Over the past decades, ground‐breaking techniques and transformative progress have been
achieved on exploring alternative battery candidates beyond lithium‐ion batteries, among …

Carbon materials, including graphite, hard carbon, soft carbon, graphene, and carbon
nanotubes, are widely used as high‐performance negative electrodes for sodium‐ion and …

Defect‐rich carbon materials possess high gravimetric potassium storage capability due to
the abundance of active sites, but their cyclic stability is limited because of the low …

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 …

Oxygen‐containing functional groups (OFGs) grafted by carbon materials surface can serve
as active sites to reversibly store potassium and simultaneously contribute to forming a …

Recently, the limited abundance and uneven geographical distribution of Li resources
seriously hamper the growing demand for lithium-based energy storage devices. In this …

Potassium‐ion batteries (PIBs) exhibit a considerable application prospect for energy
storage systems due to their low cost, high operating voltage, and superior ionic …

Rechargeable batteries currently hold the largest share of the electrochemical energy
storage market, and they play a major role in the sustainable energy transition and industrial …

Highly conductive metal selenides have attracted considerable attention as a conversion-
type anode of sodium-ion batteries (SIBs). However, their poor rate capability, sluggish …

Nitrogen (N) doped graphitic-carbon materials as anode have been intensively studied for
potassium-ion batteries (PIBs). However, insufficient N-doping content, especially the low …