The development of ultrastable carbon materials for potassium storage poses key limitations caused by the huge volume variation and sluggish kinetics.N itrogen-enriched porous carbons have recently emerged as promising candidates for this application;h owever,r ational control over nitrogen doping is needed to further suppress the long-term capacity fading. Here we propose astrategy based on pyrolysis-etching of apyridine-coordinated polymer for deliberate manipulation of edge-nitrogen doping and specific spatial distribution in amorphous high-surface-area carbons;t he obtained material shows an edge-nitrogen content of up to 9.34 at %, richer N distribution inside the material, and high surface area of 616 m 2 g À1 under ac ost-effective low-temperature carbonization. The optimizedc arbon delivers unprecedented K-storage stability over 6000 cycles with negligible capacity decay (252 mA hg À1 after 4months at 1Ag À1), rarely reported for potassium storage.

Potassium‐ion batteries (PIBs) have emerged as a compelling complement to existing lithium‐ion batteries for large‐scale energy storage applications, due to the resource‐abundance of potassium, the low standard redox potential and high conductivity of K+‐based electrolytes. Rapid progress has been made in identifying suitable carbon anode materials to address the sluggish kinetics and huge volume variation problems caused by large‐size K+. However, most research into carbon materials has focused on structural design and performance optimization of one or several parameters, rather than considering the holistic performance especially for realistic applications. This perspective examines recent efforts to enhance the carbon anode performance in terms of initial Coulombic efficiency, capacity, rate capability, and cycle life. The balancing of the intercalation and surface‐driven capacitive mechanisms while designing carbon structures is emphasized, after which the compatibility with electrolyte and the cell assembly technologies should be considered under practical conditions. It is anticipated that this work will engender further intensive research that can be better aligned toward practical implementation of carbon materials for K+ storage.

Rational engineering of edge‐enriched N in porous carbonaceous materials is effective to enhance their cyclability for potassium storage. In their Research Article on page 19460, H. Wang, S. Kaskel, and co‐workers demonstrate a pyridine‐coordinated polymer pyrolysis–etching strategy for realizing both edge‐enriched N and a high surface area, thus delivering ultrastable performances over 6000 cycles driven by pseudocapacitive behavior.

The incorporation of functional building blocks to construct functionalized and highly porous covalent triazine frameworks (CTFs) is essential to the emerging adsorptive-involved field. Herein, a series of amide functionalized CTFs (CTF-PO71) have been synthesized using a bottom-up strategy in which pigment PO71 with an amide group is employed as a monomer under ionothermal conditions with ZnCl2 as the solvent and catalyst. The pore structure can be controlled by the amount of ZnCl2 to monomer ratio. Benefitting from the highly porous structure and amide functionalities, CTF-PO71, as a sulfur cathode host, simultaneously demonstrates physical confinement and chemical anchoring of sulfur species, thus leading to superior capacity, cycling stability, and rate capability in comparison to unfunctionalized CTF. Meanwhile, as an adsorbent of organic dye molecules, CTF-PO71 was demonstrated to exhibit strong chemical interactions with dye molecules, facilitating adsorption kinetics and thereby promoting the adsorption rate and capacity. Furthermore, the dynamic adsorption experiments of organic dyes from solutions showed selectivity/priority of CTF-PO71s for specific dye molecules.

The development of ultrastable carbon materials for potassium storage poses key limitations caused by the huge volume variation and sluggish kinetics.N itrogen-enriched porous carbons have recently emerged as promising candidates for this application;h owever,r ational control over nitrogen doping is needed to further suppress the long-term capacity fading. Here we propose astrategy based on pyrolysis-etching of apyridine-coordinated polymer for deliberate manipulation of edge-nitrogen doping and specific spatial distribution in amorphous high-surface-area carbons;t he obtained material shows an edge-nitrogen content of up to 9.34 at %, richer N distribution inside the material, and high surface area of 616 m 2 g À1 under ac ost-effective low-temperature carbonization. The optimizedc arbon delivers unprecedented K-storage stability over 6000 cycles with negligible capacity decay (252 mA hg À1 after 4months at 1Ag À1), rarely reported for potassium storage.

Der gezielte Aufbau … … von N-reichen Kanten in porçsen Kohlenstoffmaterialien ermçglicht eine verbesserte Zyklenfähigkeit in der Kaliumspeicherung. In ihrem Forschungsartikel auf S. 19628 demonstrieren H. Wang, S. Kaskel et al. eine Pyrolyse/Etching-Strategie an einem pyridinkoordinierten Polymer für die Erzeugung N-reicher Kanten sowie einer großen Oberfläche, was zu einer ultrastabilen Performance mit über 6000 Zyklen führt.