Electrochemical capacitors (i.e. supercapacitors) include electrochemical double-layer capacitors that depend on the charge storage of ion adsorption and pseudo-capacitors that are based on charge storage involving fast surface redox reactions. The energy storage capacities of supercapacitors are several ord
Provided by the Springer Nature SharedIt content-sharing initiative Electrochemical capacitors, also called supercapacitors, store energy using either ion adsorption (electrochemical double layer capacitors) or fast surface redox reactions (pseudo-capacitors).
Electrochemical capacitors can store electrical energy harvested from intermittent sources and deliver energy quickly, but increased energy density is required for flexible and wearable electronics and larger equipment. Progress in materials and devices and key perspectives in this field are outlined.
Among many natural organic materials, only some of them are considered useful precursors for producing bio-derived materials in high-performance electrochemical capacitors. Ongoing research brings many novel concepts of using these materials in high-performance electrochemical capacitors.
Scientifically justified metrics for testing, comparison and optimization of various kinds of electrochemical capacitors are provided and explained.
Electrochemical capacitors are a good choice due to the highly tunable properties of materials used for their construction. This makes them suitable for a broad range of applications with high power demand.