Engineering & Materials Science
Diffusion in gases
97%
Platinum
90%
Proton exchange membrane fuel cells (PEMFC)
85%
Fuel cells
69%
Catalysts
65%
Hydrogen
61%
Multiwalled carbon nanotubes (MWCN)
58%
Single-walled carbon nanotubes (SWCN)
53%
Catalyst supports
51%
Nanotubes
49%
Surface morphology
43%
Carbon nanotubes
41%
Membranes
32%
Oxygen
31%
Electrodes
29%
Air
21%
Testing
20%
Physics & Astronomy
gaseous diffusion
100%
fuel cells
90%
catalysts
72%
carbon nanotubes
67%
membranes
57%
protons
50%
platinum
50%
hydrogen
31%
nanotubes
24%
performance
22%
surface layers
22%
assembly
22%
electrodes
16%
oxygen
15%
air
15%
characterization
14%
Chemical Compounds
Platinum
57%
Diffusion
48%
Gas
41%
Single Walled Nanotube
35%
Multi Walled Nanotube
32%
Catalyst
32%
Carbon Nanotube
28%
Pressure
22%
Behavior as Electrode
19%
Surface
12%