Ammonia's promise as a clean fuel carrier

Ammonia is getting a second look as a carbon-free hydrogen carrier for storing clean energy. The problem has always been that making ammonia requires crushing heat and pressure to break nitrogen's triple bond. The source notes that molecular dinitrogen anions are being explored as a route toward low-temperature ammonia synthesis. This could matter for making ammonia production less energy-intensive.

What clean fuel applications would you most like to see ammonia used for?

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