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However, their practical application is hindered by poor electronic conductivity and the dissolution of active species. Herein, we report the rational design of a 2D carbonyl-functionalized graphyne (CfGY), constructed from a conjugated carbon skeleton and abundant carbonyl active sites via a Sonogashira cross-coupling reaction. The conductive sp\u2013sp2 hybridized backbone, hierarchical mesoporous network and expanded interlayer spacing jointly facilitate rapid electron conduction (Eg = 1.95 eV) and Li+ migration (DLi+ = 1 \u00d7 10\u201311 cm2 s\u20131). Synergistic lithium storage across carbonyl groups, alkyne linkages and aromatic rings reinforces structural robustness and elevates reversible capacity. After 340 cycles at 0.1 A g\u20131, the self-supporting CfGY electrode retains a high capacity of 987 mAh g\u20131, while sustaining steady 420 mAh g\u20131 over 800 long cycles at 1 A g\u20131 with negligible capacity decay. This backbone functionalization strategy unifies framework conductivity and multisite redox reactivity, delivering a generalizable guideline for developing high-stability, high-capacity organic anodes for next-generation lithium-ion batteries.<\/jats:p>","DOI":"10.1021\/acs.jpclett.6c02264","type":"journal-article","created":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T07:02:01Z","timestamp":1791183721000},"page":"11738-11746","source":"Crossref","is-referenced-by-count":0,"title":["A Carbonyl-Rich\nConjugated Microporous Polymer for\nHighly Efficient Lithiumion Storage"],"prefix":"10.1021","volume":"17","author":[{"given":"Xiaorong","family":"Wang","sequence":"first","affiliation":[{"name":"Qingdao University of Science and Technology , , No. 53 Zhengzhou Road , ,","place":["Qingdao, P.R. 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China, 266042"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haiyan","family":"Cui","sequence":"additional","affiliation":[{"name":"Qingdao University of Science and Technology , , No. 53 Zhengzhou Road , ,","place":["Qingdao, P.R. China, 266042"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3526-0545","authenticated-orcid":true,"given":"Wei","family":"Zhao","sequence":"additional","affiliation":[{"name":"Qingdao University of Science and Technology , , No. 53 Zhengzhou Road , ,","place":["Qingdao, P.R. China, 266042"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8221-7825","authenticated-orcid":true,"given":"Jingjiang","family":"Sun","sequence":"additional","affiliation":[{"name":"Qingdao University of Science and Technology , , No. 53 Zhengzhou Road , ,","place":["Qingdao, P.R. 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Am. 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Mater."}],"container-title":["The Journal of Physical\nChemistry Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acs.jpclett.6c02264","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/jpclcd\/article-pdf\/doi\/10.1021\/acs.jpclett.6c02264\/68741068\/acs.jpclett.6c02264.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/jpclcd\/article-pdf\/doi\/10.1021\/acs.jpclett.6c02264\/68741068\/acs.jpclett.6c02264.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T12:30:17Z","timestamp":1792067417000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/jpclcd\/article\/17\/41\/11738\/5444295\/A-Carbonyl-Rich-Conjugated-Microporous-Polymer-for"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,5]]},"references-count":45,"journal-issue":{"issue":"41","published-online":{"date-parts":[[2026,10,5]]},"published-print":{"date-parts":[[2026,10,15]]}},"URL":"https:\/\/doi.org\/10.1021\/acs.jpclett.6c02264","relation":{},"ISSN":["1948-7185"],"issn-type":[{"value":"1948-7185","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,5]]}}}