The increasing energy demand combined with the need for reduced fossil fuels consumption has led to significant investments in more sustainable energy platforms, such as wind or solar power. The intermittence of these energy sources has made the necessity for fast, low-cost and efficient energy storage technologies critical. Dielectric-based capacitors are strong candidates, due to the high power density that they inherently afford, resulting from their fast charge and discharge cycles. The energy density discharged from a dielectric capacitor (UE) is defined as