|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||PbZn 2020: The 9th International Symposium on Lead and Zinc Processing
||Nucleation and Growth of Lead Sulfate Nanoparticles
||Michael Wall, Jesse Smith, Marcus L. Young, Tim Ellis
|On-Site Speaker (Planned)
PbSO4 is a key component in the charging and discharging of lead acid batteries - such as the cycling of automotive batteries. PbSO4 is a poor conductor that forms on the positive and negative electrodes during discharging and dissolves during charging of the battery. Over time, build-up of PbSO4 occurs on the electrodes which reduces the efficiency of the battery. This study aims to determine the nucleation and growth mechanisms of PbSO4 nanoparticles. Time dependence of particle morphology was observed by different reaction conditions. By creating the PbSO4 using premixed solutions, ethanol was used to “freeze” the development of the PbSO4 particles over various periods of time. The structure of the nanoparticles were characterized via transmission electron microscopy, high angle annular dark field scanning transmission electron microscopy, and selected area electron diffraction. This study will provide insight into the mechanism by which PbSO4 forms.