{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T21:38:49Z","timestamp":1791581929555,"version":"4.3.4"},"reference-count":46,"publisher":"Wiley","issue":"27","license":[{"start":{"date-parts":[[2025,4,25]],"date-time":"2025-04-25T00:00:00Z","timestamp":1745539200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"published-print":{"date-parts":[[2025,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Broadband and ultrathin electromagnetic interference (EMI)\u2010shielding materials are crucial for efficient high\u2010frequency data transmission in emerging technologies. MXenes are renowned for their outstanding electrical conductivity and EMI\u2010shielding capability. While substituting nitrogen (N) for carbon (C) atoms in the conventional MXene structure is theoretically expected to enhance these properties, synthesis challenges have hindered progress. Here, it is demonstrated that Ti\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    C\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    N\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u2010<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u20101<\/jats:sub>\n                    T\n                    <jats:italic>\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    MXene films with optimized N content achieve a record\u2010high electrical conductivity of 35\u2009000 S cm\n                    <jats:sup>\u22121<\/jats:sup>\n                    and exceptional broadband EMI shielding across the X (8\u201312.4\u00a0GHz), K\n                    <jats:sub>a<\/jats:sub>\n                    (26.5\u201340\u00a0GHz), and W (75\u2013110\u00a0GHz) bands\u2014outperforming all previously reported materials even at reduced thicknesses. By synthesizing a full series of high\u2010stoichiometric Ti\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    AlC\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    N\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u2010<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u20101<\/jats:sub>\n                    MAX phases without intermediate phases, the impact of N substitution on the physical and electrical properties of Ti\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    C\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    N\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u2010<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u20101<\/jats:sub>\n                    T\n                    <jats:italic>\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    MXene flakes is systematically explored, achieving complete composition tunability in both dispersion and film forms. These findings position Ti\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    C\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    N\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u2010<\/jats:sub>\n                    <jats:italic>\n                      <jats:sub>y<\/jats:sub>\n                    <\/jats:italic>\n                    <jats:sub>\u20101<\/jats:sub>\n                    T\n                    <jats:italic>\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    MXenes as promising candidates for applications spanning from conventional lower\u2010frequency domains to next\u2010generation sub\u2010THz electronics.\n                  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