Electrical Double Layer based devices, College of Engineering

Immersing a metal (electrode) in a salt solution will spontaneously accumulate ions due to image charge to form the well known electrical double layer (EDL). Sign of the charge depends on the Fermi level (i.e., the electrochemical potential) difference between the metal and the solution. For example, gold will accumulate negative ions (i.e., anions). The interfacial structure

Electric Double-Layer Capacitors, Tech

Electrical double layer

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Schematic representation of (a) electrical double-layer capacitor

Transparent graphene electrodes might lead to new generation of solar cells, MIT News

Double layer (surface science) - Wikipedia

Electrical double layer theory

Engineering a self-adaptive electric double layer on both electrodes for high-performance zinc metal batteries - Energy & Environmental Science (RSC Publishing)

Capacitance of carbon-based electrical double-layer capacitors