Combined local current distribution measurements and high resolution neutron radiography of operating Direct Methanol Fuel Cells

A Novel Structural Design of a Pt/C‐CeO2 Catalyst with Improved Performance for Methanol Electro‐Oxidation by β‐Cyclodextrin Carbonization

“…Recently, many researchers have investigated the CeO 2 as a co-catalyst for methanol or other alcohol oxidation, [ 36,37 ] but very few papers have focused on the structural design of CeO 2 -based catalysts to enhance the electron conduction and synergistic effect. Xia [ 38 ] and co-workers synthesized the Pt/CeO 2 hybrid nanostructure catalyst in the aqueous phase through electrostatic attraction between negatively charged PtCl 4 2-precursors and the positively charged surface of 6-aminohexanoic acid (AHA)-stabilized CeO 2 nanocrystals, and it exhibited a higher resistance to poisoning during the catalytic reduction of p -nitrophenol into p -aminophenol by NaBH 4 . Wang [ 39 ] and co-workers used the quaternary ammonium polyelectrolyte diallyldimethylammonium chloride (PDDA) to achieve Pt nanoparticles adsorbed on PDDA-coated CNTs and contact with CeO 2 , which is benefi cial for methanol electro-oxidation, but the process required multiple steps including removal of stabilizers or the polyelectrolyte.…”

Nano-morphology of a polymer electrolyte fuel cell catalyst layer—imaging, reconstruction and analysis

“…For the flow fields, a simple CCD camera can be used to investigate two-phase transport [1]. X-ray analysis and neutron radiography have also been used for this purpose [2,3]. In the gas diffusion layer, X-ray tomography has been used to image three-dimensional water distributions [4].…”

Investigation of Energy‐Relevant Materials with Synchrotron X‐Rays and Neutrons

“…In recent years, neutron radiography, [81][82][83][84][85][86][87][88][89][90][91][92][93][94][95] magnetic resonance imaging, [96,97] and X-ray imaging [98][99][100][101][102][103][104][105][106] have been successfully applied to visualize liquid water flow in fuel cells. Magnetic resonance imaging is only suited for very small cells, which must be made of non-metallic materials and contain catalysts with a reduced Pt-load in order to prevent strong image artifacts.…”