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使用电化学线性扫描伏安(LSV)、循环伏安(CV)和电化学石英晶体微天平(EQCM)方法研究了硫酸和硫酸钠溶液中铅电极表面的反应过程.伏安曲线和电极表面质量变化结果分析表明,从-1.0 V到-0.4 V正向扫描时,铅在硫酸溶液中生成两种氧化产物,在-0.87 V时生成硫酸铅,在-0.73 V时生成Pb O·Pb SO4,然后Pb O·Pb SO4转化成硫酸铅,而铅在硫酸钠中的氧化产物只有硫酸铅.因此,酸性溶液是Pb O·Pb SO4形成的必要条件,这进一步揭示了铅酸电池的负极放电机理,也为铅酸电池负极反应过程提供了新的研究方法.
The reaction process of the lead electrode surface in sulfuric acid and sodium sulfate solution was investigated by using electrochemical linear sweep voltammetry (LSV), cyclic voltammetry (CV) and electrochemical quartz crystal microbalance (EQCM). The voltammetry and electrode surface quality The results of the change analysis show that when the positive scan from -1.0 V to -0.4 V, lead forms two oxidation products in the sulfuric acid solution, generates lead sulfate at -0.87 V and Pb O · Pb SO4 at -0.73 V, PbO · PbSO4 is then converted to lead sulfate, whereas lead is the only oxidation product of sodium sulfate in the presence of lead sulfate. Therefore, the acidic solution is a necessary condition for the formation of PbO · PbSO4, further revealing the negative electrode discharge mechanism , But also for the lead-acid battery anode reaction process provides a new research method.