The use of cheap polyaniline and melamine co-modified carbon nanotubes as active and stable catalysts for oxygen reduction reaction in alkaline medium

High content of pyridinic- and pyrrolic-nitrogen-modified carbon nanotubes derived from blood biomass for the electrocatalysis of oxygen reduction reaction in alkaline medium

“…According to Guo et al [39], BP350C1000, which derives from the copyrolysis of BP350 precursor and carbon black as a carbon support, exhibits the most positive E ORR of 0.90 V and E hw of 0.78 V, nearly identical to those of the Pt/C catalyst in a previous report [40]. At a mass loading of 50 mg cm À2 , the E ORR and E hw of N-CNT(800) is 0.91 V and 0.70 V respectively, nearly identical to that of BP350C1000 reported in Guo et al Moreover, the current density of N-CNT(800) is 3.4 mA cm À2 at 0.30 V and 2.1 mA cm À2 at 0.65 V, apparently higher than that of BP350C1000 (1.3 mA cm À2 at Table 2 XPS data for the N1s region of N-CNTs from Fig.…”

Efficient oxygen electroreduction over ordered mesoporous Co–N-doped carbon derived from cobalt porphyrin

“…A large number of efficient NPMCs with desired morphology and architecture have been investigated in the past decades. [2][3][4][5] Among numerous NPMCs reported, [6][7][8][9][10][11][12][13][14][15][16] carbonsupported iron-nitrogen (Fe-N/C) and cobalt-nitrogen catalysts (Co-N/C) are believed to be the most promising alternatives to the platinum-based catalysts, due to their excellent electrocatalytic performance towards the oxygen reduction reaction (ORR). [17][18][19][20] However, from a practical point of view, in harnessing the chemical energy via direct electrochemical conversion, their electrocatalytic activity and stability are still insufficient and need to be further improved.…”

Sphere‐and‐Flake‐Structured Cu, N Co‐Doped Carbon Catalyst Designed by a Template‐Free Method for Robust Oxygen Reduction Reaction

“…As further revealed in HRTEM image (Figure e), the carbon sphere is covered by an ultrathin carbon layer with thickness of 5 nm. To the best of our knowledge, this morphology is completely different from all the ORR catalysts which are derived from PANI and melamine ,,. Considering the effect of melamine additive on the morphology of material, GCNS5 and GCNS15 are synthesized and characterized via SEM.…”