List of used symbols
CNC	Carbon nanocages
CNT	Carbon nanotubes
COads	Adsorbed carbon oxide intermediates
DAFC	Direct alcohol fuel cell
DMFC	Direct methanol fuel cell
ECSA	Electrochemically active surface
EGr	Exfoliated graphite
EG	Ethylene glycol
EGOR	Ethylene glycol oxidation reaction
ESA	Electrode surface area
EOR	Ethanol oxidation reaction
GC	Glassy carbon
GNS	Graphene nanosheets
MOR	Methanol oxidation reaction
MWCNT	Multi-walled carbon nanotubes
OHads	Adsorbed hydroxide ions
OCP	open-circuit potential
PEM	Proton-exchange membrane
PEMFC	Proton-exchange membrane fuel cell
rGO	Reduced graphene oxide
RHE	Reversible hydrogen electrode
SEM	Scanning electron microscope
TEM	Transmission electron microscope