One of the greatest challenges in the fight against climate change is energy storage. Fossil fuel essentially stores itself, with its energy locked inside its own chemical bonds. But how do you store more sustainable, but otherwise ephemeral, forms of energy, like the power of the wind and sun?

For Eric Detsi, associate professor in materials science and engineering, the answer is batteries, with the caveat that batteries powerful enough to meet the future’s energy demands—the International Energy Agency projects that worldwide battery capacity will need to sextuple by 2030—do not yet exist. Read more about what is being developed at Penn Today.