Battery-like device made from water and clay could be used on Mars

A new supercapacitor design that uses only water, clay and graphene could source material on Mars and be more sustainable and accessible than traditional batteries

​A new supercapacitor design that uses only water, clay and graphene could source material on Mars and be more sustainable and accessible than traditional batteries A new supercapacitor design that uses only water, clay and graphene could source material on Mars and be more sustainable and accessible than traditional batteries