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Plasmachemische Erzeugung von Metall-Polypyrrol-Katalysatoren für die Sauerstoffreduktion in Brennstoffzellen

  • Diese Dissertation beschäftigt sich mit der Erzeugung von edelmetallfreien Katalysatoren für die Sauerstoffreduktion in Brennstoffzellen. Dabei wird ein neuartiger, dualer Plasmaprozess entwickelt, aufgebaut und die so-erzeugten Schichten mit verschiedenen elektrochemischen (CV, RDE und RRDE) und strukturanalytischen Methoden (SEM, EDX, IR, XPS, Leitfähigkeit, XRD, NEXAFS, EXAFS und TEM) untersucht. Auf diese Weise ist es erstmalig gelungen edelmetallfreie Katalysatoren mit einem Plasmaprozess herzustellen, ohne dass eine zusätzliche Pyrolyse benötigt wird. Die katalytische Aktivität der Schichten ist außerdem deutlich höher als die von rein chemisch hergestellten Metall–Polypyrrol-Schichten.
  • This thesis is about the production of non noble metal catalysts for the oxygen reduction reaction in fuel cells. Therefore, a novel dual plasma process is developed, constructed and the so-produced films are analysed by various electrochemical (CV, RDE and RRDE) and structural methods (SEM, EDX, IR, XPS, conductivity, XRD, NEXAFS, EXAFS and TEM). It is shown, that by doing this, non noble metal catalysts could be produced without the need of a high temperature treatment. Furthermore, the catalytic activity obtained is superior to that of chemically produced metal-polypyrrole films.

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Metadaten
Author: Christian Walter
URN:urn:nbn:de:gbv:9-001514-2
Title Additional (English):Using a dual plasma process to produce metal-polypyrrole catalysts for the oxygen reduction in fuel cells
Advisor:Prof. Dr. Holger Kersten, Prof. Dr. Klaus-Dieter Weltmann
Document Type:Doctoral Thesis
Language:German
Date of Publication (online):2013/06/28
Granting Institution:Ernst-Moritz-Arndt-Universität, Mathematisch-Naturwissenschaftliche Fakultät (bis 31.05.2018)
Date of final exam:2013/02/07
Release Date:2013/06/28
Tag:Eisen-Polypyrrol, Kobalt-Polypyrrol, Metall-Polymer Verbindungen, edelmetallfreie Katalysatoren
cobalt-polypyrrole, iron-polypyrrole, metal polymer structures, non noble metal catalysts
GND Keyword:Brennstoffzelle, Katalysator, PECVD, PVD, Plasmaphysik
Faculties:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik
DDC class:500 Naturwissenschaften und Mathematik / 530 Physik
PACS-Classification:50.00.00 PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES / 52.00.00 Physics of plasmas and electric discharges (for space plasma physics, see 94.05.-a; for astrophysical plasmas, see 95.30.Qd; for physics of the ionosphere and magnetosphere, see 94.20.-y and 94.30.-d respectively) / 52.77.-j Plasma applications / 52.77.Dq Plasma-based ion implantation and deposition (see also 81.15.Jj Ion and electron beam-assisted deposition)
50.00.00 PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES / 52.00.00 Physics of plasmas and electric discharges (for space plasma physics, see 94.05.-a; for astrophysical plasmas, see 95.30.Qd; for physics of the ionosphere and magnetosphere, see 94.20.-y and 94.30.-d respectively) / 52.80.-s Electric discharges (see also 51.50.+v Electrical properties of gases; for plasma reactions including flowing afterglow and electric discharges, see 82.33.Xj in physical chemistry and chemical physics) / 52.80.Pi High-frequency and RF discharges
60.00.00 CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES / 61.00.00 Structure of solids and liquids; crystallography (for surface, interface, and thin film structure, see section 68) / 61.05.-a Techniques for structure determination; Microscopy of surfaces, interfaces, and thin films, see 68.37.-d / 61.05.C- X-ray diffraction and scattering (for x-ray diffractometers, see 07.85.Jy; for x-ray studies of crystal defects, see 61.72.Dd, Ff) / 61.05.cj X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc. (for x-ray and EXAFS applications in biological physics, see 87.64.kd)
80.00.00 INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY / 82.00.00 Physical chemistry and chemical physics; Electronic structure theory of atoms and molecules, see 31.15.-p; Electronic structure theory of condensed matter, see section 71; Electronic structure theory for biomolecules, see 87.10.-e; Electronic structure of / 82.47.-a Applied electrochemistry / 82.47.Gh Proton exchange membrane (PEM) fuel cells