Capacitance of the Double Layer Formed at the Metal/Ionic-Conductor Interface: How Large Can It Be?

Details Capacitance of the Double Layer Formed at the Metal/Ionic-Conductor Interface: How Large Can It Be? Capacitance of the Double Layer Formed at the Metal/Ionic-Conductor Interface: How Large Can It Be?

2009-10-19

arxiv.org/abs/0910.3635v4

Brian Skinner, M. S. Loth, and B. I. Shklovskii, Phys. Rev. Lett. 104, 128302 (2010)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures; published version

Scientific paper

10.1103/PhysRevLett.104.128302

The capacitance of the double layer formed at a metal/ionic-conductor interface can be remarkably large, so that the apparent width of the double layer is as small as 0.3 \AA. Mean-field theories fail to explain such large capacitance. We propose an alternate theory of the ionic double layer which allows for the binding of discrete ions to their image charges in the metal. We show that at small voltages the capacitance of the double layer is limited only by the weak dipole-dipole repulsion between bound ions, and is therefore very large. At large voltages the depletion of bound ions from one of the capacitor electrodes triggers a collapse of the capacitance to the mean-field value.

Affiliated with

Also associated with

No associations

Rating

Capacitance of the Double Layer Formed at the Metal/Ionic-Conductor Interface: How Large Can It Be? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Capacitance of the Double Layer Formed at the Metal/Ionic-Conductor Interface: How Large Can It Be?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitance of the Double Layer Formed at the Metal/Ionic-Conductor Interface: How Large Can It Be? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-716552