biostudies-literatureUnknownLi ZJinan UniversityGuangzhou Municipal Science and Technology ProjectNational Natural Science Foundation of ChinaNatural Science Foundation of Guangdong ProvinceDue to the complex fabrication process and poor reversibility of potassium (K) metal, developing high-performance host materials for K metal anodes remains a significant challenge. In this work, an ultrathin and dense N-doped carbon layer was uniformly loaded onto carbon fibers (N-CF) as a host for K metal anodes. This design effectively regulates the intrinsic adsorption behavior of metallic K, mitigating the effects of local uneven electric fields in the electrolyte and enabling stable cycling performance at high current densities. We found that the N functional groups synergistically constructed a robust potassiophilic surface, facilitating spontaneous and rapid integration with molten K. This process effectively suppresses dendrite growth and ensures stable cycling of the K metal anodeChemical sciencehttps://www.ebi.ac.uk/biostudies/studies/S-EPMC12308916biostudies-literatureUltrathin potassiophilic carbon skin design achieving ultra-stable potassium metal anodes.PMC12308916521722022024CXB03122479053202102020737Li ZLi JMa LHu ZMai WDeng MfalseUltrathin potassiophilic carbon skin design achieving ultra-stable potassium metal anodes.Due to the complex fabrication process and poor reversibility of potassium (K) metal, developing high-performance host materials for K metal anodes remains a significant challenge. In this work, an ultrathin and dense N-doped carbon layer was uniformly loaded onto carbon fibers (N-CF) as a host for K metal anodes. This design effectively regulates the intrinsic adsorption behavior of metallic K, mitigating the effects of local uneven electric fields in the electrolyte and enabling stable cycling performance at high current densities. We found that the N functional groups synergistically constructed a robust potassiophilic surface, facilitating spontaneous and rapid integration with molten K. This process effectively suppresses dendrite growth and ensures stable cycling of the K metal anode2025-01-01T00:00:00Z2025 Jul2026-05-28T02:17:12.175Z2025-08-27T03:06:46.279ZS-EPMC123089164074732310.1039/d5sc04233j