Supersonically sprayed self-aligne d rGO nanosheets and ZnO/ZnMn_(2)O_(4)nanowires for high-energy and high-power-density supercapacitors
作者机构：School of Mechanical EngineeringKorea UniversitySeoul 02841Republic of Korea Energy Environment Policy and TechnologyGraduate School of Energy and Environment(KU-KIST Green School)Korea UniversityRepublic of Korea SKKU Advanced Institute of Nanotechnology(SAINT)and Department of Nano EngineeringSungkyunkwan University(SKKU)Suwon 16419Republic of Korea
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2023年第137卷第6期
页 面：193-204页
核心收录：
学科分类：0821[工学-纺织科学与工程] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 082102[工学-纺织材料与纺织品设计]
基 金：This work was financially supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(Nos.NRF-2020R1A5A1018153,NRF-2021R1A2C2010530,and 2020K1A3A1A74114847) This research was also supported by Technology R&D Project through the Korea Health Industry Development Institute(KHIDI),funded by the Ministry of Health&Wel-fare,Republic of Korea(No.HI21C0049010021)
主 题：ZnO/ZnMn_(2)O_(4)nanowires rGO nanosheets Hydrothermal method Supersonic spraying Supercapacitor
摘 要：Core-shell-type bimetallic oxide and carbon composites comprising zinc oxide(ZnO)nanospheres and zinc manganese oxide(ZnMn_(2)O_(4))nanowires were produced by a hydrothermal method,and supersoni-cally sprayed together with reduced graphene oxide(rGO)nanosheets onto Ni foil to fabricate flexible *** supersonic impact facilitated the exfoliation of the rGO nanosheets,thereby increasing the surface area and adhesion of the composite particles to the *** rGO nanosheets were vertically aligned during the supersonic impact and formed localized zones,enabling optimal accommodation of the ZnO/ZnMn_(2)O_(4)*** localization,with the addition of rGO,reduced the agglomeration of ZnO/ZnMn_(2)O_(4)*** molar concentration of MnSO_(4)used in the synthesis of ZnO/ZnMn_(2)O_(4)was varied from 0.05 to 0.15 mol/L to determine the optimal MnSO_(4)concentration that would result in the highest energy storage *** unique nanostructure of ZnO/ZnMn_(2)O_(4)and the self-alignment of rGO sheets facilitated a favorable environment for high energy storage capability with a specific capaci-tance of 276.3 mF·cm^(−2)at a current density of 0.5 mA·cm^(−2)and an energy density of 98.2μWh·cm^(−2)at a power density of 1600μW·cm^(−2).The width of the potential window was increased to 1.2 V,imply-ing a significant increase in the energy storage capability of the *** retention of 88%was achieved after 10,000 charge/discharge cycles for the supercapacitor fabricated using an optimal MnSO_(4)concentration(0.10 mol/L)during the composite synthesis.
维普期刊数据库