biostudies-literatureYe ZFNatural Science Foundation of Zhejiang ProvinceNational Natural Science Foundation of ChinaGuangdong Basic and Applied Basic Research Foundatione04281https://www.ebi.ac.uk/biostudies/studies/S-EPMC12376711biostudies-literatureUnknown12(30)A novel carbon-cage network was reported, denoted as C<sub>18</sub>, found to be a low energy structure by first principles particle swarm structure search. The compound exhibits high temperature electron-phonon ambient pressure superconductivity with T<sub>c</sub> = 79 K for elemental doping and can be raised to T<sub>c</sub> = 109 K by appropriate hole doping. Analyses of the phonon spectra, molecular dynamics simulations, and enthalpy differences relative to analogous structures synthesized experimentally all suggest that the hole-doped high-T<sub>c</sub> structure is a viable candidate for experimental synthesis.Advanced science (Weinheim, Baden-Wurttemberg, Germany)Superconducting Carbon-Cage Network with T<sub>c</sub> of 109 K at Ambient Pressure.PMC123767111207440111904319LQ18A040002120881012024A1515011757Lin HQYe ZFHuang YNSingh DJZhong GHfalseSuperconducting Carbon-Cage Network with T<sub>c</sub> of 109 K at Ambient Pressure.A novel carbon-cage network was reported, denoted as C<sub>18</sub>, found to be a low energy structure by first principles particle swarm structure search. The compound exhibits high temperature electron-phonon ambient pressure superconductivity with T<sub>c</sub> = 79 K for elemental doping and can be raised to T<sub>c</sub> = 109 K by appropriate hole doping. Analyses of the phonon spectra, molecular dynamics simulations, and enthalpy differences relative to analogous structures synthesized experimentally all suggest that the hole-doped high-T<sub>c</sub> structure is a viable candidate for experimental synthesis.2025-01-01T00:00:00Z2025 Aug2026-05-09T19:05:47.766Z2026-04-08T01:10:44.316ZS-EPMC123767114043969110.1002/advs.202504281