Fabrication of Three-Dimensional Nanoporous Nickel by Dealloying Mg-Ni-Y Metallic Glasses in Citric Acid Solutions for High-Performance Energy Storage
Fabrication of Three-Dimensional Nanoporous Nickel by Dealloying Mg-Ni-Y Metallic Glasses in Citric Acid Solutions for High-Performance Energy Storage
复制标题
通过在柠檬酸溶液中脱合金 Mg-Ni-Y 金属玻璃制备三维纳米多孔镍用于高性能储能
DOI：
10.1149/2.1131702jes
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发表时间：
2017
影响因子：
3.9
通讯作者：
Tao Zhang
中科院分区：
文献类型：
--
作者：
Ran Li;Yu Jin;Hongjie Xu;Tao Zhang
采用Mg 90-xNixY 10金属玻璃带在柠檬酸水溶液中脱合金的方法，在自由条件下直接合成了自支撑纳米多孔镍（np-Ni）带。由于Mg 90-x Ni x Y 10前体的非晶性质，脱合金态样品表现出均匀的纳米多孔结构，韧带尺寸为1.7nm。讨论了合金成分、浸出时间和酸浓度对所得纳米多孔结构的影响。确定Mg 90-x Ni x Y 10前体中Ni含量的下限为20%，低于该下限不能形成纳米多孔Ni。此外，韧带的大小和浸出时间之间建立了对数尺度上的线性关系。得到的纳米镍的超细结构与柠檬酸的稳定作用。具有自然形成的NiO氧化物表面的脱合金样品被直接检查为用于高性能超级电容器的无粘合剂电极。
Free-standing nanoporous nickel (np-Ni) ribbons were directly synthesized by dealloying Mg 90-x Ni x Y 10 metallic glass ribbons in citric acid aqueous solutions under free conditions. Due to the amorphous nature of the Mg 90-x Ni x Y 10 precursors, the as-dealloyed samples exhibit a uniform nanoporous structure with the ligament size of∼ 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 Mg 90-x Ni x Y 10 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.
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影响因子：
3.9
作者：
Bishop, Lee M.;Yeager, Joseph C.;Hamers, Robert J.
通讯作者：
Hamers, Robert J.
影响因子：
4
作者：
J. Thorp;K. Sieradzki;Lei Tang;P. Crozier;A. Misra;M. Nastasi;D. Mitlin;S. T. Picraux
通讯作者：
J. Thorp;K. Sieradzki;Lei Tang;P. Crozier;A. Misra;M. Nastasi;D. Mitlin;S. T. Picraux
影响因子：
6.7
作者：
Bit Na Choi;Woo Won Chun;Aniu Qian;So Jeong Lee;C. Chung
通讯作者：
Bit Na Choi;Woo Won Chun;Aniu Qian;So Jeong Lee;C. Chung
DOI：
10.1039/b919313h
发表时间：
2010-02
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Qian Zhang;Zhonghua Zhang
通讯作者：
Qian Zhang;Zhonghua Zhang
影响因子：
4.9
作者：
Kim, Jae-Hun;Kang, Soon Hyung;Frank, Arthur J.
通讯作者：
Frank, Arthur J.