Carbon nanotubes as a support for Pt-and Pt-Ru-catalysts of reactions proceeding in fuel cells

Structural and wetting properties of fuel cell components

“…[44,45] it was found that the specific catalytic activity of deposited platinum catalysts (referred to a unit of the working surface) does not depend on the nature and properties of the support. But it must be noted that on SWCNT f with 5-10 g cm −2 of platinum deposits it is possible to achieve values of the working surface up to 300 m 2 g −1 and thus very high overall current densities.…”

“…[44,45] the porous structure and wetting properties of single walled carbon nanotubes (SWCNTs) and the structure and properties of Pt and Pt/Ru deposits on them were investigated by MCSP. The SWCNTs were synthesized by an electric arc method.…”

A comparative study of the electrochemical properties of carbon nanotubes and carbon black

“…Electrochemical properties of carbon nanotubes were widely investigated [6,9,13,[16][17][18][19][20][21], as well as their application in fuel cells [12,[22][23][24][25] and in supercapacitors [26][27][28]. However, the results are not quite consistent.…”

“…Regarding fuel cell technology, CNTs appear to be more resistant to electrochemical degradation than carbon black [30,31], but there is controversy about its possible role in electrocatalytic reactions. Although noble metal catalysts supported on CNTs were found to be more active for methanol oxidation than the catalysts supported on other high area carbons [12,22,24], a recent study reported that the carbon support has no influence on the electrocatalysts activity for methanol oxidation and oxygen reduction [25]. The purpose of this study was to reveal specificity of carbon nanotubes and their possible advantages over carbon blacks regarding the application in electrochemical systems.…”

Synthesis and evaluation of ATO as a support for Pt–IrO2 in a unitized regenerative fuel cell

“…These suboxides are the main conductive compounds in a homologous series of crystallographic shear structures with the general formula Ti n O 2nÀ1 (4 n 10), known as the Magneli phase [30]. Recent studies have shown the potential use of this material as a catalyst support for the OER and the ORR [31e33]; however, this material has low surface area (1.7 m 2 g À1 ) compared with Vulcan XC-72 (205 m 2 g À1 ) [32,34].…”