{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T21:41:20Z","timestamp":1791668480855,"version":"4.3.4"},"reference-count":32,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,1,24]],"date-time":"2023-01-24T00:00:00Z","timestamp":1674518400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004252","name":"Qatar University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004252","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Chem."],"abstract":"<jats:p>\n                    The purpose of this study is the synthesis of \u03b1-MnO\n                    <jats:sub>2<\/jats:sub>\n                    -based cathode materials for rechargeable aqueous zinc ion batteries by hydrothermal method using KMnO\n                    <jats:sub>4<\/jats:sub>\n                    and MnSO\n                    <jats:sub>4<\/jats:sub>\n                    as starting materials. The aim is to improve the understanding of Zn\n                    <jats:sup>2+<\/jats:sup>\n                    insertion\/de-insertion mechanisms. The as-prepared solid compounds were characterized by spectroscopy and microscopy techniques. X-ray diffraction showed that the hydrothermal reaction forms \u03b1-MnO\n                    <jats:sub>2<\/jats:sub>\n                    and Ce\n                    <jats:sup>4+<\/jats:sup>\n                    -inserted MnO\n                    <jats:sub>2<\/jats:sub>\n                    structures. Raman spectroscopy confirmed the formation of \u03b1-MnO\n                    <jats:sub>2<\/jats:sub>\n                    with hexagonal MnO\n                    <jats:sub>2<\/jats:sub>\n                    and Ce-MnO\n                    <jats:sub>2<\/jats:sub>\n                    structures. Scanning electron microscopy (SEM) confirmed the formation of nanostructured MnO\n                    <jats:sub>2<\/jats:sub>\n                    (nanofibers) and Ce-MnO\n                    <jats:sub>2<\/jats:sub>\n                    (nanorods). The electrochemical performance of MnO\n                    <jats:sub>2<\/jats:sub>\n                    was evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) tests in half-cells. CV results showed the reversible insertion\/de-insertion of Zn\n                    <jats:sup>2+<\/jats:sup>\n                    ions in MnO\n                    <jats:sub>2<\/jats:sub>\n                    and Ce-MnO\n                    <jats:sub>2<\/jats:sub>\n                    . GCD cycling tests of MnO\n                    <jats:sub>2<\/jats:sub>\n                    and Ce-MnO\n                    <jats:sub>2<\/jats:sub>\n                    at 2500\u00a0mA\/g demonstrated an impressive electrochemical performance, excellent cycling stability throughout 500 cycles, and high rate capability. The excellent electrochemical performance and the good cycling stability of MnO\n                    <jats:sub>2<\/jats:sub>\n                    and Ce-MnO\n                    <jats:sub>2<\/jats:sub>\n                    nanostructures by simple method makes them promising cathode materials for aqueous rechargeable zinc-ion batteries.\n                  <\/jats:p>","DOI":"10.3389\/fchem.2023.1101459","type":"journal-article","created":{"date-parts":[[2023,1,24]],"date-time":"2023-01-24T00:43:43Z","timestamp":1674521023000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":23,"title":["Electrochemically stable tunnel-type \u03b1-MnO2-based cathode materials for rechargeable aqueous zinc-ion batteries"],"prefix":"10.3389","volume":"11","author":[{"given":"Yannis","family":"De Luna","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asma","family":"Alsulaiti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammad I.","family":"Ahmad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hassan","family":"Nimir","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nasr","family":"Bensalah","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2023,1,24]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"320","DOI":"10.1016\/j.jpowsour.2015.04.140","article-title":"Enhanced reversible divalent zinc storage in a structurally stable \u03b1-MnO2 nanorod electrode","volume":"288","author":"Alfaruqi","year":"2015","journal-title":"J. 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