Sirillium
Sirillium is a volatile element found within nebulas.

One use for sirillium was as a warp plasma catalyst. As a gas it could also be used to boost the efficiency of deflector shields.

In 2293, the , under the command of Captain Hikaru Sulu, ignited the sirillium gas within the Azure Nebula in order to escape from a Klingon battle cruiser commanded by Kang. The plan was effective, as it disabled the Klingon vessel.

In 2373, the  encountered a class 17 nebula composed of 7,000 parts per million of sirillium. It was considered a great discovery, due to its versatility, as Voyager was stranded in the Delta Quadrant and the crew were therefore always on the lookout for new energy sources. Captain Kathryn Janeway asked Commander Chakotay to have all department heads aboard the vessel submit proposals for its usage. ()

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Elements