近几年高考对电化学的考查比例有所增大,并且难度也有所增加。从近几年高考题来分析,对两装置原理的考查主要集中在装置判断、电极判断、两极反应类型、离子移动方向、电子、电流方向。其中以新型电池或组合型装置为载体进行能量转化分析,电极反应分析是近几年热门题型,而电化学的考查对学生来讲始终是难点,特别是原电池、电解池两极点击方程 In recent years, college entrance examination on the proportion of electrochemical tests has increased, and the difficulty has also increased. From the college entrance examination in recent years to analyze the question, the test of the two devices mainly focus on device judgment, electrode judgment, bipolar reaction type, ion movement direction, electron, current direction. One of the new battery or combined device as the carrier for energy conversion analysis, the electrode reaction analysis is a hot topic in recent years, and electrochemical tests for students is always difficult, especially the original battery, cell polarization equation