{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T16:51:06Z","timestamp":1791910266410,"version":"4.3.4"},"reference-count":72,"publisher":"Wiley","issue":"57","license":[{"start":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T00:00:00Z","timestamp":1786492800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T00:00:00Z","timestamp":1786492800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Sodium\u2013sulfur (Na\u2013S) batteries are hindered by sluggish sulfur conversion kinetics and polysulfides dissolution. Although catalysts are widely introduced to improve kinetics, the crucial question persists in how catalytic sites can be effectively accessible to polysulfides especially when pursuing a highly confined sulfur redox pathway. Here we bring catalyst accessibility into focus and demonstrate that a synthetic strategy based on in situ embedded catalytic sites maximizes catalytic accessibility and efficiency. Through a bottom\u2010up, precursor\u2010integrated host synthesis route, we in situ embedded Nb\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>5<\/jats:sub>\n                    catalyst into carbon nanotubes in parallel with formation of extensive nanoporosity. Subsequent sulfur impregnation yields a cathode structure (I\u2010Nb\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>5<\/jats:sub>\n                    @C\u2013S) featuring abundant catalyst\u2013pore\u2013sulfur triple\u2010phase interfaces. As a result, I\u2010Nb\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>5<\/jats:sub>\n                    @C\u2212S delivers among the most promising sulfur utilization in literature, achieving 1540 mAh g\n                    <jats:sup>\u22121<\/jats:sup>\n                    at 0.1 C, and 1044 mAh g\n                    <jats:sup>\u22121<\/jats:sup>\n                    at 3 C with a low\u2010capacity decay of 0.027% per cycle over 1500 cycles. In contrast, a counterpart with spatially isolated Nb\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>5<\/jats:sub>\n                    and sulfur exhibits deficient catalytic accessibility and negligible improvement in sulfur redox kinetics. Kinetic diagnostics, combined with niobium K\u2010edge and operando sulfur K\u2010edge x\u2010ray absorption spectroscopy, reveal that direct accessibility of catalytic sites to sulfur is essential for synergizing polysulfide confinement and kinetic improvement.\n                  <\/jats:p>","DOI":"10.1002\/adma.74611","type":"journal-article","created":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T07:38:12Z","timestamp":1786520292000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["In Situ Embedded Catalytic Sites Accelerate Redox Kinetics for High\u2010Performance Sodium\u2013Sulfur Batteries"],"prefix":"10.1002","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4190-4105","authenticated-orcid":false,"given":"Hongchang","family":"Hao","sequence":"first","affiliation":[{"name":"SLAC\u2010Stanford Battery Center SLAC National Accelerator Laboratory  Menlo Park California 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