There are various hybrid devices of battery and supercapacitor, such as supercapattery and metal ion capacitor. The latter is best represented by the lithium ion capacitor (LIC) whose connection to lithium ion battery (LIB) has attracted many more attentions in recent years. There are claims that all metal ion capacitors are a type of supercapattery if one considers the definitions of these two devices. There are also recent developments of metal negatrode based supercapattery which is in some publications termed as xxx metal capacitor, e.g. Lithium metal capacitor (LMC).
Can you offer any comment or share your view on these terminological issues? I ask this question because I am editing a special issue on "Merit-hybridisation: Supercapattery, ion-capacitor and advanced energy stores" for the Journal of Solid State Electrochemistry. The webpage of this special issue is given below.
https://link.springer.com/collections/fajcbghdff
Respected George Zheng Chen , Sir, The terminological concerns you identify come from the devices' overlapping nature. Due to the hybrid nature of its design, some consider all metal-ion capacitors to be a form of supercapattery. Some publications use the phrase "metal capacitor" (e.g., lithium metal capacitor, or LMC) when discussing new breakthroughs in metal-negative electrode-based supercapattery.
For your special issue on "Merit-hybridization: Supercapattery, Ion-Capacitor, and Advanced Energy Stores," it would be beneficial to encourage authors to provide accurate definitions and explanations of the terminology used in their work. This will assist in increasing our understanding of the devices under consideration and standardizing nomenclature in this rapidly developing field.
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