Increased energy consumption stimulates the development of various energy types. As a
result, the storage of these different types of energy becomes a key issue. Supercapacitors …

In this critical Review we focus on the evolution of the hybrid ion capacitor (HIC) from its
early embodiments to its modern form, focusing on the key outstanding scientific and …

Transition metal selenides are considered reliable anode materials for sodium-ion batteries
(SIBs) on account of their commendable sodium storage capability. Yet they still face …

Sodium-and potassium-ion (Na-/K-ion) hybrid capacitors are promising electrochemical
energy storage systems that are more cost-effective than corresponding lithium-based …

Carbon‐based materials have been considered as the most promising anode materials for
both sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs), owing to their good …

Hard carbons (HCs) are promising anodes of sodium‐ion batteries (SIBs) due to their high
capacity, abundance, and low cost. However, the sodium storage mechanism of HCs …

Potassium-ion batteries are a promising alternative to lithium-ion batteries. However, it is
challenging to achieve fast charging/discharging and long cycle life with the current …

Notably, many significant breakthroughs for a new generation of supercapacitors have been
reported in recent years, related to theoretical understanding, material synthesis and device …

Hybrid metal‐ion capacitors (MICs)(M stands for Li or Na) are designed to deliver high
energy density, rapid energy delivery, and long lifespan. The devices are composed of a …

Abstract Development of two-dimensional (2D) porous carbon nanosheets (PCNs) with an
interlinked hierarchical porous structure has attracted great attention due to their synergetic …