Conventional Al–air battery vs. constructed Al–air battery using the oil displacement method.
 Displacing oils and separators must display underwater oleophobicity for the oil displacement method to appropriately operate.
 Corrosion of aluminum submerged in electrolyte vs. the corrosion of aluminum covered in a layer of oil surrounded by electrolyte. The aluminum continues to corrode when covered in oil at a low rate because a small concentration of electrolyte can diffuse through the oil.
 3D-printed Al–air prototype using the oil displacement method.
 Exploded view of Al–air prototype.
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