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dc.contributor.authorLi, Jianmin
dc.contributor.authorAn, Lin
dc.contributor.authorLi, Haizeng
dc.contributor.authorSun, Jianqi
dc.contributor.authorShuck, Christopher
dc.contributor.authorWang, Xuehang
dc.contributor.authorShao, Yuanlong
dc.contributor.authorLi, Yaogang
dc.contributor.authorZhang, Qinghong
dc.contributor.authorWang, Hongzhi
dc.date.accessioned2019-07-31T12:21:18Z
dc.date.available2019-07-31T12:21:18Z
dc.date.issued2019-06-22
dc.identifier.citationLi, J., An, L., Li, H., Sun, J., Shuck, C., Wang, X., … Wang, H. (2019). Tunable stable operating potential window for high-voltage aqueous supercapacitors. Nano Energy, 63, 103848. doi:10.1016/j.nanoen.2019.06.044
dc.identifier.doi10.1016/j.nanoen.2019.06.044
dc.identifier.urihttp://hdl.handle.net/10754/656262
dc.description.abstractThe relatively low operating voltage window of aqueous energy storage devices is a key parameter that limits their energy density. Electrode materials with high electrochemical activities and a wide stable working potential range are crucially needed. Herein, we reported a strategy to control the working potential range of the negative electrode by optimizing the component proportion of molybdenum-tungsten-oxide solid-state solutions. The operating potential range of the molybdenum-tungsten-oxide solid-state solutions was tunable between −0.4 and −1.2 V. An asymmetric supercapacitor device was fabricated by using a Mo0.1W0.9O3-x/single-walled carbon nanotube film as the negative electrode and a commercial activated carbon film as the positive electrode. The optimized device showed a stable working voltage of 2.0 V in 1 M Li2SO4 aqueous electrolyte. This study opens up new avenues for developing high voltage window aqueous energy storage devices.
dc.description.sponsorshipWe gratefully acknowledge the financial support by Science and Technology Commission of Shanghai Municipally (16JC1400700), Innovation Program of Shanghai Municipal Education Commission (2017-01-07-00-03-E00055), the Shanghai Natural Science Foundation (16ZR1401500), the Shanghai Sailing Program (16YF1400400), and the Program of Introducing Talents of Discipline to Universities (No.111-2-04). J. L. acknowledges support through the Fundamental Research Funds for the Central Universities (CUSF-DH-D-2017028). We thank Jim Bailey, PhD, from Liwen Bianji, Edanz Editing China (www.liwenbianji.cn/ac), for editing the English text of a draft of this manuscript.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S2211285519305488
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Nano Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Nano Energy, [[Volume], [Issue], (2019-06-22)] DOI: 10.1016/j.nanoen.2019.06.044 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMolybdenum-tungsten-oxide solid-state solution
dc.subjectExtend stable working potential
dc.subjectLi-ions capacitor
dc.titleTunable stable operating potential window for high-voltage aqueous supercapacitors
dc.typeArticle
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalNano Energy
dc.rights.embargodate2021-06-22
dc.eprint.versionPost-print
dc.contributor.institutionState Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
dc.contributor.institutionA.J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
kaust.personShao, Yuanlong
dc.date.published-online2019-06-22
dc.date.published-print2019-09


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