Batteries play an important role in the transition to a clean energy future. LeydenJar Technologies’ mission is to make lithium-ion batteries last longer. They do this by replacing the graphite inside of batteries with pure silicon. Christian Rood, cofounder and CEO of LeydenJar, sat down with Fast Company to talk about the beginnings and future of LeydenJar, and how they hope to be the key to longer-range electric vehicles, electric flying and more.