Potassium ion energy storage devices are competitive candidates for grid-scale energy
storage applications owing to the abundancy and cost-effectiveness of potassium (K) …

Electrochemical energy storage (EES) devices with high‐power density such as capacitors,
supercapacitors, and hybrid ion capacitors arouse intensive research passion. Recently …

Hard carbon (HC) is a promising anode material for K+-storage due to its randomly oriented
turbostratic structure. However, most reported HC anodes exhibit low initial coulombic …

Currently, tremendous efforts have been made to obtain a single efficient energy storage
device with both high energy and power density, bridging the gap between supercapacitors …

Potassium‐ion batteries (PIBs) have attracted tremendous attention because of their high
energy density and low‐cost. As such, much effort has focused on developing electrode …

Limited lithium resources have promoted the exploration of new battery technologies.
Among them, potassium‐ion batteries are considered as promising alternatives. At present …

The sodium (potassium)‐metal anodes combine low‐cost, high theoretical capacity, and
high energy density, demonstrating promising application in sodium (potassium)‐metal …

The design and development of advanced energy storage devices with good energy/power
densities and remarkable cycle life has long been a research hotspot. Metal‐ion hybrid …

Hard carbons with low cost and high specific capacity hold great potential as anode
materials for potassium‐based energy storage. However, their sluggish reaction kinetics and …

Potassium-ion hybrid capacitor (PIHC) has been deemed as an appealing energy storage
system thanks to its low cost and reconciled energy/power density. Nevertheless, the rapid …