{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T18:11:15Z","timestamp":1775067075054,"version":"3.50.1"},"reference-count":49,"publisher":"Wiley","issue":"43","license":[{"start":{"date-parts":[[2015,10,7]],"date-time":"2015-10-07T00:00:00Z","timestamp":1444176000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Natural Science Foundation of Jiangsu Province of China","award":["BK20140315"],"award-info":[{"award-number":["BK20140315"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["51402202"],"award-info":[{"award-number":["51402202"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Foundation of State Key Laboratory of Coal Conversion","award":["J15-16-903"],"award-info":[{"award-number":["J15-16-903"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Adv Funct Materials"],"published-print":{"date-parts":[[2015,11]]},"abstract":"<jats:p>In the quest to develop next generation lithium ion battery anode materials, satisfactory electrochemical performance and low material\/fabrication cost are the most desirable features. In this article, porous Si nanowires are synthesized by a cost\u2010effective metal\u2010assisted chemical etching method using cheap metallurgical silicon as feedstock. More importantly, a thin oxide layer (\u22483 nm) formed on the surface of porous Si nanowires stabilizes the cycling performance of lithium ion batteries. Such an oxide coating is able to constrain the huge volume expansion of the underlying Si, yet it is thin enough to ensure good permeability for both lithium ions and electrons. Therefore, the extraordinary storage capacity of Si can be well retained in prolonged electrochemical cycles. Specifically, Si\/SiO<jats:italic><jats:sub>x<\/jats:sub><\/jats:italic> nanowires deliver a reversible capacity of 1503 mAh g<jats:sup>\u22121<\/jats:sup> at the 560th cycle at a current density of 600 mA g<jats:sup>\u22121<\/jats:sup>, demonstrating an average of only 0.04% drop per cycle compared with its initial capacity. Furthermore, the highly porous structure and thin Si wall facilitate the electrolyte penetration and shorten the solid\u2010state lithium transportation path, respectively. As a result, stable and satisfactory reversible capacities of 1297, 976, 761, 548, and 282 mAh g<jats:sup>\u22121<\/jats:sup> are delivered at current densities of 1200, 2400, 3600, 4800, and 7200 mA g<jats:sup>\u22121<\/jats:sup>, respectively.<\/jats:p>","DOI":"10.1002\/adfm.201503206","type":"journal-article","created":{"date-parts":[[2015,10,7]],"date-time":"2015-10-07T12:02:34Z","timestamp":1444219354000},"page":"6701-6709","source":"Crossref","is-referenced-by-count":212,"title":["Porous Si Nanowires from Cheap Metallurgical Silicon Stabilized by a Surface Oxide Layer for Lithium Ion Batteries"],"prefix":"10.1002","volume":"25","author":[{"given":"Yu","family":"Chen","sequence":"first","affiliation":[{"name":"College of Physics Optoelectronics and Energy &amp; Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University  215006 Suzhou P. R. China"}]},{"given":"Lifeng","family":"Liu","sequence":"additional","affiliation":[{"name":"International Iberian Nanotechnology Laboratory (INL)  4715\u2010330 Braga Portugal"}]},{"given":"Jie","family":"Xiong","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China  Chengdu 610054 P. R. China"}]},{"given":"Tingzhou","family":"Yang","sequence":"additional","affiliation":[{"name":"College of Physics Optoelectronics and Energy &amp; Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University  215006 Suzhou P. R. China"}]},{"given":"Yong","family":"Qin","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences  Taiyuan 030001 P. R. China"}]},{"given":"Chenglin","family":"Yan","sequence":"additional","affiliation":[{"name":"College of Physics Optoelectronics and Energy &amp; Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University  215006 Suzhou P. R. 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