Enhanced electrochemical performance of high-density Al-substituted α-nickel hydroxide by a novel anion exchange method using NaCl solution
Enhanced electrochemical performance of high-density Al-substituted α-nickel hydroxide by a novel anion exchange method using NaCl solution
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使用 NaCl 溶液的新型阴离子交换方法增强高密度 Al 取代的 α-氢氧化镍的电化学性能
DOI：
10.1016/j.ijhydene.2014.11.150
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发表时间：
2015-01
影响因子：
7.2
通讯作者：
Haijiang Wang
中科院分区：
文献类型：
--
作者：
Kang Zhao;Zhaorong Chang;Xiao-Zi Yuan;Haijiang Wang
采用聚丙烯酰胺辅助两步干燥法制备了碱性镍基二次电池用高密度Al取代α-氢氧化镍中间层−。为了改善α-Ni(OH)2的电化学性能，采用简单的阴离子交换法对Al取代的−-Ni(OH)2进行了改性。用X射线衍射仪、红外光谱仪、扫描电子显微镜、循环伏安法、交流阻抗谱和充放电测试等手段对合成材料的物理和电化学性能进行了表征。与NO3-−插层α-Ni(OH)2前驱体相比，所得的Cl-−插层α-Ni(OH)2样品具有更高的质子扩散系数、更低的电化学阻抗、更高的比容量和更好的循环稳定性。特别是Cl-−的引入，大大加快了α-Ni(OH)2电极的活化过程。
High-density Al-substituted α-nickel hydroxide with interlayer NO3−for alkaline nickel-based rechargeable batteries has been synthesized using a polyacrylamide (PAM) assisted two-step drying method. In order to improve its electrochemical performance, Al-substituted α-Ni(OH)2with interlayer NO3−is modified by a simple anion exchange method using NaCl solution. The physical and electrochemical properties of the synthesized material are characterized by means of X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and a charge–discharge test. Compared with NO3−intercalated α-Ni(OH)2precursor, the resulting Cl−intercalated α-Ni(OH)2samples possess more excellent electrochemical activities, including higher proton diffuse coefficient, lower electrochemical impedance, higher specific capacity, and better cyclic stability. Especially, it is also found that the introduction of Cl−can greatly accelerate the activation process of α-Ni(OH)2electrodes.
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影响因子：
7.2
作者：
H. Chen;J. M. Wang;T. Pan;H. Xiao;Jiqiang Zhang;C. Cao
通讯作者：
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影响因子：
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影响因子：
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作者：
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通讯作者：
WILLMANN, P
影响因子：
8.6
作者：
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通讯作者：
Hui Li and;Jing Ma;D. Evans;T. Zhou;and Feng Li;X. Duan
影响因子：
3.7
作者：
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