Harder than diamond and more electrically conductive than copper while also a million times thinner than paper: graphene is the single greatest discovery of 21st century materials science, and ESA has been working to benefit from its miraculous properties. A project to add ultra-thin graphene to traditional Lithium ion cells offers enhanced capacity and cycle life for future space batteries, which can now be manufactured in a cheaper, greener way – swapping toxic solvent for water and plant-based cellulose.
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Source: ESA Space Engineering & Technology