Dense and ordered Ni nanocones with regular spiral textures had been successfully synthesized via a simple and inexpensive electrodeposition process in the solution containing sodium chloride (NaCl), nickel chloride hexahydrate (NiCl2·6H2O), and boric acid (H3BO3). After analyzing the microstructure, a more optimized possible growth mechanism of Ni nanocones was proposed, in which the growth process was divided into local and global aspects, named multi-dimensional growth mechanism of global order and local disorder. In an area small enough, any subtle state changes would cause disorder of Ni atom arrangement, which made the local microstructure appear disordered, but from a macro perspective, the difference between two adjacent disorders caused by different statuses was too small to be well reflected, only when the difference in state was large enough can the change be observed in the macroscopic appearance, so the global was orderly. Meanwhile, we found that the microstructure of Ni nanocones would be controlled in the electrodeposition solution by adjusting the experiment parameters such as the concentration of NaCl, NiCl2·6H2O, and H3BO3, which indirectly determined the microstructure in a large extent via controlling the generation of intermediate products and the pH.

中文翻译：

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可控的电沉积镍纳米锥的辩证观察：局部无序和整体无序的统一。

在包含氯化钠（NaCl），六水合氯化镍（NiCl2·6H2O）和硼酸（H3BO3）的溶液中，通过简单且廉价的电沉积工艺成功合成了具有规则螺旋织构的致密且有序的Ni纳米锥。通过对微观结构的分析，提出了一种更优化的镍纳米锥可能的生长机理，其中将生长过程分为局部和全局两个方面，称为全局有序和局部无序的多维生长机理。在足够小的区域中，任何细微的状态变化都会导致Ni原子排列无序，从而使局部微结构显得无序，但是从宏观角度来看，由于状态不同而导致的两个相邻无序之间的差异太小而无法很好地反映出来，只有当状态差异足够大时，才能在宏观外观上观察到这种变化，因此整体是有序的。同时，我们发现可以通过调节NaCl，NiCl2·6H2O和H3BO3的浓度等实验参数来控制电沉积溶液中Ni纳米锥的微观结构，这在很大程度上是通过控制H2BO3的生成而间接确定的。中间产物和pH。