铅炭电极添加剂和电解液添加剂的研究

Study on lead-carbon electrode additives and electrolyte additives

采用恒电流充放电、线性扫描、交流阻抗等方法研究了铅炭电极添加剂和电解液添加剂对铅炭电极性能及析氢电位的影响。结果表明,如果在铅炭电极中加入无机添加剂,同时在电解液中加入有机添加剂,铅炭电极与传统铅酸电池负极就有相近的析氢电位。按负极活性物质利用率46%计,铅酸电池的电量转化效率仅为32.11%,而铅炭电极和电解液均加入添加剂的铅炭电池的电量转换效率可达到100%。X射线衍射和扫描电子显微镜的测试结果表明,炭材料可有效抑制负极的不可逆硫酸盐化。比表面积测试和孔径分布测试结果表明,炭材料的加入提高了铅炭电极的比表面积和活性。

The effects of lead-carbon electrode additives and electrolyte additives on the properties of lead-carbon electrode and hydrogen evolution potential was investigated by galvanostatic chargedischarge,linear sweep voltammetry and AC impedance.The results show that the inorganic additive was added to the lead carbon electrode,and the organic additive was added to the electrolyte,the leadcarbon electrode had a hydrogen evolution potential similar to that of the traditional lead acid battery.According to the negative active material utilization rate of 46%,the lead-acid battery conversion efficiency is only 32.11%,lead-carbon electrode and electrolyte are added additives lead-carbon battery,the conversion efficiency can reach 100%.The results of XRD,SEM,BET and BJH showed that carbon materials can slow down sulfation and the specific surface area and activity were improved of the negative plates.