{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T13:48:54Z","timestamp":1791985734390,"version":"4.4.0"},"reference-count":48,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T00:00:00Z","timestamp":1791936000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T00:00:00Z","timestamp":1791936000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Rechargeable aqueous zinc\u2010ion batteries (AZIBs) offer safe, low\u2010cost, and sustainable alternatives to lithium\u2010ion systems. However, dendritic Zn growth downgrades Coulombic efficiency and cycling stability, limiting their practical deployment. Replacing Zn\u2010metal anodes with reversible organic anodes capable of efficient Zn\n                    <jats:sup>2+<\/jats:sup>\n                    storage with average discharge voltage below 0.6\u00a0V (vs Zn\/Zn\n                    <jats:sup>2+<\/jats:sup>\n                    ) is superior yet challenging. Herein, we report a self\u2010exfoliated bipolar few\u2010layer polyimide\u2010based covalent organic nanosheet (\n                    <jats:bold>\n                      <jats:italic>tht<\/jats:italic>\n                      \u2010NDA\u2010PI\u2010CON\n                    <\/jats:bold>\n                    ) as anode, synthesized via solvent\u2010free organic flux route using \u201c\u2010NH\u2010\u201d homologation strategy, which promotes self\u2010exfoliation by introducing structural flexibility while simultaneously generating electron\u2010rich sp\n                    <jats:sup>3<\/jats:sup>\n                    \u2010NH centres, acting as electronic buffer in between carbonyl and triazine units constructing a bipolar framework, enabling low\u2010energy barrier dual\u2010ion binding kinetics. The porous nanosheet, enriched with redox centres delivers 185 mAh g\n                    <jats:sup>\u22121<\/jats:sup>\n                    at 0.2 A g\n                    <jats:sup>\u22121<\/jats:sup>\n                    (84.6% contributes from single discharge plateau), high\u2010rate capability (78.6% retention\/5 A g\n                    <jats:sup>\u22121<\/jats:sup>\n                    ), and 81% capacity retention over 5000 cycles. Ex situ analyses and first\u2010principles calculations reveal Zn\n                    <jats:sup>2+<\/jats:sup>\n                    coordination with carbonyl and triazine sites during discharge, while SO\n                    <jats:sub>4<\/jats:sub>\n                    <jats:sup>2\u2212<\/jats:sup>\n                    is stabilized by homologated \u2010NH\u2010 unit upon charging. When paired with MnO\n                    <jats:sub>2<\/jats:sub>\n                    , full cell delivers record energy density of 82.73\u00a0Wh kg\n                    <jats:sup>\u22121<\/jats:sup>\n                    with 84.8% capacity retention over 3000 cycles, demonstrating its potential for next\u2010generation Zn\u2010based dual\u2010ion battery technologies.\n                  <\/jats:p>","DOI":"10.1002\/smll.76259","type":"journal-article","created":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T13:13:01Z","timestamp":1791983581000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["\u201c\u2010NH\u2010\u201d Homologation Driven Self\u2010Exfoliated Bipolar Covalent Organic Nanosheet as Dual\u2010Ion Binding Anode for High\u2010Performance Aqueous Zinc\u2010Based Dual\u2010Ion Battery"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7971-1507","authenticated-orcid":false,"given":"Sourav Kumar","family":"Sarkar","sequence":"first","affiliation":[{"name":"Materials Chemistry &amp; Interfacial Engineering Department CSIR\u2010Institute of Minerals &amp; Materials Technology  Bhubaneswar India"},{"name":"Academy of Scientific and Innovative Research (AcSIR)  Ghaziabad India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-5745-6238","authenticated-orcid":false,"given":"Rahul","family":"Sarkar","sequence":"additional","affiliation":[{"name":"Materials Chemistry &amp; Interfacial Engineering Department CSIR\u2010Institute of Minerals &amp; Materials Technology  Bhubaneswar India"},{"name":"Academy of Scientific and Innovative Research (AcSIR)  Ghaziabad 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A.","family":"Addicoat","sequence":"additional","affiliation":[{"name":"School of Science &amp; Technology Nottingham Trent University  Nottingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-8549-6862","authenticated-orcid":false,"given":"Mrutyunjaya","family":"Majhi","sequence":"additional","affiliation":[{"name":"Materials Chemistry &amp; Interfacial Engineering Department CSIR\u2010Institute of Minerals &amp; Materials Technology  Bhubaneswar India"},{"name":"Academy of Scientific and Innovative Research (AcSIR)  Ghaziabad India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9223-8021","authenticated-orcid":false,"given":"Sanjib","family":"Das","sequence":"additional","affiliation":[{"name":"Materials Chemistry &amp; Interfacial Engineering Department CSIR\u2010Institute of Minerals &amp; Materials Technology  Bhubaneswar India"},{"name":"Academy of Scientific and Innovative 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