Alkali metal‐ion capacitors integrate two electrodes from both batteries and supercapacitors
(SCs), combining the advantages of large capacity, high‐rate performance, and long cycle …

As a new type of capacitor–battery hybrid energy storage device, metal‐ion capacitors have
attracted widespread attention because of their high‐power density while ensuring energy …

Abstract Sodium‐ion capacitors (SICs), designed to attain high energy density, rapid energy
delivery, and long lifespan, have attracted much attention because of their comparable …

Sodium‐ion hybrid capacitors (SICs), combining the advantages of both sodium‐ion
batteries (SIBs) and electrochemical supercapacitors, have captured sustained attention in …

Hybrid supercapacitors are the most desirable electrochemical energy storage devices,
owing to their versatile and tunable performance characteristics, specifically in energy and …

In recent years metal ion capacitors (MICs) and supercapacitors devices have been reported
as promising alternatives for energy storage on a large scale. MICs are characterized by …

In the past 10 years, preeminent achievements and outstanding progress have been
achieved on sodium‐ion capacitors (SICs). Early work on SICs focussed more on the …

Potassium-ion capacitors (PICs) are promising energy storage devices, which are
competitive with lithium-ion and sodium ion capacitors. PICs combine the advantages of a …

Although hybrid metal ion capacitors (MICs) are highly desired to achieve both high power
density of supercapacitors and high energy density of rechargeable batteries, the mismatch …

Potassium‐ion hybrid capacitors (PIHCs) overcome the limitations of potassium‐ion
batteries (PIBs) and supercapacitors (SCs) and integrate the advantages of both, including …