AEM	Anion Exchange Membrane
AEMFCs	Anion Exchange Membrane Fuel Cells
AFCs	Alkaline Fuel Cells
BSSE	Basis set superposition error
DFT	Density Functional Theory
$\Delta E_{\mathrm{reaction}}$	Reaction energy
$\Delta E_{\mathrm{activation}}$	Activation energy
$\Delta E_{\mathrm{binding}}$	Binding energy
DMFCs	Direct Methanol Fuel Cells
EFCs	Enzymatic Fuel Cells
HL	Hydration level
${\mathrm{OH}}^{-}$	Hydroxide ion
LUMO	Lowest unoccupied molecular orbital
MCFCs	Molten Carbonate Fuel Cells
MD	Molecular dynamics
MSD	Mean square displacement
${\mathrm{S}}_{\mathrm{N}}2$	Nucleophilic substitution
PAFCs	Phosphoric Acid Fuel Cells
PCM	Polarizable continuum model
PEMFCs	Proton Exchange Membrane Fuel Cells
QCS	Quaternized chitosan
QA	Quaternary ammonium
RDF	Radial distribution function
SOFCs	Solid Oxide Fuel Cells