从日月潭蓄电池化学反应方程式可见,正极板上市PbO2,负极板上是Pb。这两种物质的导电性能和物理性质都随温度变化极小,因此,可以说,日月潭 蓄电池放电性能的温度效应是由于硫酸所致,因为只有它的活化性能(离解程度和离子迁移速度)与温度相关。
日月潭 蓄电池硫酸电解液的温度高,容量输出就多,电解液的温度低,容量输出就少。照成这种情况的原因,除由于温度降低之外,还由于温度降低时,硫酸铅在硫酸电解液中的溶解度也将降低,这必然使极板周围的铅离子造成饱和,迫使形成的硫酸铅结晶致密,这个致密的结晶阻碍了活性物质与硫酸电解液的充分接触,从而使日月潭 蓄电池容量输出减少。
日月潭 蓄电池在放电时如果硫酸电解液温度较高,这就会使极板表面的PbSO4在硫酸电解液中的过饱和度降低,而有利于形成疏松的硫酸铅结晶,使之在充电时生产粗大坚固的PbO2层,从而可延长极板活性物质的使用寿命。日月潭 蓄电池在充电时如果电解液的温度过高,则会使电解液的扩散加快,极板板栅的腐蚀加剧,从而也就使日月潭 电池的使用寿命缩短。日月潭蓄电池官网
From the chemical reaction equation of Riyuetan battery, it can be seen that PbO2 is on the positive plate and Pb is on the negative plate. The conductivity and physical properties of these two substances have little change with temperature. Therefore, it can be said that the temperature effect of discharge performance of Riyuetan battery is caused by sulfuric acid, because only its activation performance (dissociation degree and ion migration speed) is related to temperature.
The temperature of sulfuric acid electrolyte of Riyuetan battery is high, the capacity output is more, the temperature of electrolyte is low, the capacity output is less. The reason for this is that, in addition to the decrease of temperature, the solubility of lead sulfate in sulfuric acid electrolyte will also decrease when the temperature decreases, which will inevitably saturate the lead ions around the plate and force the formed lead sulfate crystal to be dense, which hinders the full contact between the active substance and sulfuric acid electrolyte, thus making the capacity of Riyuetan battery Reduced output.
If the temperature of sulfuric acid electrolyte is high during the discharge of Riyuetan battery, it will reduce the supersaturation of PbSO4 on the surface of electrode plate in sulfuric acid electrolyte, which is conducive to the formation of loose lead sulfate crystal and the production of thick and solid PbO2 layer during charging, thus prolonging the service life of active substances of electrode plate. If the temperature of electrolyte is too high during the charging of Riyuetan battery, the diffusion of electrolyte will be accelerated, and the corrosion of plate grid will be intensified, so that the service life of Riyuetan battery will be shortened. Sun Moon pond battery official website