New nanocomposite processing technique creates more powerful capacitors

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Scanning electron micrographs of barium titanate (BaTiO3) nanocomposites with polycarbonate (left top and bottom) and Viton (right top and bottom) polymer matrices. The images show the dramatic improvement in film uniformity through the use of phosph ...
Scanning electron micrographs of barium titanate (BaTiO3) nanocomposites with polycarbonate (left, top and bottom) and Viton (right, top and bottom) polymer matrices. The images show the dramatic improvement in film uniformity through the use of phosphonic acid coated BaTiO3 nanoparticles (bottom images) as compared to uncoated nanoparticles (top images). Credit: Image courtesy of Joe Perry

A new technique for creating films of barium titanate (BaTiO3) nanoparticles in a polymer matrix could allow fabrication of improved capacitors able to store twice as much energy as existing devices. The improved capacitors could be used in consumer devices such as cellular telephones – and in defense applications requiring both high energy storage and rapid current discharge.


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