Used and Unused Energizer Battery Material (E91,1.5V)—EPR and Magnetic Investigation

Research on battery materials is rapidly rising as they are the preferred electrochemical storage system for portable devices and readily accessible. As an undergraduate student, I was curious to learn what is inside the typical Energizer (E91,1.5V) battery that I use every day. This led to then wanting to compare what changes within the battery when it is used and unused. In this project, the behavior of used (E91,1.5V) and unused battery (E91,1.5V) anode (gelled mixture of zinc powder and electrolyte) and cathode (manganese dioxide and carbon) powder of an Energizer battery (E91,1.5V) was observed and analyzed. Powder property behavior was tested through Electron Paramagnetic Resonance (EPR) (at room temperature) and Vibrating Sample Magnetometer (VSM) measurements for MT and MH. Origin Pro software was used for the data analysis and plotting. A comparison of differences in used and unused as well as anode and cathode material powder signals was seen through graphs and curves for g-value, linewidth, and magnetic moment. We will present the comprehensive data and discuss the results in the presentation.