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size-refinement enhanced flexibility and electrochemical performance of MXene electrodes for flexible waterproof supercapacitors

引用

Journal of Energy Chemistry 2021年第12期30卷 594-603,I0014页

作者： Jinkun Sun Yingjian Liu Jiayi Huang Jiatian Li Mengmeng Chen Xiaoyu Hu Yatao Liu Run Wang Yanan Shen Jingjing Li Xuecheng Chen Dong Qian Baigang An Zunfeng Liu Key Laboratory of Functional Polymer Materials College of Chemistry and College of PharmacyState Key Laboratory of Medicinal Chemical BiologyFrontiers Science Center for New Organic MatterNankai UniversityTianjin 300071China School of Chemical Engineering University of Science and Technology LiaoningAnshan 114051LiaoningChina Department of Mechanical Engineering The University of Texas at DallasRichardsonTX 75080United States Nanomaterials Physicochemistry Department Faculty of Chemical Technology and EngineeringWest Pomeranian University of TechnologySzczecinPiastów Ave.4271-065 SzczecinPoland

Increasing mechanical flexibility without sacrificing electrochemical performance of the electrode material is highly desired in the design of flexible electrochemical energy storage *** metal-related materials science,decreasing the grain size introduces more grain boundaries;this stops dislocations and crack propagation under deformation,and results in increased strength and ***,such a size refinement effect has not been considered in the mechanical properties,particle stacking,wetting,and electrochemical performances of flexible supercapacitor *** this paper,MXene was used as an electrode material to study the size refinement effect of flexible *** refinement improved the strength and toughness of the MXene electrodes,and this resulted in increased *** elemental analysis provided a theoretical understanding of size refinement-increased ***,the size refinement also improved the specific surface area,electric conductance,ion transportation,and water wetting properties of the electrode,and the size refinement provided highly increased energy density and power density of the MXene supercapacitors.A highly flexible,water-proof supercapacitor was fabricated using size-refined *** current study provides a new viewpoint for designing tough and flexible energy storage *** size refinement effect may also be applicable for metal ion batteries and electronic and photo devices composed of MXene and other nanoparticles.

关键词： Grain refinement Flexible supercapacitor size grading MXene

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