Influence of alkaline cation on the electrochemical behavior of stabilized alpha-Ni(OH)2
Influence of alkaline cation on the electrochemical behavior of stabilized alpha-Ni(OH)2
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DOI：
10.1007/s10008-014-2478-z
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发表时间：
2014-05
影响因子：
2.5
通讯作者：
M. Danczuk;Cícero V. Nunes;K. Araki;F. Anaissi
中科院分区：
文献类型：
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作者：
M. Danczuk;Cícero V. Nunes;K. Araki;F. Anaissi
纳米结构氢氧化镍修饰铂盘电极的循环伏安图被解释为不同比例的α和β相材料的贡献的组合。电解质阳离子对阴极波形的影响更显著，其中KOH似乎比NaOH和LiOH更能降低放电速率。出乎意料的是，似乎不需要热处理来获得稳定的α-Ni（OH）2。在100次充放电循环后，纳米结构的α-NiII（OH）2记录了可再现的充放电响应和高达2.45倍的比充电容量（490 mA h g−1），这表明它们足够稳定，可用于电化学器件，如电池和传感器。
Cyclic voltammograms of nanostructured nickel hydroxide modified platinum disk electrodes were interpreted as combinations of the contribution of alpha and beta-phase materials in different proportions. The electrolyte cation influenced more significantly the cathodic wave profile, where KOH seems to decrease the discharge rate more than NaOH and LiOH. Unexpectedly, the heat treatment does not seem to be required to get stabilized alpha-Ni(OH)2. Reproducible charge–discharge responses and up to 2.45 times higher specific charge capacity (490 mA h g−1) were registered for nanostructured α-NiII(OH)2after 100 charge–discharge cycles, suggesting that they are stable enough for application in electrochemical devices such as batteries and sensors.