Giant energy-storage density and high efficiency achieved in (Bi 0.5 Na 0.5 )TiO 3 –Bi(Ni 0.5 Zr 0.5 )O 3 thick films with polar nanoregions

A novel (Bi 0.5 Na 0.5 )TiO 3 –Bi(Ni 0.5 Zr 0.5 )O 3 thick film with nanopolar structures is an environmentally friendly candidate material for high energy-storage capacitor.