Philipp Furler, co-founder and CEO of Synhelion, says that electrification is often presented as the main green alternative to fossil fuels, but there are currently some sectors – maritime and aviation – where this has not been possible.
“These sectors are difficult to decarbonize because they require very high energy density,” he explains. Energy density refers to the amount of energy that can be provided in a given volume.
For example, an egg has a higher energy density than a piece of lettuce of the same size. Likewise, kerosene has 50 times the energy density of state-of-the-art lithium-ion technology—which is why, Furler says, “you’re not flying from Europe to the U.S. on a battery.”
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That’s why, he says, there are some areas where liquid fuel “stays here. And the mission is basically to replace fossil fuels with sustainable fuels.”
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When jet fuel is burned, it releases water and carbon dioxide – in large quantities. Shipping and aviation account for about eight percent of global greenhouse gas emissions. Synhelion aims to reverse the combustion process, says Furler.