related proton-conduction problems by evolving protein-bordered channels exposing amino acids for proton conduction (bacteriorhodopsin, CF0-channel of ATP-synthase, cytochrome oxidase complex). In this contribution, amino acids (l-lysine, aspartic acid, methionin) were attached to silica nanoparticles, which were incorporated into narrow (100−400 nm) channels produced in proton-inactive membranes (polyethlyene terephthalate, polycarbonate) forming nanowire structures for protons. The amino acid-modified porous membranes were shown to function in a real fuel cell setup with energy conversion efficiencies, corrected for the pore densities, approaching those of state-of-the-art fuel cell membranes. The dependence of proton-conduction properties of these channels on different parameters was studied. Further development of proton-conduction channels lined or ...
- Subjects :
- chemistry.chemical_classification
Proton
biology
Inorganic chemistry
Nanowire
Bacteriorhodopsin
Sulfonic acid
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Amino acid
General Energy
Membrane
chemistry
visual_art
Aspartic acid
biology.protein
visual_art.visual_art_medium
Physical and Theoretical Chemistry
Polycarbonate
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 112
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi...........2e7d02c26d2d56d813825f865b7da6ce