往铝电解自焙阳极中添加锂盐，可以增大炭阳极的活性，增进其可湿性，从而降低阳极过电压，减少阳极效应，并且提高电流效率，其综合效果是增产并节电。本文着重讨论其作用机理问题，论证了锂盐对炭阳极的催化作用，减小气膜电阻过电压也是一个重要的节能因素 Adding lithium salt to aluminum electrolysis self-roasting anode can increase the activity of carbon anode and enhance its wettability, thus reducing the anode over-voltage, reducing the anode effect and improving the current efficiency. The combined effect is to increase production and save electricity. This article focuses on the mechanism of its problems, demonstrating the catalytic role of lithium salt on the carbon anode, reducing the film resistance over-voltage is also an important energy saving factor