Batteries; Lithium sulphur batteries; Lithium Metal Batteries, Flexible form batteries; 3D Printed Batteries, Batteries incorporating boron nitride nanotubes; Battery components for Lithium Sulphur, Lithium ion, Lithium Metal and Lithium Air batteries being cathodes, cathodes with nanomaterial coatings, battery separators, battery separators with nanomaterial coatings and anodes made of metal or metal alloys; Components for metal and metal composite anodes and cathodes being anodes containing Lithium, Sodium, aluminium or potassium or a combination of those, and cathodes containing sulphur, carbon, or lithium metal oxides or a combination of those for use in batteries and supercapacitors, battery separators, battery separators with nanomaterial coatings and anodes made of metal alloys; components for use in supercapacitors and hybrid supercapacitor batteries, being cathodes, cathodes with nanomaterial coatings, battery separators, battery separators with nanomaterial coatings, anodes made of metal or metal alloys, and anodes with nanomaterial coatings