The Development Of Colloid Lead Battery And Performance Optimization

1. Preparation and improvement of colloidal liquid lead-acid batteryWith a low concentration of nanoscale gas phase silica for gels, metal sulfates as additives, a certain proportion of sulfate acid mixed, successful prepared of colloid lead acid battery liquid electrolyte. With the charge and discharge, transmission electron microscopy, cyclic voltammetry, impedance testing, on the preparation of liquid electrolyte performance, internal morphology and electrochemical properties were tested, and representation. Examines the content of SiO2gel liquid electrolyte performance influence, change sulfate content in colloid liquid electrolyte, optimize the electrolyte performance. The results show that the existence of liquid electrolyte within the three-dimensional network structure, liquidity is better, battery discharge voltage stable, selected SiO2optimum proportion with sulfuric acid content in0.3%-1%, cell cyclic voltammetry shows that the peak power will lead electrode with the increase of SiO2content decreases, with the increase of alkali metal sulphate content increases, La2(SO4)3content0.002%, peak power larger. Impedance experiment shows that with the SiO2content, alkali metal sulfate salt solution to increase the battery resistance increases, the electrochemical charge transfer resistance decreased. La2(SO4)3affect electrode electric double layer capacitors.2. Preparation and improvement of colloidal solid lead-acid batteryWith a high concentrations of nano-gas phase silica for gels, polyacrylamide (PAM) and sodium carboxymethyl cellulose (CMC) for the colloidal stabilizer, mixed with sulfuric acid, dispersed by ultrasonic method to successfully prepared solid-state gel electrolyte lead-acid batteries.With the charge and discharge, transmission electron microscopy, cyclic voltammetry, impedance testing, on the preparation of liquid electrolyte performance, internal morphology and electrochemical properties were tested and representation, investigated SiO2content, PAM content, CMC content of colloid gel and discharge properties, selected for the best ratio of gel batteries at4%-5%. Experimental results show that the solid-state electrolyte has a thixotropy apparently, the battery discharge voltage stable. Lead battery electrode cyclic voltammetry anodic potential peak shifted in the opposite direction, indicating that solid-state gel electrolyte is conducive to the oxidation of Pb, Electrochemical impedance experiments show that the addition of PAM and CMC will reduce the battery’s charge transfer resistance.3. Preparation and improvement of colloidal composite lead-acid batteryOn the basis of successful synthesis of colloid liquid electrolyte and colloid solid electrolyte, assembled test battery. Added in electrolyte compound additives different content, by charging and discharging, charging accept ability, cycle life test, cyclic voltammetry, electrochemical impedance by means of battery performance and electrochemical properties were tested, examine the content of the compound additives on different influence the performance of the battery. Experimental results show that assembly of the battery discharge voltage stable, compound additive content will affect the battery cycle life and charge acceptance, active material utilization in between40%-50%. Compound additives on the cyclic voltammetry shows the peak position of the electrode reaction has little effect, only affects the peak current and peak power of the size. Electrochemical impedance shows composite additives will reduce the battery’s internal resistance.