Air-stability of sodium-based layered-oxide cathode materials

Sodium ion batteries are considered to be one of the most promising alternative systems to lithium-ion batteries, especially for large scale applications. Sodium-based transition-metal oxides with layered structure have been ...

'Hot' graphene reveals migration of carbon atoms

The migration of carbon atoms on the surface of the nanomaterial graphene was recently measured for the first time. Although the atoms move too swiftly to be directly observed with an electron microscope, their effect on ...

Achieving higher performance with potassium ion battery

Supercapacitors are emerging as alternatives to lithium-ion batteries, offering higher power densities and longer lifetimes (number of cycles where capacity is maintained). A supercapacitor is like a cross between a battery ...

page 1 from 40