AEM	Alkaline Exchange Membrane
AC	Alternating Current
CCM	Catalyst-Coated Membrane
CL	Catalyst Layer
DC	Direct Current
DCR	Resistance in Direct Current
DI	De-ionized [water]
DMD	Direct Membrane Deposition
GDE	Gas Diffusion Electrode
HFR	High-Frequency Resistance
IEC	Ion Exchange Capacity
IL	Interlayer
MEA	Membrane Electrode Assembly
PEM	Proton Exchange Membrane
Pt/C	Carbon-supported Platinum
TMA	Trimethylamine
TMHDA	N,N,N′,N′-tetramethyl-1,6-hexanediamine
X | Y	Assembly of pre-fabricated MEA sub-components X and Y, where ‘|’ represents the interface created at time of assembly