{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T13:01:12Z","timestamp":1790600472679,"version":"4.1.0"},"reference-count":54,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["62474024"],"award-info":[{"award-number":["62474024"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small Methods"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The practical application of iron\u2010ion hybrid capacitors is severely hindered by inadequate energy density and insufficient cycling robustness. Herein, we present a self\u2010supporting electrode comprising iron\u2010based oxide\/carbon composites, fabricated via in situ pyrolysis of MIL\u201053(Fe) precursors directly on carbon cloth. A subsequent controlled oxidation treatment enables precise modulation of oxygen vacancy concentration, yielding the optimally engineered M\u2010CFO\n                    <jats:sub>V<\/jats:sub>\n                    composites. Notably, the binder\u2010free, self\u2010supporting configuration offers compelling advantages over traditional slurry\u2010coated electrodes, including accelerated electron transport, improved solid\u2013liquid interfacial compatibility, and robust mechanical integrity, which collectively ensure outstanding capacity retention over prolonged cycling. Simultaneously, the MOF\u2010derived hierarchical porous structure promotes rapid electrolyte infiltration, shortens ion diffusion pathways, and exposes a large fraction of electrochemically accessible sites, thereby broadening the operational versatility of the device. When evaluated in an iron\u2010ion supercapacitor incorporating a choline chloride\u2013optimized electrolyte, the M\u2010CFO\n                    <jats:sub>V<\/jats:sub>\n                    electrode achieves a remarkable specific capacitance of 2073.9 mF cm+ at 1\u00a0mA cm\u20102, along with an energy density of 48.8 mWh g\u20101. More importantly, a flexible iron\u2010ion hybrid supercapacitor assembled with the M\u2010CFO\n                    <jats:sub>V<\/jats:sub>\n                    cathode delivers high capacitance (1325.8 mF cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    ), energy density (35.75 mAh g\n                    <jats:sup>\u22121<\/jats:sup>\n                    ), and exceptional cycling stability (92.3% retention after 10\u00a0000 cycles), offering a new strategy for advanced energy storage.\n                  <\/jats:p>","DOI":"10.1002\/smtd.71071","type":"journal-article","created":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T12:41:31Z","timestamp":1790599291000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["MIL\u201053(Fe)\u2010Derived Oxygen Vacancy\u2010Regulated Iron Oxides Cathode Enabling Long\u2010Cycling Flexible Iron\u2010Ion Hybrid Supercapacitors"],"prefix":"10.1002","author":[{"given":"Ke","family":"Zhang","sequence":"first","affiliation":[{"name":"Key Laboratory of Advanced Structural Materials Ministry of Education and School of Materials Science and Engineering Changchun University of Technology  Changchun China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuxin","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Structural Materials Ministry of Education and School of Materials Science and Engineering Changchun University of Technology  Changchun China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qinwei","family":"Guan","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Structural Materials Ministry of Education and School of Materials Science and Engineering Changchun University of Technology  Changchun 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