With the use of lithium-ion batteries on the rise, ESRI is working with Texas-based Southwest Research Institute to study the particulates emitted when those batteries fail catastrophically and enter an uncontrollable, self-heating state known as thermal runaway. The goal of the project is to measure the concentration, size, and mass of particulate components at both the single-cell and module levels, adding depth to research literature that lacks data on the particulates released during thermal runaway.