The Origin of the Constant Phase Element

The constant phase element (CPE) is usually observed at solid electrodes. It is a source of controversies and misunderstandings. In this Viewpoint, theory, properties, experimental results, and the origin of the CPE are presented and discussed.

Automated summary

The constant phase element (CPE) is commonly observed at solid electrodes, leading to controversies and misunderstandings. This viewpoint addresses the theory, properties, experimental results, and origin of the CPE.