Towards nitrogen-containing CNTs for fuel cell electrodes

One-dimensional nitrogen-containing carbon nanostructures

“…Successful preparation of SWNCNTs by using the arc-discharge technique was also reported by Holzinger et al [40]. Laser ablation technique, known to be used for the fabrication of CNTs, was also rarely utilized in the production of NCNTs, e.g., vaporization of a C:Ni/Y The synthesis of NCNTs was frequently accomplished through the pyrolysis of acetonitrile (CH 3 CN) (Table 1) and its mixtures with various organic compounds (hydrocarbons, alcohols, and ethers) [48,53,54,78,79,89,[112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130] (Table 2 Tables 1 and 2). Mixtures of SWNCNTs, defective MWNCNTs, and bamboo-like NCNTs were grown by CVD varying the feedstock composition of CH 3 CN/ethanol mixtures and using ferric ammonium citrate/Al 2 O 3 /MgO as catalyst precursor [124].…”

Electroreduction of oxygen on nitrogen-doped carbon nanotube modified glassy carbon electrodes in acid and alkaline solutions

“…Thus, iron-nitrogen-carbon sites may be formed in a convenient way. Nevertheless, only recently nitrogen-containing carbon nanomaterials came into focus as potential catalysts for fuel cells [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. Gong and co-workers reported that NCNT arrays demonstrate high electrocatalytic activity for ORR in alkaline solution [19].…”

“…Nanotube carpets containing different amounts of nitrogen were grown through an aerosol CVD process on a silicon substrate and characterised, regarding the influence of the nitrogen content on the structural and electrochemical properties [32]. Functionalised vertically aligned carbon nanotubes (ACNTs) showed a unique nanoarchitecture and advantageous material properties for PEMFC cathodes [42].…”

Catalysis in Low‐Temperature Fuel Cells – An Overview

“…Recently, various papers have put forward the ideas of designing the GDEs by deliberately preparing nanostructured electrodes [98]. Recent ideas include the growth of aligned CNTs [58,99,100], which can also be branched [101], as shown schematically in Figure 15.6. It has been shown that such electrodes based on aligned CNTs indeed can be processed into a GDE for fuel cells [99].…”