This paper presents a two-dimensional computational model of micro-structured cathodic electrodes featuring nano-porous gas diffusion media that increase the surface to volume ratio of the deposited catalyst layer. A key objective of the modeling effort is to elucidate the Knudsen diffusion within the nano-porous electrode. In addition, the model is non-isothermal and resolves the natural conve...

Clay as a dispersion agent in anode catalyst layer for PEMFC Yi-Hao Pai a, Jyh-Harng Ke b, Chih-Cheng Chou c, Jiang-Jen Lin d, Jyh-Myng Zen b,∗, Fuh-Sheng Shieu a,∗ a Department of Materials Engineering, National Chung Hsing University, Taichung 40227, Taiwan b Department of Chemistry, National Chung Hsing University, Taichung 40227, Taiwan c Department of Chemical Engineering, National Chung H...

A novel dynamic covalent gel strategy is reported to immobilize an asymmetric catalyst within the channels of a microfluidic flow reactor. A layer of a catalytically active Mn–salen dynamic covalent imine gel matrix was coated onto a functionalized capillary. Mn–salen active moiety was incorporated into dynamic covalent imine gel matrix via the reaction of a chiral Mn–salen dialdehyde unit with...

To improve the contact between platinum catalyst and titanium substrate, a layer of TiO 2 nanotube arrays has been synthesized before depositing Pt nanoflowers by pulse electrodeposition. Dramatic improvements in electrocatalytic activity (3×) and stability (60×) for methanol oxidation were found, suggesting promising applications in direct methanol fuel cells. The 3× and 60× improvements persi...

8 ABSTRACT: In most envisioned applications, the full 9 utilization of a graphene-carbon nanotube (CNT) construct 10 requires maintaining the integrity of the graphene layer during 11 the CNT growth step. In this work, we exhibit an approach 12 toward controlled CNT growth atop graphene substrates 13 where the reaction equilibrium between the source hydro14 carbon decomposition and carbon satur...

Solid oxide fuel cells with atomic layer-deposited thin film electrolytes supported on anodic aluminum oxide (AAO) are electrochemically characterized with varying thickness of bottom electrode catalyst (BEC); BECs which are 0.5 and 4 times thicker than the size of AAO pores are tested. The thicker BEC ensures far more active mass transport on the BEC side and resultantly the thicker BEC cell g...

A novel dynamic covalent gel strategy is reported to immobilize an asymmetric catalyst within the channels of a microfluidic flow reactor. A layer of a catalytically active Mn-salen dynamic covalent imine gel matrix was coated onto a functionalized capillary. Mn-salen active moiety was incorporated into dynamic covalent imine gel matrix via the reaction of a chiral Mn-salen dialdehyde unit with...

The optimized hydrocarbon catalyst layer enables high performance in higher potentials (0.7 V) and peak power density under hot dry operation conditions.

Rights: © 2011 Elsevier BV. This is the post print version of the following article: Miettunen, Kati & Toivola, Minna & Hashmi, Ghufran & Salpakari, Jyri & Asghar, Imran & Lund, Peter. 2011. A carbon gel catalyst layer for the roll-to-roll production of dye solar cells. Carbon. Volume 49, Issue 2. 528-532. ISSN 0008-6223 (printed). DOI: 10.1016/j.carbon.2010.09.05 which has been published in fi...