{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,25]],"date-time":"2026-10-25T05:49:12Z","timestamp":1792907352750,"version":"4.5.0"},"reference-count":40,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2024,12,17]],"date-time":"2024-12-17T00:00:00Z","timestamp":1734393600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China (NSFC)","doi-asserted-by":"publisher","award":["62004178"],"award-info":[{"award-number":["62004178"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China (NSFC)","doi-asserted-by":"publisher","award":["202203021212149"],"award-info":[{"award-number":["202203021212149"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Fundamental Research Program of Shanxi Province","award":["62004178"],"award-info":[{"award-number":["62004178"]}]},{"name":"Fundamental Research Program of Shanxi Province","award":["202203021212149"],"award-info":[{"award-number":["202203021212149"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>In order to broaden the working voltage (1.23 V) of aqueous supercapacitors, a high-performance asymmetric supercapacitor with a working voltage window reaching up to 2.1 V is assembled using a nanorod-shaped molybdenum trioxide (MoO3) negative electrode and an activated carbon (AC) positive electrode, as well as a sodium sulfate\u2013ethylene glycol ((Na2SO4-EG) electrolyte. MoO3 electrode materials are fabricated by adjusting the hydrothermal temperature, hydrothermal time and solution\u2019s pH value. The specific capacity of the optimal MoO3 electrode material can reach as high as 244.35 F g\u22121 at a current density of 0.5 A g\u22121. For the assembled MoO3\/\/AC asymmetric supercapacitor with a voltage window of 2.1 V, its specific capacity, the energy density, and the power density are 13.52 F g\u22121, 8.28 Wh kg\u22121, and 382.15 W kg\u22121 at 0.5 A g\u22121, respectively. Moreover, after 5000 charge\u2013discharge cycles, the capacity retention rate of the device still reaches 109.2%. This is mainly attributed to the small particle size of MoO3 nanorods, which can expose more electrochemically active sites, thus greatly facilitating the transport of electrolyte ions, immersion at the electrolyte\/electrolyte interface and the occurrence of electrochemical reactions.<\/jats:p>","DOI":"10.3390\/nano14242029","type":"journal-article","created":{"date-parts":[[2024,12,17]],"date-time":"2024-12-17T08:17:00Z","timestamp":1734423420000},"page":"2029","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["The Preparation of High-Performance MoO3 Nanorods for 2.1 V Aqueous Asymmetric Supercapacitor"],"prefix":"10.3390","volume":"14","author":[{"given":"Ziyu","family":"Lian","sequence":"first","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiling","family":"Mao","sequence":"additional","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Song","sequence":"additional","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kaihua","family":"Yao","sequence":"additional","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruifeng","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinyu","family":"Yan","sequence":"additional","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengwei","family":"Li","sequence":"additional","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1016\/j.vacuum.2020.109219","article-title":"An ultrafast supercapacitor built by Co3O4 with tertiary hierarchical architecture","volume":"174","author":"Chen","year":"2020","journal-title":"Vacuum"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/j.colsurfa.2020.125110","article-title":"Incorporation of electroactive NiCo2S4 and Fe2O3 into graphene aerogel for high-energy asymmetric supercapacitor","volume":"602","author":"Guo","year":"2020","journal-title":"Colloid. 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