Largely enhanced energy storage capability of a polymer nanocomposite utilizing a core-satellite strategy

Nanoscale
Zhongbin PanJiwei Zhai

Abstract

The development of new generation dielectric materials toward capacitive energy storage has been driven by the rise of high-power applications such as electric vehicles, aircraft, and pulsed power systems. Here we demonstrate remarkable improvements in the energy density and charge-discharge efficiency of poly(vinylidene fluoride) (PVDF) upon the incorporation of core-satellite structures, namely NaNbO3(NN)@polydopamine (PDA)@Ag nanowires. As compared to the NN NWs/PVDF and NN@PDA NWs/PVDF nanocomposites, the NN@PDA@Ag NWs/PVDF nanocomposites exhibit greatly enhanced energy density and significantly suppressed energy loss. As a result, the NN@PDA@Ag NWs/PVDF nanocomposite films with optimized filler content exhibit an excellent discharge energy density of 16.04 J cm-3 at 485 MV m-1, and maintain a high discharge efficiency of 62.8%. Moreover, the corresponding nanocomposite films exhibit a superior power density of 2.1 MW cm-3 and ultra-fast discharge speed of 153 ns. Ultimately, the excellent dielectric and capacitive properties of the polymer nanocomposites could pave the way for widespread applications in modern electronics and power modules.

References

Oct 29, 2008·Nature Materials·Patrice Simon, Yury Gogotsi
Apr 6, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Daniel R DreyerChristopher W Bielawski
Sep 17, 2013·Advanced Materials·Zhi-Min DangRui-Jin Liao

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Citations

Jul 5, 2019·Chemical Society Reviews·Hang LuoChaoying Wan
Oct 15, 2020·Scientific Reports·JingJing XuWei Nie
Nov 21, 2019·ACS Applied Materials & Interfaces·Haibo ZhangZuo-Guang Ye

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