P(VDF-TrFE) ferroelectric nanotube array for high energy density capacitor applications

  • Li X
  • Lim Y
  • Yao K
 et al. 
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Abstract

Poly(vinylidene-fluoride-co-trifluoroethylene) (P(VDF-TrFE)) ferroelectric nanotube arrays were fabricated using an anodized alumina membrane (AAM) as a template and silver electrodes were deposited on both the outer and inner sides of the nanotubes by an electroless plating method. The nanotubes have the unique structure of being sealed at one end and linked at the open end{,} thus preventing electrical shorting between the inner and outer electrodes. Compared with a P(VDF-TrFE) film with a similar overall thickness{,} the idealized nanotube array has a theoretical capacitance that is 763 times larger due to the greatly enlarged contact area between the electrodes and the polymer dielectric. A capacitance that is 95 times larger has been demonstrated experimentally{,} thus indicating that such nanotube arrays are promising for realizing high density capacitance and high power dielectric energy storage.

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Authors

  • Xue Li

  • Yee-Fun Lim

  • Kui Yao

  • Francis Eng Hock Tay

  • Kar Heng Seah

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