Filtern
Erscheinungsjahr
- 2016 (179) (entfernen)
Dokumenttyp
- Wissenschaftlicher Artikel (67)
- Konferenzveröffentlichung (27)
- Teil eines Buches (Kapitel) (26)
- Beitrag zu einer (nichtwissenschaftlichen) Zeitung oder Zeitschrift (18)
- Buch (Monographie) (16)
- Lehrmaterial (11)
- Rezension (6)
- Bericht (4)
- Arbeitspapier (2)
- Video (1)
- Sonstiges (1)
Sprache
- Deutsch (134)
- Englisch (43)
- Mehrsprachig (1)
- Rumänisch (1)
Schlagworte
- Bionik (2)
- Empirische Methoden (2)
- Energiepolitik (2)
- Erneuerbare Energien (2)
- Fachjournalismus (2)
- Gespenstschrecken (2)
- Haftorgan (2)
- Kommunikationswissenschaft (2)
- Rechtswissenschaft (2)
- Wissenschaftliches Arbeiten (2)
- adhesion (2)
- open quantum systems (2)
- stick insects (2)
- carbon nanofibers, platinum electrodeposition, ele ctrochemical surface area (1)
- Besondere Ausgleichsregelung (1)
- Betriebswirtschaft (1)
- Biomedical monitoring, Hospitals, Electrocardiography, Wireless communication, Patient monitoring, Wireless sensor networks (1)
- Biomimetics (1)
- Branding (1)
- CRM (1)
- Cavitation; Corrosion; Laser remelting; Self-fluxing alloys; Stellite 6 (1)
- Compliance (1)
- Corporate Governance (1)
- Corporate Governance Codex (1)
- Crowdfunding (1)
- Data Collection (1)
- Datenanalyse (1)
- Deutscher Aktienindex (1)
- Emissionshandel (1)
- Ethik (1)
- Europe (1)
- Gehirn & Computer (1)
- Geldpolitik (1)
- Geldschöpfung (1)
- Handelsbilanz (1)
- Hochschuldidaktik (1)
- Hydraulic compression, Carbon Nano Fibers, PEM Fuel Cells, Catalyst utilization (1)
- Journalismus (1)
- Juristisches Studium (1)
- Kapitalverkehrsbilanz (1)
- Korruption (1)
- Kundenmanagement (1)
- Künstliche Intelligenz (1)
- Mapping (1)
- Maschinenintelligenz (1)
- Mathematische Ausdrücke (1)
- Medienforschung (1)
- Menschheitsentwicklung (1)
- Methodology (1)
- Middle-range Theory (1)
- Mittelstand (1)
- Negativzins (1)
- PEM fuel cell electrocatalysts, Carbon nanofibers, Oxygen plasma activation, Pulsed electroplating. (1)
- PEM fuel cells; electrode preparation; carbon nanofibers; in-situ performance test (1)
- Projektabwicklung (1)
- Redaktion (1)
- Schuldrecht (1)
- Social Innovation (1)
- Stellite 6; HVOF-spraying; Laser remelting; Cavitation erosion; Coatings (1)
- Supercomputer (1)
- Vertrag (1)
- Vertragsrecht (1)
- Wachstum (1)
- Wechselkurs (1)
- Wertschöpfungsrechnung (1)
- Wirtschaft (1)
- biomimicry (1)
- carbon nanofibers, platinum electrodeposition, electrocatalysts (1)
- conical intersection (1)
- demagnetization cooling (1)
- didaktische Qualifizierung (1)
- ethics (1)
- expert interviews (1)
- international comparative study (1)
- mathematical expressions (1)
- media accountability (1)
- nonadiabatic dynamics (1)
- nonequilibrium quantum transport (1)
- offene Volkswirtschaft (1)
- role identity (1)
- social innovation (1)
- theorising (1)
- watchblogs (1)
- Überschussliquidität (1)
Institut
- Wirtschaftsrecht (82)
- Informatik und Kommunikation (22)
- Institut für Internetsicherheit (14)
- Westfälisches Institut für Gesundheit (13)
- Strategische Projekte (9)
- Westfälisches Energieinstitut (9)
- Wirtschaft und Informationstechnik Bocholt (8)
- Elektrotechnik und angewandte Naturwissenschaften (5)
- Institut für Innovationsforschung und -management (4)
- Maschinenbau Bocholt (3)
In the polymer electrolyte membrane fuel cells (PEMFC) state of the art, rare and expensive platinum group metals (PGM) or PGM alloys are used as catalyst material. Reduction of PGMs in PEMFC electrodes is strongly required to reach cost targets for this technology. An optimal catalyst utilization is achieved in case of nano-structured particles supported on carbon material with a large specific surface area. In this study, graphitic material, in form of carbon nanofibers (CNF), is decorated with Pt particles, serving as catalyst material for PEMFC electrodes with low Pt loading. As a novelty, the effect of oxygen plasma treatment of CNFs previously to platinum particle deposition has been studied. Electrodes are investigated in respect of the optimal morphology, microstructure as well as electrochemical properties. Therefore, samples are characterized by means of scanning electron microscopy combined with energy dispersive X-ray analysis, transmission electron microscopy, thermogravimetry, X-ray diffraction as well as X-ray fluorescence analysis. In order to determine the electrochemical active surface area of catalyst particles, cyclic voltammetry has been performed in 0.5 M sulphuric acid. Selected samples have been investigated in a PEMFC test bench according to their polarization behavior.