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首页> 外文期刊>Journal of Energy Storage >Zinc morphology change in pulsating current deposition
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Zinc morphology change in pulsating current deposition

机译:脉冲电流沉积中锌的形态变化

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The morphology of Zn deposit can be controlled by pulse deposition. Using defined pulse parameters (20 millisecond-on and 80 millisecond-off), the deposition current density was examined in 50-200 mA cm(-2), in the electrolyte 9 M KOH + 5wt% ZnO, at room temperature (approximately 20 degrees C) on a Zn plate. The obtained Zn morphology is a well-compact boulder microstructure below 100 mA cm(-2). The coulombic efficiency of the deposition is close to 100%. The obtained Zn deposit shows over 90% packing density, with good adhesion to the Zn plate. A change in Zn morphology with deposition time is also observed. The compact boulder microstructure form in the 1 h deposition time becomes a granular spongy Zn after 5 h of deposition.
机译:锌沉积的形态可以通过脉冲沉积来控制。使用定义的脉冲参数(接通20毫秒和断开80毫秒),在室温下(约20℃)在9 M KOH + 5wt%ZnO的电解质中,以50-200 mA cm(-2)检查沉积电流密度℃)。所获得的Zn形态为100 mA cm(-2)以下的紧凑的巨石微结构。沉积的库伦效率接近100%。所获得的锌沉积物显示出超过90%的堆积密度,对Zn板具有良好的附着力。还观察到Zn形态随沉积时间的变化。在1 h的沉积时间内,致密的巨石微结构形式在沉积5 h后变为粒状海绵状Zn。

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