biostudies-literatureCarboni MEnergimyndighetenStiftelsen Åforsk21070-21074https://www.ebi.ac.uk/biostudies/studies/S-EPMC9065985biostudies-literatureUnknown9(36)Graphite is considered a promising candidate as the anode for potassium-ion batteries (KIBs). Here, we demonstrate a significant improvement in performance through the ball-milling of graphite. Electrochemical techniques show reversible K-intercalation into graphitic layers, with 65% capacity retention after 100 cycles from initial capacities and extended cycling beyond 200 cycles. Such an affinity of the graphite towards storage of K-ions is explained by means of SEM and Raman analyses. Graphite ball-milling results in a gentle mechanical exfoliation of the graphene layers and simultaneous defect formation, leading to enhanced electrochemical performance.RSC advancesUnlocking high capacities of graphite anodes for potassium-ion batteries.PMC906598518-317TriLi project2017-013531Valvo MCarboni MNaylor AJYounesi RfalseUnlocking high capacities of graphite anodes for potassium-ion batteries.Graphite is considered a promising candidate as the anode for potassium-ion batteries (KIBs). Here, we demonstrate a significant improvement in performance through the ball-milling of graphite. Electrochemical techniques show reversible K-intercalation into graphitic layers, with 65% capacity retention after 100 cycles from initial capacities and extended cycling beyond 200 cycles. Such an affinity of the graphite towards storage of K-ions is explained by means of SEM and Raman analyses. Graphite ball-milling results in a gentle mechanical exfoliation of the graphene layers and simultaneous defect formation, leading to enhanced electrochemical performance.2019-01-01T00:00:00Z2019 Jul2025-04-22T07:45:53.534Z2025-04-05T22:17:39.887ZS-EPMC90659853551552010.1039/c9ra01931f