{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T23:44:36Z","timestamp":1792107876671,"version":"4.4.0"},"reference-count":0,"publisher":"The Electrochemical Society","license":[{"start":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T00:00:00Z","timestamp":1792022400000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/iop-standard\/v1"},{"start":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T00:00:00Z","timestamp":1792022400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"DOI":"10.13039\/501100001842","name":"Department of Higher Education, India","doi-asserted-by":"publisher","award":["IIT Bhubaneswar"],"award-info":[{"award-number":["IIT Bhubaneswar"]}],"id":[{"id":"10.13039\/501100001842","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Electrochem. Soc."],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Selective alkaline leaching of Al\u2013Si alloys is a simple and economical route for producing porous silicon. However, the mechanism governing aluminium hydroxide (gibbsite) formation and its suppression during leaching remains poorly understood. This work develops a mechanism-guided alkaline leaching strategy for producing high-purity porous silicon from an Al\u2013Si alloy. The effects of KOH concentration, solution volume, and leaching conditions on aluminium dissolution and gibbsite formation were systematically investigated. Regulated-pH experiments, phase analysis, and shrinking-core kinetic modelling revealed that gibbsite precipitation originates from localized pH gradients near the solid\u2013liquid interface. Vigorous agitation and optimised alkaline conditions suppress gibbsite formation by enhancing mass transport. The optimised porous silicon was subsequently purified by acid leaching and systematically characterised to confirm its high purity and porous architecture. As a lithium-ion battery anode, the porous silicon delivered an initial discharge capacity of approximately 2752 mAh g-1, an initial coulombic efficiency of 80.56%, stable cycling over 300 cycles, and a high-rate capacity of approximately 580 mAh g\n                    <jats:sup>-1<\/jats:sup>\n                    at 5 A g\n                    <jats:sup>-1<\/jats:sup>\n                    . The mechanistic understanding provides practical guidelines for scalable, HF-free production of high-purity porous silicon and demonstrates its potential for high-capacity lithium-ion battery applications.\n                  <\/jats:p>","DOI":"10.1149\/1945-7111\/aeb4f1","type":"journal-article","created":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T22:52:11Z","timestamp":1792104731000},"source":"Crossref","is-referenced-by-count":0,"title":["Mechanism-Guided Alkaline Leaching of Al\u2013Si Alloy Enables High-Purity Porous Silicon Anodes for Fast-Charging Lithium-Ion Batteries"],"prefix":"10.1149","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-5733-3297","authenticated-orcid":false,"given":"Somen Sagar","family":"Jena","sequence":"first","affiliation":[{"name":"IIT Bhubaneswar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1996-6900","authenticated-orcid":false,"given":"Ashwani","family":"Pandey","sequence":"additional","affiliation":[{"name":"IIT Bhubaneswar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-1758-6835","authenticated-orcid":false,"given":"SARTHAK","family":"PATNAIK","sequence":"additional","affiliation":[{"name":"IIT Bhubaneswar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6305-6771","authenticated-orcid":false,"given":"Uttam Kumar","family":"Chanda","sequence":"additional","affiliation":[{"name":"IIT Bhubaneswar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2111-9775","authenticated-orcid":false,"given":"Amritendu","family":"Roy","sequence":"additional","affiliation":[{"name":"IIT Bhubaneswar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3105-0663","authenticated-orcid":false,"given":"Soobhankar","family":"Pati","sequence":"additional","affiliation":[{"name":"IIT Bhubaneswar"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"77","published-online":{"date-parts":[[2026,10,15]]},"container-title":["Journal of The Electrochemical Society"],"original-title":[],"link":[{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1945-7111\/aeb4f1","content-type":"text\/html","content-version":"am","intended-application":"text-mining"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1945-7111\/aeb4f1\/pdf","content-type":"application\/pdf","content-version":"am","intended-application":"text-mining"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1945-7111\/aeb4f1\/pdf","content-type":"application\/pdf","content-version":"am","intended-application":"syndication"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1945-7111\/aeb4f1\/pdf","content-type":"application\/pdf","content-version":"am","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T22:52:11Z","timestamp":1792104731000},"score":1,"resource":{"primary":{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1945-7111\/aeb4f1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,15]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1149\/1945-7111\/aeb4f1","relation":{},"ISSN":["0013-4651","1945-7111"],"issn-type":[{"value":"0013-4651","type":"print"},{"value":"1945-7111","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,15]]}}}