78 research outputs found
Hapniku elektrokeemiline redutseerumine N-dopeeritud grafeenil ja N-dopeeritud süsiniknanotorudel leeliselises keskkonnas
High oxygen reduction activity of few-walled carbon nanotubes with low nitrogen content
Highly active nitrogen-doped nanocarbon electrocatalysts for alkaline direct methanol fuel cell
Direct methanol fuel cells are assembled and evaluated using Fumatech FAA3 alkaline anion exchange membrane. Two novel metal-free cathode catalysts are synthesised, investigated and compared with the commercial Pt-based catalyst. In this work nitrogen-doped few-layer graphene/multi-walled carbon nanotube (N-FLG/MWCNT) composite and nitrogen-doped MWCNT (N-MWCNT) catalyst are prepared by pyrolysing the mixture of dicyandiamide (DCDA) and carbon nanomaterials at 800 °C. The resulting cathode catalyst material shows a remarkable electrocatalytic activity for oxygen reduction reaction (ORR) in 0.1 M KOH solution employing the rotating disk electrode (RDE) method. Fuel cell tests are performed by using 1 M methanol as anode and pure oxygen gas cathode feed. The maximum power density obtained with the N-FLG/MWCNT material (0.72 mW cm−2) is similar to that of the Pt/C catalyst (0.72 mW cm−2), whereas the N-MWCNT material shows higher peak power density (0.92 mW cm−2) than the commercial Pt/C catalyst.Peer reviewe
Mixed Transition Metal Oxide Supported on Nitrogen Doped Carbon Nanotubes - a Simple Bifunctional Electrocatalyst Studied with Scanning Electrochemical Microscopy
Oxygen Reduction on Anthraquinone Diazonium Compound Derivatised Multi-walled Carbon Nanotube and Graphene Based Electrodes
Cobalt-Containing Nitrogen-Doped Carbon Aerogels as Efficient Electrocatalysts for the Oxygen Reduction Reaction
Enhanced oxygen reduction reaction activity of nitrogen-doped graphene/multi-walled carbon nanotube catalysts in alkaline media
Free-standing nitrogen-doped carbon nanotubes at electrospun carbon nanofibers composite as an efficient electrocatalyst for oxygen reduction
One-Pot Synthesis of Cobalt-Incorporated Nitrogen-Doped Reduced Graphene Oxide as an Oxygen Reduction Reaction Catalyst in Alkaline Medium
Graphitic carbon nitrides supported by nitrogen-doped graphene as efficient metal-free electrocatalysts for oxygen reduction
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