why do aluminium ions move to the canthode

问题描述:

why do aluminium ions move to the canthode
就是为什么Al电子会移动到负极?

Al ions have positive charge, the cathode has negative charge. since same pole attract, opposite pole repel, therefore the positive Al ions move to the cathode
铝的电子是正(+),负极是负(-),同级相斥,异级相吸.