文献详情
Fabrication of Three-Dimensional Nanoporous Nickel by Dealloying Mg-Ni-Y Metallic Glasses in Citric Acid Solutions for High-Performance Energy Storage
文献类型期刊
作者Zuo, Lei[1];Li, Ran[2];Jin, Yu[3];Xu, Hongjie[4];Zhang, Tao[5]
机构
通讯作者Zhang, T (reprint author), Beihang Univ, Key Lab Aerosp Mat & Performance, Minist Educ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
来源信息年:2017  卷:164  期:2  页码范围:A348-A354  
期刊信息JOURNAL OF THE ELECTROCHEMICAL SOCIETY影响因子和分区  ISSN:0013-4651
摘要Free-standing nanoporous nickel (np-Ni) ribbons were directly synthesized by dealloying Mg90-xNix Y-10 metallic glass ribbons in citric acid aqueous solutions under free conditions. Due to the amorphous nature of the Mg90-xNixY10 precursors, the as-dealloyed samples exhibit a uniform nanoporous structure with the ligament size of similar to 7 nm. Effects of alloy composition, leaching time, and acid concentration on the resulting nanoporous microstructure were discussed. The lower limit of Ni content in Mg90-xNixY10 precursors was identified to be 20%, below which the nanoporous Ni could not be formed. Besides, a linear relationship was established between the ligament size and the leaching time on a logarithmic scale. The ultrafine structure of the obtained np-Ni was associated with the stabilizing effect of citric acid. The as-dealloyed samples with the naturally formed oxide surface of NiO were directly examined as binder-free electrodes for high-performance supercapacitors. (C) 2017 The Electrochemical Society. All rights reserved.
收录情况SCIE(WOS:000397850800134)  
所属部门材料科学与工程学院
DOI10.1149/2.1131702jes
学科电化学;材料科学:膜
人气指数71
浏览次数71
基金National Natural Science Foundation of China [51131002, 51571005]
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